OPERATOR’S MANUAL
Safety, Assembly, Operating, and Maintenance Instructions
Model MC19
Please Read and Save These Instructions
For Safety, Read All Safety and Operation
Instructions Prior to Operating Machine
Beginning S/N: 125718
Effective Date: 11-25-13
P/N 6000-16
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Table of Contents
General Information ________________ 1
Operating Instructions _____________ 26
HIGHLIGHTED INFORMATION _____________ 1
GLOSSARY ____________________________ 1
IDENTIFYING NUMBER LOCATIONS ________ 1
ENGINE SERIAL NUMBER LOCATION_______ 2
SERVICING OF ENGINE AND
CONTROL IDENTIFICATION,
LOCATION, AND FUNCTION _____________ 26
Ignition Switch _______________________ 26
Engine Choke ________________________ 26
Engine Throttle_______________________ 27
Forward Speed Control (FSC) ___________ 27
Steering Levers_______________________ 27
Blade Clutch (PTO)____________________ 27
Parking Brake ________________________ 27
Front Body Latch Release ______________ 28
Transmission Lockout Levers___________ 28
Hourmeter___________________________ 29
Oil Pressure Warning Horn _____________ 29
Circuit Breaker (7 Amp) ________________ 29
Light Switch (For Optional Lights) _______ 29
STARTING THE ENGINE _________________ 31
ADJUSTING GROUND
SPEED AND STEERING__________________ 31
ENGAGING THE BLADE DRIVE ___________ 33
STOPPING THE MACHINE _______________ 34
ADJUSTING CUTTING HEIGHT____________ 35
TRANSMISSION LOCKOUT ______________ 35
RECOMMENDATIONS FOR MOWING ______ 36
RECOMMENDATIONS FOR TILT-UP DECK
OPERATION/TRANSPORT _______________ 38
GRASS HANDLING SYSTEM (GHS) ________ 39
General Information ___________________ 40
Clogging Checklist____________________ 41
Using the Tilt-Up Deck _________________ 42
Using the GHS Catcher ________________ 42
Powerfil ® __________________________ 42
“Full” Signal Horn ____________________ 42
Cleaning the GHS Exhaust Screen _______ 42
Dumping the Catcher __________________ 43
Tailgate Dumping ____________________ 43
Using the Dump Bag__________________ 43
DRIVETRAIN COMPONENTS ______________ 2
Specifications________________________ 3
ENGINE________________________________ 3
ELECTRICAL SYSTEM ___________________ 3
TRANSMISSION_________________________ 3
BLADE DRIVE __________________________ 4
TIRE SIZE ______________________________ 4
TIRE PRESSURE ________________________ 4
DRIVE BELTS___________________________ 4
SEAT __________________________________ 4
FRAME/BODY CONSTRUCTION ___________ 4
GHS SYSTEM___________________________ 5
MOWER DECK __________________________ 5
DIMENSIONS (Tractor and Mower) _________ 5
Component Identification ___________ 6
Safety Instructions __________________ 9
BEFORE OPERATING ____________________ 9
OPERATING ___________________________ 11
MAINTENANCE ________________________ 13
SAFETY, CONTROL, AND
INSTRUCTION DECALS _________________ 14
Assembly Instructions______________ 18
SETUP INSTRUCTIONS__________________ 18
Tire Installation (Tractor) _______________ 18
Battery Service _______________________ 18
Wet Battery Service __________________ 18
Dry Battery Service___________________ 18
Battery Charging_____________________ 19
Battery Installation ___________________ 19
Mower Deck Assembly_________________ 19
Deck Caster Wheels Installation _________ 19
Deck Discharge Chute Installation _______ 20
Deck Discharge Deflector
Shield Installation ____________________ 20
PTO Shaft Guard Installation ___________ 20
Tilt-Up Roller Wheel Installation _________ 20
Mower Deck Installation on Tractor_______ 21
Deck Installation _____________________ 21
Deck Leveling _______________________ 23
PREOPERATING CHECKLIST_____________ 24
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Table of Contents
CHECKING/SERVICING__________________ 59
Security of Air Filtration Components ____ 59
Battery______________________________ 59
Electrolyte Level _____________________ 59
Cleaning the Terminals ________________ 60
Charging the Battery__________________ 60
Tire Pressure_________________________ 60
Wheel Bolt Torque ____________________ 60
Sharpen Mower Blades ________________ 60
Drive Belts___________________________ 61
Mower Deck Gearbox Oil Seals __________ 62
Spark Plugs__________________________ 62
Fuel Lines and Clamps_________________ 62
Engine Starter________________________ 62
Blade Brake Action____________________ 62
Safety Switch System__________________ 62
Forward Speed Control Friction Lock_____ 63
REPLACING/REPAIRING_________________ 63
Drive Belts___________________________ 63
Engine PTO Drive Belt ________________ 65
Jackshaft Drive Belt __________________ 66
GHS Blower Drive Belt ________________ 67
Hydrostatic Ground Drive Belt___________ 68
Fuel Filter ___________________________ 69
Blade Overload Shear Bolts_____________ 69
PTO Shear Pin (If Equipped) ____________ 70
Mower Blades ________________________ 70
ADJUSTMENTS ________________________ 71
Steering Handles _____________________ 71
Tilt-Up Deck Adjustable Stop____________ 71
GHS Signal Horn Adjustment
Maintenance Instructions __________ 45
MAINTENANCE SCHEDULE CHART _______ 45
IMPORTANT TIPS FOR CARE
OF THE KOHLER ENGINE________________ 46
Fuel System _________________________ 46
Starting/Stopping_____________________ 46
Cooling System ______________________ 46
Air Cleaner System____________________ 46
Oil__________________________________ 46
LUBRICATION _________________________ 47
Engine Oil ___________________________ 47
Engine Break-In Oil___________________ 47
Checking Engine Crankcase Oil Level ____ 47
Changing Engine Crankcase Oil/Oil Filter__ 47
Mower Deck Gearbox Lubrication________ 48
DS52 or DS62 Mower Deck Lubrication ___ 49
Mower Deck Spindle Lubrication ________ 49
Tractor PTO Gearbox Lubrication ________ 50
Checking Gearbox Oil Level ____________ 50
Changing Gearbox Oil ________________ 50
Gear Axle Lubrication _________________ 50
Hydrostatic Transmission Fluid _________ 50
Checking Hydrostatic
Transmission Fluid Level ______________ 50
Grease Fitting and Oil Point Lubrication __ 51
CLEANING ____________________________ 54
Engine Air Cleaner System _____________ 54
Turbine Precleaner ___________________ 54
Enginaire™ Air Cleaner _______________ 54
Engine Cooling System ________________ 56
Cooling Air Intake System______________ 56
Cylinder Head Cooling Fins ____________ 57
Grass Buildup in Mower Deck Housing ___ 57
GHS Blower__________________________ 58
GHS Exhaust Screen __________________ 59
Hydrostatic Transmission Cooling Fins ___ 59
(When Horn Sounds at Wrong Time)______ 71
Operator’s Notes _______________ 73
Warranty _____________________ 75
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General Information
HIGHLIGHTED INFORMATION
•
•
POWER TAKE-OFF (PTO) transmits engine
power to run the cutter blades and GHS blower.
Walker Manufacturing recommends that any service
requiring special training or tools be performed by
an authorized Walker Mower dealer. There are sev-
eral general practices to be aware of in the area of
safety. Most accidents associated with the opera-
tion or maintenance of a Walker Mower are caused
by disregarding basic safety precautions or specific
warnings. Such accidents, in most cases, can be
prevented by being aware of the dangers present.
POWERFIL® spreads the mowed material
throughout the interior of the grass catcher by
an oscillating delivery spout.
•
RIGHT HAND (RH) refers to the right-hand side
of the tractor when the operator is seated facing
forward in the tractor seat.
•
•
•
SIDE DISCHARGE (SD) discharges mowed
material from the right side of the mower deck.
Information of special importance has been high-
lighted in bold type in this manual. Refer to Safety
Instructions for the meanings of DANGER, WARN-
ING, CAUTION, IMPORTANT, and NOTE.
STEERING LEVERS steer the tractor by con-
trolling the dual hydrostatic transmissions.
GLOSSARY
TRACTOR is the prime mover, including the en-
gine, drive train, operator seat, and controls to
operate the mower.
There are many terms that are either unique to this
equipment or that are used as acronyms. The
following terms and their definitions will help while
using this manual:
•
TRANSMISSION LOCKOUT releases the hy-
drostatic transmissions to permit freewheeling
the tractor.
•
DECK is the mowing attachment mounted on
the front of the tractor which includes the carrier
frame, deck housing, belt or gear drive compo-
nents, and cutter blades.
IDENTIFYING NUMBER LOCATIONS
The tractor serial number plate is affixed to the trac-
tor body just below the left rear corner of the seat.
The mower deck serial number plate is affixed
alongside the angle iron framing on the LH side of
the LH mower blade drive. Model and serial num-
bers are helpful when obtaining replacement parts
and maintenance assistance. For ready reference,
please record these numbers in the space provided.
•
FORWARD SPEED CONTROL (FSC) controls
the maximum forward speed of the tractor;
functioning as a cruise control.
•
•
GRASS HANDLING SYSTEM (GHS®) collects
mowed material and deposits it in the catcher.
GRASS-PAK® SWITCH is mounted on the
grass delivery spout (in the catcher) and acti-
vates the “full” signal horn when the grass
catcher is full.
Tractor Model No. ______________________
Tractor Serial No. ______________________
•
•
GROUND DRIVE refers to the dual hydrostatic
transmissions which drive the main wheels.
Deck Serial No.
______________________
Engine Model No. ______________________
Engine Serial No. ______________________
Date of Purchase ______________________
HYDROSTATIC TRANSMISSION transmits
and controls power from the ground drive belt to
the main drive wheel.
•
LEFT HAND (LH) refers to the left-hand side of
the tractor when the operator is seated facing
forward in the tractor seat.
Fill In By Purchaser
1
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General Information
SERVICING OF ENGINE AND DRIVETRAIN
COMPONENTS
Serial Number
The detailed servicing and repair of the engine,
hydrostatic transmission, and gearboxes are not
covered in this manual. Only routine maintenance
and general service instructions are provided. For
the service of these components during the limited
warranty period, it is important to find a local, au-
thorized servicing agent of the component manu-
facturer. Any unauthorized work done on these
components during the warranty period may void
the warranty. If you have any difficulty finding an
authorized outlet or obtaining warranty service,
please contact our Service Department for assis-
tance:
Tractor Serial Number Location
Walker Manufacturing Company
5925 E. Harmony Road
Fort Collins, CO 80528
1-970-221-5614
Serial Number
walkermowers.com
Service manuals are available for each of these
components from their respective manufacturers as
follows:
Kohler Engines
Kohler Company
Kohler, WI 53044
800-544-2444
Mower Deck Serial Number Location
ENGINE SERIAL NUMBER LOCATION
Hydrostatic
Transmissions
Eaton Fluid Power Group
Hydraulics Business USA
14615 Lone Oak Road
Eden Prairie, MN 55344 USA
952-937-9800
Refer to the engine manual that accompanies this
manual or the photo below for the location of the
engine serial number.
Gearboxes (Deck)
Peerless Gear
1555 South Jackson St.
Salem, IN 47167 USA
866-536-8310
Serial Number
Engine Serial Number Location
2
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Specifications
MODEL
MC19
ENGINE
Manufacturer/Model
Displacement cu. in. (cc)
Max. Power HP (kW)
Governed RPM
Kohler Command Pro CH621, 2 Cyl., Gasoline (Air-Cooled)
38.1 (624)
19.0 (14.2) @ 3600 RPM
3600
Max. Torque lb·ft (N·m)
Idle RPM
32.2 (43.7)
1200
Champion® RC12YC
.030 (0.76)
Spark Plug Type
Spark Plug Gap in. (mm)
Crankcase Capacity qt (L)
2.0 (1.9)
API SG, SH, SJ or higher Grade Oil Only with 10W-30 Viscosity
above 0° F (-18° C), or 5W-20 or 5W-30 Viscosity below 32° F (0° C)
Crankcase Lubricant
Oil Filter
Kohler P/N 28-050-01
2.8 (10.6)
Fuel Tank Capacity gal (L)
Regular Grade Unleaded Gasoline
(87 Octane or Greater, 10% Ethanol Maximum)
Fuel
Cooling System
Air Cleaner
Air Cooled
Remote mounted Enginaire™ VLR
(Walker P/N 5090-1 Primary/5090-3 Safety Filter)
ELECTRICAL SYSTEM
Battery
12 Volt, 35 AH, 300 CCA
Charging System
Charging Output
System Polarity
Ignition
Flywheel Alternator
15 Amp DC (Regulated)
Negative Ground
Electronic Capacitive Discharge
12 Volt Electric Ring-Gear Type, Solenoid Shift
Starter
Ignition Lockout by Seat Switch, Transmission Neutral and Blade
Clutch
Interlock Switches
Circuit Breaker
TRANSMISSION
Manufacturer/Model
Steering
Auto Reset (30A)
Dual Hydrostatic, Eaton Model 7, Each Wheel Independently Driven
Hand Lever Control / Individual Wheel
Precision Friction Lock Lever, Cruise Control, with Neutral-Park
Position
Forward Speed Control
Service Brake
Parking Brake
Dynamic Braking through Hydrostatic Transmission
Mechanical Pin Lock in Transmission Gear
3
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Specifications
MODEL
MC19
TRANSMISSION (continued)
Neutral
Transmission Release by Manual Dump Valve
Gear Drive Axle
Final Drive
Transmission Fluid
Factory Service
Mobil 1 Synthetic Motor Oil (15W-50)
19 (0.56)
Transmission Oil Capacity oz (L)
Transmission Cooling
Ground Travel Speed
Cooling Fan Mounted on Drive Pulley
Forward MPH (km/h)
Reverse MPH (km/h)
0-7 (0-11.3) Infinitely Variable
0-5 (0-8) Infinitely Variable
BLADE DRIVE
PTO Shaft
Quick Disconnect Splined Shaft with Two (2) High-Speed U-Joints
Manual Belt Tightener Clutch and Band Brake
[Stops Blades within Five (5) Seconds of Disengagement]
Blade Drive Clutch and Brake
TIRE SIZE
Deck Caster
Drive
8 x 3.00-4 (Pneumatic 4-Ply)
18 x 8.50-10 (Pneumatic 4-Ply, Low-Profile)
13 x 6.50-6 (Pneumatic 4-Ply)
Rear Caster
TIRE PRESSURE PSI (KPA)
Deck Caster Wheel
20 (137)
15 (103)
20 (137)
Drive
Rear
DRIVE BELTS
Engine PTO
Walker P/N 8230
Walker P/N 6250-1
Walker P/N 7248
Walker P/N 7234-2
Jackshaft Drive
Ground Drive, Micro-V
Blower
Contour-Molded, with Nylon Backed Vinyl Cover and Integral
Foam Cushion
SEAT
FRAME/BODY CONSTRUCTION
Frame
All Welded Unitized Steel Chassis
14 Gauge Steel
Body
Deck
11 Gauge Steel
GHS Catcher and Chutes
Molded Cross-Linked Polyethylene (UV Stabilized)
4
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Specifications
MODEL
GHS SYSTEM
Blower
MC19
10.5 in. Diameter, Three-Blade Paddle Wheel
Band Brake [Works in Combination with PTO Clutch, Stops
Blower within Five (5) Seconds of PTO Disengagement]
Blower Brake
Max. Blower RPM
4000
Grass Catcher Capacity
gal / bu / L
65 / 7 / 246
Oscillating Vane Switch Mounted on Grass Delivery Spout Triggers
Horn Signal
Full Signal (Grass-Pak® Switch)
Oscillating Delivery Spout Driven by 12 Volt Electric Gearmotor
Spreads Material throughout Interior of Catcher @ 25 Cycles/Minute
Powerfil ®
MOWER DECK
Recommended Cut Width
Collection
36 to 48 in. (81 to 122 cm)
36 to 62 in. (81 to 157 cm)
36 to 52 in. (81 to 132 cm)
Side Discharge
Mulch
1 to 4 in. (2.5 to 10 cm) or 1.5 to 4.5 in. (4 to 11.5 cm)
(DS52 and DS62 Belt Driven SD Decks Only)
Cutting Height
Independent Torsion-Flex Frame with Caster Wheels and
Counterweight Springs
Deck Suspension
DIMENSIONS (Tractor and Mower)
Length in. (cm)
Tractor Only
64.5 (164)
Tractor Wheel Base
42.25 (107.5)
Tractor with Tilted Deck
(Approximate)
77 (195.5)
Tractor with 42" Collection Deck
(DC42-1)
89.25 (226.5)
Width in. (cm)
Tractor Only (Outside Tire)
37.75 (96)
Tractor with 42" Collection Deck
(DC42-1)
43.25 (110)
Height in. (cm)
Tractor
47.5 (120.5)
Weight lb (kg)
Tractor Only
734 (333)
Tractor with 42" Collection Deck
(DC42-1)
925 (419.5)
NOTE: The manufacturer reserves the right to make changes in specifications shown herein at any time
without notice or obligation. The specifications listed are for a standard configuration tractor, and may
change with the addition of optional equipment.
5
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Component Identification
NOTE: Control Identification
shown in Operating
Instructions section.
Grass Handling System
7.0 Bushel Catcher
Tilt-Up Latch
Spring Clip
Counterweight Spring
and Protective Cover
Transmission Control Rod
Adjustment Nut (LH)
Anti-Scuff
Roller
Deck Support Pins
and Height Adjustment
Hitch Pins
Catcher Lift /
Dump Handle
Fuel Tank and Cap
Transmission Control
Rod Adjustment Nut
(RH)
Footrests
Deck Support Arms
Deck Lift Handle
Tilt-Up
Hook
(Cutting Height Adjustment)
Tilt-Up
Deck Handle
Deck
Caster Wheels
Front View and Right Side View
6
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Component Identification
Removable Grass
Catcher Screen
(Not Visible)
Catcher Door
Catcher Door
Gas Spring
(Not Visible)
Catcher Lift /
Dump Handle
Footrest
Anti-Scuff
Roller
Catcher
Door Handle
Muffler
Oil Drain
Plug
Tailpipe
Oil
Filter
Left Hand
Drive Wheel
Tailwheel Fork
and Wheel
Rear View and Left Side View
7
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Component Identification
Enginaire™
Air Cleaner
Air Filter
Restriction
Gauge
Fuel Pump
Air Cleaner
Cover
Muffler
Throttle and
Choke Linkage
Air Intake
Hose
Muffler Heat
Shield
Fuel Tank Cap
Jackshaft
Oil Fill/
Dipstick
Rubber Bumpers
(Catcher Support)
PTO Gearbox
Dipstick
GHS Blower
RH Transmission
Lockout Lever
RH Hydrostatic
Transmission
Positive (+)
Battery Cable
Neutral
Safety Switch
PTO
Clutch Lever
LH Transmission
Lockout Lever
30 Amp
Circuit Breaker
(Not Visible)
Negative (-)
Battery Cable
LH Hydrostatic
Transmission
Battery
Top View (Engine Compartment)
8
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Safety Instructions - Before Operating
Pay particular attention to any information labeled
DANGER, WARNING, CAUTION, IMPORTANT,
and NOTE in this manual.
Walker Manufacturing cannot predict every poten-
tially dangerous situation. Therefore, items labeled
as such in this manual do not cover all conceivable
situations. Any person using procedures, tools, or
control techniques not recommended by Walker
Manufacturing must take full responsibility for safety.
When you see the SafetyAlert Symbol (
), read,
understand, and follow the instructions. Failure to
comply with safety instructions may result in person-
al injury.
The Walker Rider Lawnmower has been designed
withmanysafetyfeaturestoprotecttheoperatorfrom
personal harm or injury. However, it is necessary for
the operator to use safe operating procedures at all
times. Failure to follow safety instructions con-
tained in this manual may result in personal in-
jury or damage to equipment or property.
The seriousness or degree of importance of each
type of information is defined as follows:
DANGER
If you have any questions concerning setup, opera-
tion, maintenance, or safety, please contact your
authorized Walker Mower dealer or call Walker
Manufacturing Company at (970) 221-5614.
An IMMEDIATE hazard that WILL result in
severe personal injury or DEATH, if warn-
ing is ignored and proper safety precau-
tions are not taken.
BEFORE OPERATING
1. Read and understand the contents of this
Operator’s Manual before starting and oper-
ating the machine. Become thoroughly famil-
iar with all machine controls and how to stop the
machine and disengage the controls quickly.
Replacement Operator’s Manuals are available
by sending the Model and Serial Number to:
WARNING
A POTENTIAL hazard that COULD result in
severe personal injury or DEATH, if warn-
ing is ignored and proper safety precau-
tions are not taken.
Walker Manufacturing Company
5925 East Harmony Road
Fort Collins, CO 80528
CAUTION
2. Never allow children to operate rider mower.
Do not allow adults to operate without proper
instruction.
Possible hazards or unsafe practices that
MAY result in MODERATE personal injury
or property damage, or machine damage, if
warning is ignored and proper safety pre-
cautions are not taken.
3. Clear the area to be mowed of any foreign
objects which may be picked up and thrown by
cutter blades. Pick up all sticks, stones, wire,
and any other debris.
4. Keep everyone, especially children and pets, a
safe distance away from the area being mowed.
Do not mow with bystanders in the area.
IMPORTANT: Identifies mechanical information
demanding special attention, since it deals with the
possibility of damaging a part or parts of the ma-
chine.
5. Do not operate the machine barefoot or wearing
sandals, sneakers, tennis shoes, or similar
lightweight footwear. Wear substantial pro-
tective footwear.
NOTE: Identifies information worthy of special at-
tention.
9
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Safety Instructions - Before Operating
6. Do not wear loose fitting clothing that could get
caught in moving parts. Do not operate this ma-
chine while wearing shorts; always wear ade-
quate protective clothing, including long
pants. Wearing safety glasses, safety shoes,
and a helmet is advisable and required by some
local ordinances and insurance regulations.
11. Never attempt to make any adjustments
while the engine is running, except where
specifically instructed to do so.
12. The electrical system battery contains sulfuric
acid. Avoid any contact with skin, eyes, and
clothing. Keep the battery and acid out of reach
of children.
7. Prolonged exposure to loud noise can cause
impairment or loss of hearing. Operator hear-
ing protection is recommended; particularly
for continuous operation of the GHS Model due
to blower noise level. Wear a suitable hearing
protective device, such as earmuffs or earplugs.
WARNING
The engine exhaust from this product
contains chemicals known to the State of
California to cause cancer, birth defects
or other reproductive harm.
8. Keep all protective shields and safety de-
vices in place. If a protective shield, safety
device, or decal is damaged, unusable, or miss-
ing, repair or replace it before operating the
machine.
9. Be sure interlock switches are functioning
correctly, so the engine cannot be started un-
less the Forward Speed Control lever is in the
NEUTRAL-PARK position, and the PTO clutch
is in the DISENGAGED position. Also, the en-
gine should stop if the operator lifts off the seat
with either the Forward Speed Control (FSC)
out of the NEUTRAL-PARK position or the PTO
clutch in the ENGAGED position.
NOTE: There is a 1/2 second time delay func-
tion on the seat switch to avoid engine power
interruption when driving over bumps.
10. Handle gasoline with care. Gasoline is highly
flammable and its vapors are explosive:
a. Use an approved fuel container.
b. Never add fuel to a running engine or hot
engine(allowhotenginetocoolseveralmin-
utes).
c. Keep matches, cigarettes, cigars, pipes,
open flames, or sparks away from the fuel
tank and fuel container.
d. Always fill the fuel tank outdoors using care.
Filltoaboutoneinchfromthetopofthetank.
Use a funnel or spout to prevent spilling.
e. Replacethemachinefuelcapandcontainer
cap securely and clean up any spilled fuel
before starting the engine.
10
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Safety Instructions - Operating
1. Operate the mower only in daylight or in
good artificial light with good visibility of the area
being mowed.
7. Do not operate machine if the operator pres-
ence safety switch system is not working.
Verify proper operation by having the operator
lift off the seat with the engine running and mov-
ing two controls, one at a time; (1) Move the
FSC lever out of the NEUTRAL-PARK position,
and (2) Engage the PTO Clutch. Moving either
control should stop the engine after a 1/2 sec-
ond delay.
2. Sit on the seat when starting the engine and
operating the machine. Keep feet on the deck
footrests at all times when the tractor is moving
and/or mower blades are operating. Never op-
erate the tractor without a deck or imple-
ment installed.
8. Do not run the engine in a confined area
without adequate ventilation. Exhaust fumes
are hazardous and can be deadly.
3. For a beginning operator, learn to steer (ma-
neuver) the tractor with a slow engine speed
before attempting any mowing operation.
Be aware that, with the front mounted mower
configuration, the back of the tractor swings to
the outside during turns.
9. Do not carry passengers - maximum seating
capacity is one (1) person.
10. Watch for holes, rocks, and roots in the terrain
and for other hidden hazards. When mowing
tall grass, mow higher than desired to expose
any hidden obstacles. Then, clean the area and
mow to the desired height.
DANGER
Do not mow around overhanging tree
branches or bushes at the same height as
the operator’s torso and head where inad-
vertent contact may cause injury.
11. Avoid sudden starts or stops. Before back-
ing the machine up, look to the rear to be sure
no one is behind the machine. Watch carefully
for traffic when crossing or working near road-
ways.
4. Remember, for an emergency stop, the forward
motion of the tractor can always be stopped by
pulling the Forward Speed Control (FSC) into
the NEUTRAL-PARK position.
12. When moving forward, do not suddenly put the
tractor in reverse by rapidly pulling on the steer-
ing levers, especially when going downhill, as
this can lift the tractor tail wheel off the ground
and set up a bucking motion due to operator
overcontrol. If bucking does occur, immediately
stop the bucking action by pulling the Forward
Speed Control (FSC) lever into the NEUTRAL-
PARK position.
5. In case the transmission drive belt breaks dur-
ing operation, and if the machine is on a slope,
the machine will freewheel down the slope. To
maintain control, immediately (1) Release the
steering levers and simultaneously (2) Move
the FSC to the NEUTRAL-PARK position.
When the machine is stopped or moving slowly,
engage the parking brake.
13. Disengage the blade drive when transporting
the machine across drives, sidewalks, etc. Nev-
er raise the mower deck while blades are
rotating.
NOTE: The emergency stop procedure is ex-
actly the same procedure as used to normally
stop and park the machine.
DANGER
6. Disengage the blade clutch and put the FSC in
the NEUTRAL-PARK position before starting
the engine (an ignition interlock switch normally
prevents starting of the machine if these con-
trols are in the OPERATING position).
Do not mow or dump grass within 5 feet
(1.5 meters) of an embankment or retaining
wall with drop off.
11
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Safety Instructions - Operating
14. The maximum recommended slope operat-
ing angle is 15 degrees or 26% grade. When
operating the machine on a slope, reduce speed
and use caution to start, stop, and maneuver.
To prevent tipping or loss of control of the ma-
chine, avoid sharp turns or sudden changes in
direction. Do not operate the machine on a
slope greater than 15 degrees.
20. In case of a clogged or plugged mower deck
or GHS catching system:
a. Disengage the blade clutch (PTO) and turn
the engine off before leaving the seat.
b. LOOK to make sure blade drive shaft and
blower drive pulley movement has stopped
before trying to unclog the system.
15. Never adjust cutting height with the engine
running. Before adjusting cutting height or
servicing, disengage the blade clutch (PTO),
stop the engine, and remove the ignition key.
Wait for all movement to stop before getting off
the seat.
c. Disconnect the spark plug wires.
d. Never place hands under the deck or in the
GHS blower - use a stick or similar tool to
remove clogged material.
21. If the cutting blades strike a solid object or the
machine begins to vibrate abnormally,
immediately disengage the blade clutch
(PTO), stop the engine, and wait for all
moving parts to stop. To prevent accidental
starting, disconnect the spark plug wires.
Thoroughly inspect the mower and repair any
damage before restarting the engine and
operating the mower. Make sure cutter blades
are in good condition and blade nuts are torqued
to 60 lb·ft (81 N·m) for gear driven decks, and
blade bolts torqued to 70 lb·ft (90 N·m) for belt
driven decks.
NOTE: A blade/blower brake should normally
stop drive line rotation within five (5) seconds of
disengaging the PTO clutch.
16. For side discharge mower decks, do not oper-
ate with the grass deflector shield removed.
Keep the deflector in the lowest possible posi-
tion.
17. For tractors equipped with tilt-up deck, observe
the following recommendations:
a. Do not move tractor with deck in tilt-up
position.
22. Do not touch the engine or muffler while the
engine is running or immediately after stop-
ping the engine. These areas may be hot
enough to cause serious burns.
b. Never tilt body forward with deck in tilt-up
position.
18. Do not operate the machine with the grass
catcher in the DUMP position or with the
back door OPEN. Dangerous projectiles may
be thrown out of the discharge chute or the back
of the grass catcher.
23. When leaving the machine unattended, disen-
gage the blade clutch (PTO), stop the en-
gine, and remove the key.
CAUTION
19. Use care when closing the grass catcher
door. Keep fingers and hands away from the
hinge and pinch points when the door is being
closed. Also, keep fingers and hands clear of
the door frame. The door may slam shut with
considerable force.
Use leg muscles and firm footing when lift-
ing the catcher to dump; avoid bending at
the waist and using back muscles in order
to prevent back injury.
12
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Safety Instructions - Maintenance
1. To prevent accidental starting of the engine
when servicing or adjusting the machine, re-
move the key from the ignition switch and dis-
connect the spark plug wires.
11. Use care when charging the battery or per-
forming maintenance on the battery and electri-
cal system:
a. Make sure the battery charger is unplugged
before connecting or disconnecting cables
to the battery.
2. To reduce fire hazards, keep the engine free
of grass, leaves, excessive grease, and dirt.
3. Keep all nuts, bolts, and screws tight to ensure
the machine is in a safe, working condition.
Check the blade mounting nuts frequently, mak-
ing sure they are tight.
b. Charge the battery in a well-ventilated
space, so gases produced while charging
can dissipate. Make sure the battery vents
in the caps are open.
4. Perform only maintenance instructions de-
scribed in this manual. Unauthorized mainte-
nance operations or machine modifications
may result in unsafe operating conditions.
c. Keep sparks, flames, and smoking materi-
als away from the battery at all times. To
avoid sparks, use care when removing bat-
tery cables from posts.
5. If the engine must be running to perform a main-
tenance adjustment, keep hands, feet, and
clothing away from moving parts. Do not wear
jewelry or loose clothing.
d. Disconnect both battery cables before un-
plugging any wiring connectors or making
repairs on the electrical system.
IMPORTANT: Keep all applicable manuals im-
mediately accessible to anyone who may oper-
ate or service this machine.
6. Always use the proper engine service
manual when working on the engine.
Unauthorized maintenance operations or
modifications to the engine may result in unsafe
operating conditions.
7. Altering the equipment or engine in any manner
which adversely affects its operation, perfor-
mance, durability, or use will VOID the war-
ranty and may cause hazardous conditions.
8. Never attempt to disconnect any safety devices
or defeat the purpose of these safety devices.
9. Do not change the engine governor settings or
overspeed the engine. The governor has been
factory-set for maximum-safe engine operating
speed.
10. Use genuine factory replacement parts.
Substitute parts may result in product malfunc-
tion and possible injury to the operator and/or
others.
13
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Safety Instructions
SAFETY, CONTROL, AND INSTRUCTION DECALS
Safety, Control, and Instruction Decals are installed on the machine;
if any are missing, illegible, or damaged, a replacement should be ordered and installed before
putting the machine into operation. The Decal Part Number is listed below and in the Parts Manual.
1.
1.
8600-12
Location: Front Body, LH Side Above Muffler
Part Number: 8600-12
2.
1. Warning – carbon monoxide (CO) poisoning
hazard.
8600-4
•
•
CO emitted by a running engine can be deadly.
Do not operate indoors or in other enclosed
Location: Adjacent to Blower Discharge
Chute through Body
areas.
Part Number: 8600-4
1. Warning - rotating impeller is a cutting/dismem-
berment hazard to fingers and hands.
1.
•
Never reach down into the blower discharge
chute.
Location: Front Body, RH Side Adjacent to
Operator Seat
Part Number: 8600-30
2. Warning - thrown object hazard.
•
Never engage the PTO with grass catcher
raised.
1. Parking brake
Move lever forward to engage Parking Brake;
back to disengage.
60 lb·ft (81 N·m)
Location: Engine Shroud
Part Number: 5855
1.
8600-9
Location: Gearbox Cover
(Gear Drive Decks Only)
Part Number: 8600-9
1.
8600-16
Location: Rear Cross Member of Front Body
Part Number: 8600-16
1. Tighten blade nuts on gear driven decks to
60 lb·ft (81 N·m).
1. Important - Lower front body before lowering
catcher box.
6807-1
Location: Front Body, Adjacent to Oil Pressure
Warning Horn
Part Number: 6807-1
Location: Rear of Grass Catcher Exhaust Screen
Part Number: 5869
14
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Safety Instructions
SAFETY, CONTROL, AND INSTRUCTION DECALS
Safety, Control, and Instruction Decals are installed on the machine;
if any are missing, illegible, or damaged, a replacement should be ordered and installed before
putting the machine into operation. The Decal Part Number is listed below and in the Parts Manual.
1.
2.
Location: Each End of Mower Deck
Location: Front Body, RH Side
Part Number: 8600-28
Part Number: 5082-5
1. Warning – thrown object hazard.
•
Keep bystanders away from the machine
when operating.
•
•
Clear lawn of debris before operating.
Keep any discharge deflector in place and in
1.
the lowest position.
5848-2
2. Warning – rotating mower blades are a cutting/
dismemberment hazard to hands and feet.
Location: Deck Discharge Shield
(SD Decks Only)
Part Number: 5848-2
•
Keep all body parts away from rotating mow-
er blades.
•
Do not step on end of deck.
1. Warning – thrown object hazard.
•
Always keep the discharge shield in the low-
est position when operating.
Do not remove the discharge shield.
1.
•
8600-14
Location: Deck Carrier Frame
Part Number: 8600-14
1.
1. Warning – do not operate the machine with the
deck tilted up.
Location: Deck Gearbox Cover
Part Number: 8600-7
1.
1. Warning - stop engine and remove ignition key
before adjusting deck cutting height.
Location: Deck Carrier Frame
Part Number: 8600-15
1. Warning – lock deck tilt-up hinge before operat-
ing the machine.
Location: Jackshaft Support Adjacent
to Dipstick
Part Number: 7827
Location: Gear Axle
Part Number: 5810-1
15
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Safety Instructions
SAFETY, CONTROL, AND INSTRUCTION DECALS
Safety, Control, and Instruction Decals are installed on the machine;
if any are missing, illegible, or damaged, a replacement should be ordered and installed before
putting the machine into operation. The Decal Part Number is listed below and in the Parts Manual.
1.
1.
1.
2.
2.
2.
3.
8600-23
Location: Right Side, Behind Operator Seat
Part Number: 8600-23
1. Warning – entanglement hazard.
•
Remove ignition key before raising front
body.
2. Body Tilt Latch
•
•
Raise lever to release.
Lift at back of body to raise.
4.
5.
1.
Location: Catcher Door Hinge Bar,
LH and RH Sides
Part Number: 8600-10
1. Caution - Pinch point.
•
Keep all body parts clear when closing grass
Location: RH Fender
Part Number: 8600-33
catcher door.
1. Warning–readOperator’sManualbeforeservic-
ing or performing maintenance.
•
•
Engage parking brake.
Remove ignition key.
2. Forward Speed Control
•
Move lever forward to increase speed; back
to stop.
3. Warning – do not operate the machine without a
deck or other implement attached.
4. PTO Clutch Lever
Location: Bridge Assembly and
LH Gear Axle
Part Number: 5810-3
•
Move lever back to engage PTO clutch; for-
ward to disengage.
5. Warning – do not engage PTO clutch with PTO
shaft disconnected.
16
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Safety Instructions
SAFETY, CONTROL, AND INSTRUCTION DECALS
Safety, Control, and Instruction Decals are installed on the machine;
if any are missing, illegible, or damaged, a replacement should be ordered and installed before
putting the machine into operation. The Decal Part Number is listed below and in the Parts Manual.
1. Warning–readOperator’sManualbeforeservic-
ing or performing maintenance.
Warning – wear eye and ear protection when op-
erating the machine.
2. Forward Speed Control
1.
•
Move lever forward to increase speed; back
to stop.
2.
3.
4.
3. Warning – roll-over hazard.
•
Do not operate on slopes greater than 15
degrees.
4. Warning – thrown object hazard.
•
Keep bystanders away from the machine
when operating.
5. Warning – entanglement hazard.
•
Keep all guards in place while engine is run-
ning.
6. Choke
5.
6.
Location: LH Fender
Part Number: 8600-35
Location: Hydrostat Oil Reservoir
17
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Assembly Instructions
SETUP INSTRUCTIONS
Dry Battery Service
Walker Mowers are shipped partially assembled to
our distribution network, and are typically assem-
bled by the selling dealer. For any additional as-
sembly besides the following, contact your Walker
dealer.
DANGER
Activating a battery can be dangerous.
The battery should be taken to a reliable
service station, battery store, or power
equipment dealer where a trained techni-
cian can activate the battery safely. DO
NOT attempt to activate the battery unless
you are experienced in battery service
work. The following activation and charg-
ing instructions are provided for use by a
trained battery technician.
Tire Installation (Tractor)
• Install the drive tires using the eight (8) lug bolts
that are supplied with the owner’s packet of
materials. Bolts are torqued to 75 to 85 lb·ft
(102 to 115 N·m). Drive tires are 18 x 8.50-10,
4-ply; rear tire is 13 x 6.50-6, 4-ply.
• Check and adjust the inflation of the tires. The
tire inflation recommendations are:
Drive
Rear
=
=
15 PSI (103 kPa)
20 PSI (137 kPa)
DANGER
Battery Service
Battery electrolyte is a poisonous and cor-
rosive sulfuric acid solution.
Raise front mower body up for battery access (refer
to Front Body Latch Release in Operating Instruc-
tions). Check the battery for electrolyte level and
charge. The electrolyte level should be at the bot-
tom of the vent wells [1/4 to 1/2 in. (6 to 13 mm)
above plates]. If the specific gravity is less than
1.225, the battery needs charging. If the battery has
been shipped dry, or is wet but needs service, refer
to the following instructions.
• Avoid spillage and contact with skin,
eyes, and clothing - causes severe burns.
• To prevent accidents, wear safety gog-
gles and rubber gloves when working with
electrolyte.
• Neutralize acid spills with baking soda
and water solution.
IMPORTANT: Make sure battery is securely mount-
ed in the frame. A loose battery may cause damage
to the case resulting in acid leakage and severe dam-
age to the machine. A hazard may be created by
damage to critical working parts and safety systems.
To fill (activate) battery with electrolyte (if battery has
been shipped dry):
Wet Battery Service
1. Remove the battery hold-down bar, disconnect
the battery cables and lift the battery out of the
tray.
If the battery has been shipped wet, but the electro-
lyte level is low or the battery needs to be charged
then:
IMPORTANT: Battery must be removed from
the mower before filling with electrolyte.
1. Fill each battery cell with distilled water to the
bottom of the vent wells.
IMPORTANT: Obtain and use only battery
grade sulfuric acid electrolyte with a 1.265 spe-
cific gravity to activate the battery. DO NOT use
water or any other liquid during initial activation.
2. Charge battery. Refer to Battery Charging in
this section.
2. Remove the filler caps and carefully fill each cell
until the electrolyte is just above the plates.
18
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Assembly Instructions
3. After the battery is filled with electrolyte, replace
the filler caps and charge the battery. Refer to
Battery Charging.
Install the battery in the mower as shown in Battery
Installation photo. Connect the positive (+) first and
then the negative (-) cable to the proper battery ter-
minal [red cable and boot connects to the Posi-
tive (+) terminal]. Slide the rubber boot up and over
the battery post, making sure it covers the post com-
pletely to prevent an electrical short.
Battery Charging
DANGER
WARNING
BATTERIES PRODUCE EXPLOSIVE GASES
• Charge the battery in a well-ventilated
area, so that gases produced while charg-
ing can dissipate.
Make sure the battery cap vents are open.
Improper venting of the battery COULD
cause a battery explosion.
• Keep sparks, flames, and smoking mate-
rials away from the battery at all times.
• Make sure the battery cap vents are open
after the battery is filled with acid (check
manifold vent on each cap).
Battery Clamp
Secured by
Wing Nut(s)
• Make sure the battery charger is un-
plugged before connecting or disconnect-
ing cables to the battery.
(+) Battery Cable
Connection
1. Charge the battery at 15 amps for 10 minutes.
DO NOT exceed 20 amps maximum recom-
mended charging rate. Charge until specific
gravity is at least 1.250. Total charging time
should not exceed one (1) hour.
Battery Installation
Mower Deck Assembly
Deck Caster Wheels Installation
2. After charging the battery, adjust the electrolyte
level to the bottom of the vent wells [1/4 to 1/2 in.
(6 to 13 mm) above the plates].
1. Remove the bolt, nut, axle spacer tube, and
spacer washers from each deck caster wheel
fork.
IMPORTANT: DO NOT overfill the battery.
Electrolyte will overflow through the vented caps
onto parts of the machine and WILL result in se-
vere corrosion.
NOTE: Spacer washers are used only when
the optional semi-pneumatic deck wheels (8.25
x 2.75) are installed.
2. Fit the axle spacer tube through the wheel hub,
position the spacer washer on each side of the
hub (if used), and fit the assembly into the wheel
fork.
3. Install battery.
Battery Installation
IMPORTANT: Make sure battery is securely mount-
ed in the frame. A loose battery may cause damage
to the case resulting in acid leakage and severe
damage to the machine. A hazard may be created
by damage to critical working parts and safety sys-
tems.
3. Insert the 3/8-16 x 4-1/2 in. bolt through the
wheel fork with the bolt head to the outside and
install the 3/8-16 in. Keps nut.
4. Tighten the bolt and nut until the axle spacer
tube bottoms against the inside of the wheel
fork (will not turn) while the wheel and spacer
washers (if used) spin freely without binding.
19
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Assembly Instructions
Deck Discharge Deflector Shield Installation
(Side Discharge Models Only)
Axle Spacer Tube
Attach the side discharge deflector shield using two
(2) 3/8-16 x 1-1/4 in. bolts, 3/8-16 nylon insert lock-
nuts, and 3/8 in. wave spring washers. The wave
washers fit between the two hinging surfaces. Tight-
en the nuts until the shield moves freely but is not
loose.
Spacer Washer
Axle Bolt
WARNING
DO NOT operate the machine without the
grass deflector shield attached and in the
lowest possible position.
Deck Caster Wheel Installation
5. Grease the caster wheel bearings and caster
pivot bearings - one grease fitting for each
wheel and each pivot.
Deck Discharge Chute Installation
(GHS Rear Discharge Models Only)
Attach Shield
Mount the discharge chute hinge on top of the deck
discharge opening using the 1/4-20 x 1/2 in. socket
button head screw and 1/4-20 ESNA nut. Position
the screw with the head inside of the chute and the
nut on the outside. Attach spring for tilt-up action
from chute to bracket on deck.
Carrier Frame
Tube Sockets
Attach
Guard
Attach
Chute
Discharge Shield Installation
on Side Discharge Deck
PTO Shaft Guard Installation
Position the shaft guard as shown and mount with
two (2) 1/4-20 x 1/2 in. bolts.
Tilt-Up Roller Wheel Installation
Nut on Top
Mount the two (2) tilt-up roller wheels on the brack-
ets on the rear skirt of the deck housing using the
P/N 8490 axle bolt, 3/8 in. wave spring washer and
3/8-16 in. Whiz locknut. Tighten the axle bolt until
the wheel rolls freely, but is not loose.
Discharge Chute and PTO Shaft Guard
Installation on Rear Discharge Deck
20
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Assembly Instructions
4. Reaching under the tractor, slide the PTO cou-
pler tube onto the deck drive shaft (align arrow
decals), then install the coupler quick discon-
nect onto the tractor PTO drive shaft.
Attach Spring
NOTE: When installing the DS52 or DS62
Mower deck, make sure to retract the dolly
wheel after mounting the deck on the tractor.
Arrows on Shaft and Tube
(Used to Align When Sliding Together)
Roller
Wheels
Tilt-Up Spring and Roller Wheel
Installation on Rear Discharge Deck
PTO
Connection
Grease Deck
Support Arms
Mower Deck Installation on Tractor
Deck Installation
1. Lightly grease each deck support arm (2) on the
tractor. Refer to Mower Deck Installation
photo for location of deck support arm.
Mower Deck Installation
(PTO Shaft Connection)
2. Engage the deck carrier frame tube sockets on
the tractor support arms (refer to Discharge
Chute and PTO Shaft Guard Installation
photo for socket location), slide the deck onto
the support arms approximately 3 in. (76 mm).
5. Remove Installation Tool from quick disconnect
ring and make sure the ring has “snapped”
securely on the spline shaft.
IMPORTANT: DO NOT operate tractor with
Coupler Installation Tool installed.
3. Retract the spring-loaded quick disconnect ring
on the PTO Coupler and insert the Coupler
Installation Tool (provided in Owner’s Packet)
as shown in the photo below.
IMPORTANT: To prevent damage to the mow-
er, make sure the PTO quick disconnect is se-
curely locked on the tractor, with the locking
balls fully seated in the groove and the ring in the
locked position (refer to the Quick Disconnect
Ring “Locked” Position illustration). After in-
stallation, pull on the PTO coupler to check for
security.
NOTE: The Coupler Installation Tool is provided
for convenience, but is not required for installation.
Coupler
Installation Tool
PTO Coupler
Tube
Retract Spring-Loaded
Quick Disconnect Ring
PTO Coupler Installation Tool
21
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Assembly Instructions
9. With the counterweight springs connected, the
weight on the deck caster wheels should be
15 to 25 Ib (6.8 to 11.3 kg); this adjustment is
preset at the factory. If required, the spring ten-
sion can be adjusted by tightening or loosening
the elastic stop nuts located underneath the
lower spring hook, or contact your local dealer
if additional help is required. Refer to Deck
Counterweight Spring Installation photo.
Coupler Ring in
Released Position
PTO Drive
Shaft
Spring Tension Adjustment
Nut Located Under Lower
Spring Hook (Not Visible)
PTO Coupler
U-Joint
Quick Disconnect Ring “Released” Position
Internal Balls
Locked on Shaft
PTO Drive
Shaft
Counterweight Springs
Clip Onto Body With
Forward Body Tilted Up
Hitch Pins
Lock Deck On
Support Arms
Deck Counterweight Spring Installation
PTO Coupler
U-Joint
Coupler Ring in
Locked Position
Quick Disconnect Ring “Locked” Position
6. Slide the deck the rest of the way on the deck
arms. If the deck is rear discharge (GHS
equipped model), the rear discharge chute will
need to be aligned and connected to the blower
inlet during the last 2 in. (51 mm) of slide action
on the support arms.
NOTE: Raising the mower body may be helpful
in fitting and guiding the deck chute into the
blower.
7. Install the hitch pin through the hole on the end
of each support arm to lock the deck in place
(refer to Deck Counterweight Spring Installa-
tion photo). Two (2) hitch pins are included in
the Owner’s Packet of materials.
8. Raise the mower body (instead of lifting the
front of deck) and clip the counterweight springs
to the receptacle on front of body. Lower the
body to tension the springs. (Refer to Deck
Counterweight Spring Installation photo.)
22
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Assembly Instructions
Deck Leveling
2. Check the side-to-side level. Rotate each
blade sideways and measure the distance
from blade tip to ground on each side. If mea-
surements vary more than 1/8 in. (3 mm), add a
washer shim under the deck support pins on the
low side to level the deck.
1. Position mower on a smooth, level surface. Set
the cutting height to the highest position - 4 in.
(102 mm) - for easy access under the deck to
measure blade height. Refer to ADJUSTING
CUTTING HEIGHT in Operating Instructions.
3. Checkthefront-to-rearlevel. Rotatetheblades
to point forward. Measure the distance from
bladetiptogroundonthefrontandrear. Therear
of the blade should be 1/8 to 1/4 in. (3 to 6 mm)
higher than the front of the blade; shim the rear
(or front) deck support pins equally to achieve at
least 1/16 in. (2 mm) difference.
NOTE: Ablock of wood cut 4 in. (102 mm) high
is a convenient gauge to measure blade height
above ground during the leveling process.
WARNING
NOTE: The mower deck and support frame are
jig welded; within normal tolerances, very little, if
any, shimming should be required to level the
deck. Tire pressure will influence the levelness
of the deck. Check the tire pressure as a possi-
ble cause of the deck not being level.
The machine must be shut off during this
procedure.
4 in. (102 mm)
Wood Block
Should be 1/8 in. (3 mm)
to 1/4 in. (6 mm) higher
at the rear of the blade
Should not vary more
than 1/8 in. (3 mm)
side-to-side
4 in. (102 mm)
Wood Block
NOTE: For DS52 and DS62 decks with
three (3) blades, the front-to-rear level should
be set using the middle blade pointing for-
ward, and either outside blade pointing back.
Deck Leveling
23
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Assembly Instructions
PREOPERATING CHECKLIST
IMPORTANT: DO NOT mix oil with gasoline. Al-
ways use fresh, automotive grade unleaded gaso-
line. DO NOT use premium, white, or high-test gas-
oline. DO NOT use additives, such as carburetor
cleaners, deicers, or moisture removing agents. DO
NOT use gasoline blended with methyl alcohol.
Before operating the mower for the first time, and as
a routine before daily operations, it is important to
make sure the mower is properly prepared and
ready for operation. The following is a list of items
to be checked. (For a mower with frequent opera-
tion, some of these items will not need to be checked
every day, but the operator should be aware of the
condition of each.)
CHECK ENGINE CRANKCASE OIL LEVEL
Check the engine crankcase oil level before use and
after each 8 hours of continuous operation. Refer
to LUBRICATION for Checking Engine Crankcase
Oil Level in Maintenance Instructions.
For proper fuel and lubricants refer to Specifications.
FILL FUEL TANK
CHECK AND SERVICE ENGINE AIR CLEAN-
ER SYSTEM
Fill the fuel tank using clean, fresh automotive grade
unleaded gasoline (87 octane rating minimum).
• Check air filter restriction gauge to make sure
the yellow indicator disk is in the safe operating
(green) range.
DANGER
• Check condition, cleanliness, and security of the
complete air cleaner system (inspect paper ele-
ment every 100 hours). For detailed proce-
dures, refer to CLEANING the Engine Air
Cleaner System in Maintenance Instructions.
Handle gasoline with care. Gasoline is
highly flammable and its vapors are explo-
sive. Use safe refueling procedures:
• DO NOT fill fuel tank with the engine run-
ning.
CHECK ENGINE COOLING SYSTEM
• If the engine is hot, allow to cool before
Check that the engine cooling air intake screen is
free of obstruction by grass clippings or debris and
clean if required. Also, cylinder head cooling fins
should be inspected and cleaned if any build-up of
debris is noted [remove two (2) cylinder head ac-
cess panels to inspect and clean]. Refer to CLEAN-
ING the Cylinder Head Cooling Fins in the Mainte-
nance Instructions for this procedure.
refueling.
• Use an approved fuel container.
• Fuel the mower outdoors.
• DO NOT smoke while refueling.
• Avoid spilling fuel; use a funnel or spout.
CHECK GEAR AXLE OIL LEVEL
• DO NOT overfill the fuel tank; fill up to
about 1 in. (25 mm) below the top of tank.
Refer to LUBRICATION for Gear Axle Lubrication
in Maintenance Instructions.
INSPECT FOUR (4) DRIVE BELTS
IMPORTANT: DO NOT permit dirt or other foreign
matter to enter the fuel tank. Wipe dirt from around
the filler cap before removing. Use a clean fuel stor-
age container and funnel.
Engine PTO Drive, Jackshaft Drive, Hydrostatic
Ground Drive, and GHS Blower Drive.
CHECK HYDROSTATIC TRANSMISSION OIL
LEVEL
Refer to LUBRICATION for Checking Hydrostatic
Transmission Fluid Level in Maintenance Instruc-
tions.
24
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Assembly Instructions
CHECK FUNCTION OF OIL PRESSURE
WARNING HORN
CAUTION
Turn ignition key to the RUN position. The oil pres-
sure horn should signal, indicating normal function.
Do not operate machine with deck tilt-up
pivot joint unlocked.
CHECK FUNCTION OF SAFETY INTERLOCK
SWITCHES
DANGER
Refer to Operating Instructions to check for proper
operation of safety switches, both during engine
starting and with the operator leaving the seat with
tractor moving forward or with the mower blades en-
gaged.
Do not operate the mower with deck in tilt-
up position. Do not move the tractor with
the deck in the tilt-up position.
CHECK AND CLEAN GRASS BUILDUP UN-
DERNEATH MOWER DECK (and inside GHS
blower)
CHECK MOWER BLADE CONDITION,
SHARPNESS, BALANCE, AND SECURITY OF
MOUNTING
Refer to CLEANING the GHS Blower in Mainte-
nance Instructions for blower cleaning information.
Theblademountingnutsongeardrivendecksshould
be torqued to 60 lb·ft (81 N·m), and the blade mount-
ing bolts on belt driven decks torqued to 70 lb·ft
(95 N·m). If blade sharpening is required, refer to
CHECKING/SERVICING for Sharpen Mower
Blades in Maintenance Instructions.
DANGER
Never operate cutter blades with deck in
raised position because it is hazardous.
ADJUST MOWER CUTTING HEIGHT, IF RE-
QUIRED
The tilt-up deck can be secured in the raised posi-
tion by unlocking the deck lock levers on each side
of the carrier frame and inserting the deck hook into
the tilt-up latch on the tractor body. Before operating
the tractor, make sure to re-engage the deck lock
levers after lowering the deck to the normal operat-
ing position.
Position the hitch pins in the four deck support pins.
Refer to the “Cutting Height Adjustment” decal on
the deck gearbox cover.
CHECK TIRE PRESSURE
Deck Caster Wheel = 20 PSI (137 kPa)
Drive
Rear
=
=
15 PSI (103 kPa)
20 PSI (137 kPa)
Tilt-Up Hook and
Latch Connected
CHECK SECURITY OF DRIVE WHEEL BOLTS
The eight (8) lug bolts mounting the drive tires should
each be torqued to 75 to 85 lb·ft (102 to 115 N·m).
Tilt-Up
Latch
PERFORM ANY ADDITIONAL PROCEDURES
called for on the MAINTENANCE SCHEDULE
CHART in Maintenance Instructions.
Tilt-Up
Hook
Deck Lock Lever
Deck Secured in TILT-UP Position
25
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Operating Instructions
CONTROL IDENTIFICATION, LOCATION, AND
FUNCTION
Do not hold the key in the “S” position longer than
10 seconds. If the engine does not start, return the
key to the “O” position for at least 60 seconds before
making a restart attempt. Prolonged cranking can
damage the starter motor and shorten battery life.
Release the key when the engine starts, and it will
return to the RUN position. To stop the engine, rotate
the key counterclockwise to the “O” position.
CAUTION
Before operating the mower, become famil-
iar with the location and function of all op-
erator controls. Knowing the location,
function, and operation of these controls is
important for safe and efficient operation
of the mower.
Engine Choke
The choke control lever (black knob) is located on
the left side of the seat. To start a cold engine, move
the choke control forward to the ON position. After
engine starts, move the choke control toward the
OFF position, keeping enough choke to allow the
engine to run smoothly as it warms up. As soon as
possible, move the choke to the OFF position. A
warm engine requires little or no choke for starting.
Ignition Switch
The ignition switch is located on the left front of the
body and is used to start and stop the engine. The
switch has three positions: “O” is the OFF position,
RUN is the position the key returns to after starting,
and “S” is the START position. When starting the
engine, turn the key clockwise to the “S” position.
IMPORTANT: Make sure the choke is in the OFF
position during normal engine operation; running
with the choke in the ON position CAN damage the
engine.
OFF
ON
Front Body Latch
Release (Not Visible)
Steering
Levers
Forward Speed
Control (FSC)
Choke
Parking
Brake
Throttle
START
Ignition Switch
Key Positions
Blade Clutch
(PTO)
Ignition Switch
(See Inset)
Light Switch
(Optional, Not Shown)
Hourmeter
Oil Pressure
Warning Horn
7 Amp
Circuit Breaker
Operating Controls
26
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Operating Instructions
Engine Throttle
NOTE: Pushing forward on the steering levers will
not cause any change in tractor motion - there will
be no steering lever reaction and there will be no
machine damage.
The throttle control lever (red knob) is located on the
left side of the seat and is used to control engine
speed. Moving the lever forward toward the FAST
position increases engine speed; moving it back-
ward toward the IDLE position decreases engine
speed.
Blade Clutch (PTO)
The blade clutch lever has two positions. Pulling the
lever UP engages the PTO that drives the mower
blades. Pushing the lever DOWN disengages the
PTO and engages the blade brake.
Throttle
Choke
NOTE: The Powerfil® motor and Grass-Pak® full
signal switch are activated by engaging the blade
clutch. Refer to Using the GHS Catcher in this sec-
tion for a complete description of GHS operation.
Parking Brake
The parking brake functions by locking a pin into the
hydrostatic transmission pinion gear teeth. Moving
the lever FORWARD engages the parking brake;
moving the lever BACKWARD releases the brake.
Choke and Throttle Location
Forward Speed Control (FSC)
IMPORTANT: Stop the tractor completely before
engaging the parking brake. The parking brake
uses a positive mechanical lock similar to the PARK
position on an automotive automatic transmission.
If the tractor is moving when the brake is engaged,
it will result in sudden stoppage and possible inter-
nal damage to the axle drive.
Forward Speed Control (FSC) has two functions:
One is to set forward travel speed, and the other is
to establish the NEUTRAL-PARK position. When
the FSC lever is moved into the FORWARD posi-
tion, a friction lock holds any forward speed setting
from 0 to 6.5 mph (0 to 10.5 km/h). The ground
speed is proportional to the lever position; the fur-
ther the lever is advanced forward, the faster the
tractor moves. It is not necessary to hold the FSC
in position since the friction lock maintains the se-
lected lever position. Pulling back on the steering
levers overrides the FSC setting and slows or stops
forward travel. Releasing the steering levers allows
the tractor to resume forward travel at the speed set
by the FSC lever. To stop and park the machine, the
FSC lever is moved backward to the NEUTRAL-
PARK position.
NOTE: If pressure on the parking brake pin (e.g.,
parked on a hill) makes it impossible to release the
parking brake with the parking brake lever, move the
mower gently forward or backward to release the
pin.
Steering Levers
Each drive wheel is controlled by its own indepen-
dent steering lever, for both steering function and
FORWARD/REVERSE motion. The FSC lever sets
the maximum forward speed, and also sets the for-
ward position of the steering levers. The steering
levers operate only with a backward pulling move-
ment of the lever, which causes the drive wheel for
that lever to first slow down, stop, and then reverse
with a full backward lever stroke. The levers are
released to the FORWARD position for “straight-
ahead” ground travel.
Parking Brake Engaged
27
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Operating Instructions
Transmission Lockout Levers
The transmission lockout levers disengage the hy-
drostatic transmissions. By lifting the lever on top
of the transmission and locking it into place with the
lockout cam, the hydrostatic transmissions are re-
leased to permit freewheeling. By releasing the cam
and lowering the lever, the transmissions are en-
gaged for normal operation. The transmission lever
in the LOCKOUT position is used to enable moving
the machine without the engine running (e.g., for
service). Refer to TRANSMISSION LOCKOUT in
this section for operating instructions.
Parking Brake Disengaged
Front Body Latch Release
Lockout
Levers
The front portion of the tractor body hinges forward
for maintenance access and is latched down in the
OPERATING position. To raise the body, move the
latch release forward.
Transmission
Plunger
Lockout Lever Location
NOTE: The transmission plunger on the side of the
transmission case (activated by the LOCKOUT LE-
VER) must be completely released during operation
of the mower, otherwise operation of the transmis-
sion will be erratic.
Front Body
Latch Release
Front Body Latch Release
28
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Operating Instructions
Hourmeter
The hourmeter, which is located on the right front of
the body, displays operating time accumulated
while the ignition switch is in the ON position.
The hourmeter provides maintenance reminders af-
ter certain hours of operation. The hourmeter screen
will start flashing the reminder one hour prior to the
recommended interval and will continue until one
hour after the recommended interval (two hours).
The hourmeter does not have a manual reset
function.
Procedure
Interval*
Reminder
C
Hourmeter
Oil Pressure Warning Horn
Oil Change
(Break-In)**
4-6 Hours
H
G
OIL
Lubricate
and Check
Levels
24-26 Hours
LUBE
The oil pressure warning horn indicates that engine
oil pressure is below the safe operating range [be-
low 3 to 5 PSI (21 to 34 kPa)]. This horn will come
on when the ignition is turned ON, but should go off
after the engine is started. If the horn fails to come
on when the ignition switch is turned ON, it could
indicate a faulty horn. If the horn comes on during
engine operation, stop the engine immediately and
correct the source of the problem before further en-
gine operation.
C
H
G
Oil Change
49-51 Hours***
OIL
*
These intervals reflect the actual time that the
reminder will flash (one hour prior to and one
hour after the recommended interval).
** This reminder is only used one time.
IMPORTANT: Continued operation of the engine
with oil pressure warning horn sounding MAY cause
severe engine damage (if a low oil pressure condi-
tion exists).
*** In normal operating conditions, oil changes in
100-hour intervals are acceptable. Walker and
the engine manufacturers recommend engine
oil changes every 50 hours in extremely dirty or
dusty conditions or for units with less than 100
hours annual use.
Circuit Breaker (7 Amp)
A 7-amp, manual-reset circuit breaker is located to
the right of the hourmeter. The button pops up if the
circuit breaker trips. This circuit breaker protects the
circuits to the safety switch relays, time delay mod-
ule, and GHS.
NOTE: The blinking hour glass on the display
means that the meter is operating properly.
Light Switch (For Optional Lights)
Operates headlights (when installed).
29
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Operating Instructions
The Forward Speed Control also Establishes the Neutral-Park Position of the Steering Levers
LEFT WHEEL
STEERING LEVER
FORWARD SPEED
CONTROL LEVER (FSC)
RIGHT WHEEL
STEERING LEVER
Forward Position
(No Control Change)
Full Forward
Ground Speed
Position
Neutral-Park
Position
Intermediate
Ground Speed
Position
Reverse Drive
Wheel Motion
Position
Neutral-Park
Position
Engaged
Position
PARKING
BRAKE
1.
2.
Disengaged
Position
Fast
Throttle
Position
Disengaged
Position
Idle
Position
THROTTLE
ON Position
OFF Position
Engaged
Position
BLADE CLUTCH (PTO)
Pull Up to Engage
CHOKE
Operating Controls (Top View from Drivers Point of View)
30
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Operating Instructions
STARTING THE ENGINE
IMPORTANT: If the engine fails to start after
approximately 10 seconds of cranking, the
engine should be checked before further crank-
ing. Turn the key to the OFF position and allow
a 60 second cool-down period between starting
attempts. Failure to follow these guidelines can
damage the starter motor and shorten battery
life. Consult your Walker dealer or authorized
Kohler dealer for additional help.
CAUTION
Before operating the mower, read and un-
derstand all Safety Instructions and Operat-
ing Instructions.
3. After the engine starts, make sure the oil pres-
sure horn goes off. If not, stop the engine im-
mediately and find the cause of the problem.
Make sure the oil pressure horn is off prior to
engaging the mower blades and beginning op-
eration.
WARNING
NEVER run the engine in an enclosed or
poorly ventilated area. Engine exhaust
contains carbon monoxide, an odorless
and deadly gas.
4. Gradually move the choke to the OFF position,
keeping enough choke on to allow the engine to
run smoothly as it warms up. As soon as pos-
sible, move the choke to the OFF position.
1. Before attempting to start the engine, make
sure the operator is in the seat, the Forward
Speed Control is in NEUTRAL-PARK position,
and the blade clutch and parking brake are DIS-
ENGAGED.
IMPORTANT: Make sure the choke is in the
OFF position during normal engine operation;
running with the choke in the ON position CAN
damage the engine.
NOTE: Release parking brake to prevent extra
load on the starter if the transmission neutral is
slightly out of adjustment.
ADJUSTING GROUND SPEED AND STEERING
IMPORTANT: If the DS52 or DS62 Mower deck is
installed on the tractor, make sure the dolly wheel is
retracted BEFORE moving.
CAUTION
A safety interlock switch system PRE-
VENTS CRANKING the engine with either
the Forward Speed Control or the blade
clutch (PTO) out of neutral. If the engine
cranks otherwise, the safety system is not
working and should be repaired or adjusted
before operating the mower. DO NOT dis-
connect safety switches; they are for the
operator’s protection.
CAUTION
Learn to START, STOP, and MANEUVER the
mower in a large, open area.
If the operator has not operated a machine
with LEVER STEERING OR DUAL HYDRO-
STATIC TRANSMISSIONS, steering and
ground operation should be learned and
practiced until the operator is completely
comfortable handling the machine BE-
FORE ATTEMPTING TO MOW.
2. Move the choke lever to the ON position and
move the throttle 1/4 to 1/2 open (toward FAST).
Turn the ignition switch to the START position
to start the engine. Release the key to RUN
position as soon as the engine starts.
DANGER
NOTE: The choke may not be required if the
engine is warm.
Keep feet on footrests at all times when
the machine is moving. Never operate the
tractor without a deck or implement in-
stalled.
31
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Operating Instructions
1. Move the FSC out of NEUTRAL-PARK position
to the desired forward speed. DO NOT hold
forward on steering levers. It is not necessary
to hold the FSC lever in position since a friction
lock maintains the selected lever position (and
forward travel speed).
Beginning Recommendations are:
♦ Learn operation of the mower in an open
area away from buildings, fences, and ob-
structions. Learn operation on flat ground
BEFORE operating on slopes.
♦ Start maneuvering the mower with SLOW
engine speed and SLOW Forward Speed
Control setting until familiar with all operat-
ing characteristics.
WARNING
In case the transmission drive belt breaks
during operation, and if the machine is on
a slope, the machine will freewheel down
the slope. To maintain control, immediately
(1) Release the steering levers and
simultaneously (2) Move the FSC to the
♦ Remember it is not necessary to hold the
steering levers forward (a unique Walker
feature); always PULL on the levers for
steering or for reverse motion of the mower.
♦ Learn to operate the mower with your left
hand on the steering levers and right hand
on Forward Speed Control. The use of two
hands on the steering levers tends to cause
overcontrol.
NEUTRAL-PARK position.
machine is stopped or moving slowly,
engage the parking brake.
When the
NOTE: This is exactly the same procedure
used to normally stop and park the machine.
♦ Learn to operate the steering levers with
smooth action. Jerky movements are hard
on the transmission and lawn. For sharp
turns, do not allow the inside wheel to stop
and twist on the grass. Pull the steering lever
controlling the inside wheel into reverse for
a smooth “rolling” turn (one wheel rolling
forward while the other rolls backward).
CAUTION
An operator presence switch (seat switch)
will cause the engine to stop if the FSC is
out of the NEUTRAL-PARK position and
the operator is not in the seat. The function
of this switch should be checked by the op-
erator raising off the seat with the tractor
moving forward (allow a 1/2 second off the
seat for the time delay function); the engine
should stop. If the safety system is not
working, it should be repaired or replaced
before operating the mower. DO NOT dis-
connect the safety switches; they are for
the operator’s protection.
♦ Practice maneuvering the mower until
you can make it go exactly where you are
aiming.
♦ Remember, for an emergency stop, or in
case of loss of control, machine movement
can always be stopped quickly by pulling the
Forward Speed Control into the NEUTRAL-
PARK position.
NOTE: If the FSC lever will not stay in the
selected position, the friction lock needs to be
adjusted. Contact your Walker dealer.
2. Steer by pulling the lever on the side of desired
direction of turn, e.g., pull the LH lever to turn
left. To minimize the possibility of overcontrol,
use only one hand on both steering levers.
32
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Operating Instructions
5. Stop ground travel by pulling both steering le-
vers backward to the NEUTRAL position (trac-
tor not moving) and then moving the FSC lever
to the NEUTRAL-PARK position.
Pull Steering
Levers With
Left Hand
NOTE: If the tractor creeps forward or back-
ward with the FSClever in the NEUTRAL-PARK
position, the transmission control needs to be
adjusted. Contact your Walker dealer.
ENGAGING THE BLADE DRIVE
1. Set the engine throttle at about 1/3 speed. Do
not attempt to engage the blade clutch at
high engine speeds. This will drastically short-
en drive belt life. Use only moderate engine
speed when engaging the blade clutch.
Forward Speed Control
(FSC)
Keep Feet on Footrest
When Moving
2. Engage the blade clutch by pulling the blade
clutch lever SLOWLY up. For disengagement,
push the blade clutch lever down SLOWLY.
Correct Operator Hand Position
on the Controls
3. Reverse direction of the mower by pulling both
levers backward.
CAUTION
An operator presence switch (seat switch)
will cause the engine to stop if the blade
clutch is engaged and the operator is not in
the seat. The function of this switch should
be checked by the operator raising off the
seat and engaging the blade clutch; the en-
gine should stop. If the switch is not work-
ing, it should be repaired or replaced be-
NOTE: Smooth action on the steering levers
will produce smooth mower operation. Remem-
ber to keep the engine and ground speed slow
until learning the control response.
WARNING
fore operating the mower.
disconnect the safety switches; they are
for the operator’s protection.
DO NOT
When moving forward, DO NOT suddenly
put the tractor in reverse by rapidly pulling
on the steering levers, especially when go-
ing downhill, as this can lift the tractor tail
wheel off the ground and set up a bucking
motion due to operator overcontrol. If
bucking does occur, immediately stop the
bucking action by pulling the Forward
Speed Control (FSC) lever into the NEU-
TRAL-PARK position.
IMPORTANT: DO NOT engage the blade clutch
when transporting the mower across drives, side-
walks, loose materials, etc. DO NOT engage the
blade clutch with the PTO shaft disconnected
(the mower deck removed from tractor).
4. The FSC may be adjusted forward for faster
ground speed and backward for slower ground
speed. When mowing, ground speed should be
adjusted to match the load on the cutter blades,
i.e., as the engine pulls down in heavy cutting,
pull back on the FSC lever to reduce ground
speed. Adjusting ground speed helps maintain
a balance between engine power and blade
speed for high-quality cutting action.
33
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Operating Instructions
STOPPING THE MACHINE
CAUTION
1. Pull the steering levers to the NEUTRAL-PARK
position and then move the FSC lever backward
to the NEUTRAL-PARK position.
If the cutting blades strike a stationary ob-
ject while mowing, stop the mower imme-
diately, disconnect the spark plug wires, lift
the deck, and inspect the deck and blades
thoroughly for damage. Make sure that the
blade timing has not been disturbed (the
blades should be at 90 degrees to each
other). Refer to REPLACING/REPAIRING
the Blade Overload Shear Bolts in Mainte-
nance Instructions if blades are out of time.
Also, make sure the blade retaining nuts
are torqued to 60 lb·ft (81 N·m).
2. Slow the engine to a fast idle; put the throttle in
the 1/2 throttle position.
3. Disengage the blade clutch.
IMPORTANT: DO NOT disengage the blade
clutch with high engine speed (above 1/2 throt-
tle) since the brake action on the blade drive will
cause increased wear of the brake band.
WARNING
A brake stops the cutter blades and blower
from freewheeling within five (5) seconds
after disengaging the clutch. If the brake
system malfunctions and the blades do
not stop within five (5) seconds, the brake
should be adjusted or repaired before op-
erating the mower. Contact your Walker
dealer.
4. Slow the engine to idle, put throttle in IDLE po-
sition; and turn the ignition switch OFF.
Engaged
Position
WARNING
Blade Clutch Engaged
Remove the key from the ignition switch
when leaving the mower unattended. This
will prevent children and inexperienced
operators from starting the engine.
5. Engage the parking brake. Also, engaging the
parking brake is recommended when stopping
or parking the machine in a confined space with
little tolerance for movement.
IMPORTANT: The hydrostatic transmissions
lock to prevent the mower from rolling freely with
the engine stopped. However, if the mower is
parked on a slope, it is necessary to ENGAGE
the parking BRAKE to prevent the mower from
creeping. This is due to a small amount of slip-
pageinthehydrostatictransmissions,especially
when transmission fluid is warm.
Disengaged
Position
Blade Clutch Disengaged
34
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Operating Instructions
TRANSMISSION LOCKOUT
WARNING
IMPORTANT: DO NOT TOW this mower with the
transmission lockout engaged. Towing can produce
excessive internal pressure and damage the trans-
mission.
In case the transmission drive belt breaks
during operation, and if the machine is on
a slope, the machine will freewheel down
the slope. To maintain control, immediately
(1) Release the steering levers and
simultaneously (2) Move the FSC to the
To move the mower with the engine NOT running
(dead battery, maintenance, etc.), the hydrostatic
transmissions are unlocked (released).
NEUTRAL-PARK position.
machine is stopped or moving slowly,
engage the parking brake.
When the
1. Raise the body.
2. Lift the transmission lockout lever on both the
RH and LH transmissions and secure into place
with the locking cam.
NOTE: The emergency stop procedure is ex-
actly the same procedure as used to normally
stop and park the machine.
3. The mower will “freewheel” with the levers in the
LOCKOUT position. The levers must be in the
highest position to completely unlock the trans-
missions.
ADJUSTING CUTTING HEIGHT
WARNING
Lockout Lever
The engine must be stopped before ad-
justing cutting height. Disengage the blade
clutch (PTO), stop the engine, and remove
the ignition key. Wait for all movement to
stop before getting off the seat.
Plunger
Depressed
Cam in
LOCKOUT
Position
Cutting height is adjusted by positioning the four (4)
retainer hitch pins in a series of seven vertical holes
on the deck support pins. Lift handles have been
provided on each end of the deck to assist in raising
the deck while positioning the hitch pins. Cutting
heights range from 1 in. (25 mm) [top holes] to 4 in.
(102 mm) [bottom holes] in 1/2 in. (13 mm) incre-
ments.
Lockout Lever - Freewheel Position
4. After moving the mower, release the locking
cam, placing the lever DOWN in the normal OP-
ERATING position. Make sure the transmis-
sion lockout plunger on the side of the transmis-
sion case (activated by the lockout lever) is
completely released, otherwise the transmis-
sion operation will be erratic.
Lift Handle
Deck Support
Pin
Hitch Pin
Cutting Height Adjustment
35
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Operating Instructions
• Keep the mower deck and discharge chute clean.
Lockout Lever
• Mow with sharp blades. A dull blade tears the
grass (resulting in poor lawn appearance) and uses
extra power (slowing the mowing speed).
• It is preferable to cut grass when it is dry and not
too tall. Mow frequently and do not cut grass too
short. (For best appearance, cut off 1/3 or less of
existing grass height.)
Cam in
UNLOCKED
Position
Plunger
Released
• When mowing, operate the engine at full throttle
for the best cutting action and performance of the
grass handling system (GHS). Mowing with a lower
engine RPM causes the mowing blade to not cut
clean and tear the grass. The engine is designed to
be operated at full speed.
Lockout Lever - Normal Operating Position
RECOMMENDATIONS FOR MOWING
• When mowing in adverse conditions (tall and/or
wet grass), mow the grass twice. Raise the mower
to the highest setting - 4 in. (102 mm) - for the first
pass and then make a second pass cutting to the
desired height.
DANGER
• Use a slow setting on the FSC for trimming op-
Do not mow around overhanging tree
branches or bushes at the same height as
the operator’s torso and head where inad-
vertent contact may cause injury.
erations.
• Make sure the mower is leveled properly for a
smooth cut. Refer to Deck Leveling in Assembly In-
structions.
• Use an alternating stripe mowing pattern for
best appearance and vary the direction of the stripe
each time the grass is mowed to avoid wear patterns
in the grass.
• Avoid damage to the grass by slipping and skid-
ding of the drive tires. Use smooth control move-
ments of the steering levers since the hydrostatic
transmissions are “power boosted controls” and jerk-
ingtheleverscaneasilyslipthetires. Forsharpturns,
do not allow the inside wheel to stop and twist on
grass; pull inside steering lever into reverse for a
smooth “rolling” turn (one wheel rolling forward while
the other rolls backward).
• When using a side discharge mower deck, the
sidedischargedeflectorshieldmustnotberemoved
and must be kept in the lowest possible position to
deflectgrassclippingsandthrownobjectsdownward.
Orient the side discharge away from sidewalks or
streets to minimize cleanup of clippings. When
mowing close to obstacles, orient the side discharge
awayfromobstaclestoreducethechanceofdamage
to property by thrown objects.
Avoid Low Hanging Branches
IMPORTANT: Operate the engine at full throttle
when mowing, to allow the engine to produce full
horsepower and to increase efficiency of the engine
cooling system.
36
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Operating Instructions
Maximum Recommended
Slope - Do Not Operate
on Steep Slopes
Side Discharge Deflector Shield in
Lowest Position
• When operating on a slope, reduce speed and
use caution to start, stop, and maneuver. Avoid
sharp turns or sudden changes in direction. The
maximum recommended slope operating angle
is 15 degrees or 26% grade.
16 in.
15°
52 in.
Maximum Recommended Slope
DANGER
Do not mow or dump grass within 5 feet
(1.5 meters) of an embankment or retaining
wall with drop off.
5 FT
MINIMUM
No Driving Zone
37
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Operating Instructions
RECOMMENDATIONS FOR TILT-UP DECK
OPERATION/TRANSPORT
To avoid potential deck and/or tractor damage while
using the tilt-up deck, the following recommenda-
tions are offered:
• Do not move the tractor with the deck in the tilt-
up position since both the roller wheels (on the back
of the deck) and the GHS discharge chute may be
damaged by moving the tractor. The tilt-up configu-
ration should only be used when the tractor is
parked.
• The tractor body should never be tilted for-
ward with the deck in the tilt-up position. This can
cause the deck to unhook from the tractor and fall
with considerable force, potentially causing deck or
tractor damage and/or bodily injury.
• When transporting a tractor with the deck in the
tilt-up position (on a truck or trailer), the deck should
be secured to the vehicle with a strap or rope (stop
vertical movement). This will prevent the deck from
bouncing on the rear roller wheels (causing break-
age). This will also prevent the deck from unhooking
from the tractor and falling, potentially causing deck
or tractor damage. Damage to other items parked
in front of the deck may also occur.
38
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Operating Instructions
GRASS HANDLING SYSTEM (GHS)
Exhaust Screen
(Removable)
Grass-Pak®
Vane Switch
Catcher
Door Spring
(Not Visible)
Powerfil ®
Delivery Spout
“Full” Signal
Horn
Powerfil ®
Drive Motor
Actuator
Rod
Catcher
Door
PTO Clutch
Shear Pin
PTO and Blade
Gear Drive
Grass Catcher
Shear
Bolt
Dump Handle
Body Chute
Assembly
Blower
Deck
Discharge Chute
Rear Discharge
Mower Deck
GHS Flow and Components
39
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Operating Instructions
General Information
NOTE: When a side discharge or mulching mower
deck is installed on the GHS model, a blower intake
cover should be installed in the blower intake tube.
This cover “unloads” the blower and seals the in-
take to effectively eliminate power loss and blower
noise when the blower is not being used.
The Grass Handling System (GHS) consists of a
rear discharge mower deck connected to a 10.5 in.
(27 cm) blower and a rear mounted grass catcher
with 7.0 bushel (246 liters) capacity. The GHS blow-
er operates any time the mower blade clutch is en-
gaged and moves grass through the rear discharge
deck chute into the grass catcher. Blower airflow is
exhausted out the back of the grass catcher, through
a filtering screen. When the grass catcher is full and
needs to be emptied, a “full” signal horn alerts the
operator. When the “full” signal horn sounds, it is
important to stop mowing to prevent overfilling and
clogging of the blower system.
Blower
Intake Cover
IMPORTANT: Normally, the GHS blower operates
with no maintenance or cleaning required. However,
under certain operating conditions, the inside of the
blower housing may accumulate a deposit of dirt,
causing wear and binding of the blower wheel.
Normally, dirt buildup occurs when mowing a com-
bination of dirty and damp grass, especially in
the springtime. When operating in these conditions,
check the blower wheel frequently for binding
and clean the blower housing as required. Refer to
CLEANING the GHS Blower in Maintenance
Instructions.
Blower Intake Cover
NOTE: An alternative to using the blower intake
cover when a side discharge or mulching deck is
installed on a GHS model is the blower lockout kit
(P/N 7541). The blower lockout kit releases tension
on the blower drive belt and does not require the
blower intake cover.
NOTE: In Autumn, when using the GHS mower to
vacuum leaves, it is recommended to raise the front
of the mower deck 2 to 3 notches [1 to 1-1/2 in.
(25 to 38 mm)] higher than the rear. This will avoid
“bulldozing” leaves, particularly when the leaves
are piled in a thick layer. To make this adjustment,
the hitch pins in the two (2) front deck support pins
are repositioned 2 to 3 notches higher while leaving
the rear pins in their original position.
DANGER
ROTATING BLOWER BLADES
NEVER operate the GHS blower with the
blower discharge chute uncovered (grass
catcher in the dump position) since dan-
gerous projectiles may be thrown. NEVER
put hands into the blower discharge chute
for any reason. Use a stick or similar in-
strument to remove any material if clogging
has occurred.
DANGER
NEVER operate the GHS catcher with the
back door open. Objects may be thrown
out the back of the catcher with sufficient
force to cause serious injury to bystanders
or property damage. NOTE: For non-
catching operation, the “No-Catch” Deflec-
tor is an available accessory item.
CAUTION
NEVER leave grass clippings in the grass
catcher after mowing. Damp clippings
generate heat as they decompose. This
MAY cause spontaneous combustion.
40
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Operating Instructions
Clogging Checklist
• Check the amount of flat section remaining at
blade tip. This is the area that is ground away (re-
moved) when the blades are sharpened. If too much
of the flat section is removed, the “air lift” perfor-
mance or “shovel” effect of the blade deteriorates to
the point that discharge of grass clippings into the
blower chute is marginal. Replace cutter blades if
less than 3/4 in. (19 mm) flat section remains at the
blade tip.
In case of clogging, there will be a distinct change
in the sound of the blower, i.e., the blower sound
will stop. Also, the mower deck will begin to leave a
trail of grass clippings. When this occurs, stop the
engine, disconnect the spark plug wires, and make
sure all movement has stopped before attempt-
ing to unclog.
• Check that the interior of the deck housing and
baffling is reasonably clean and free of grass and
dirt buildup. While some degree of material buildup
can be tolerated, a point is finally reached where the
flow of air and grass clippings is restricted.
DANGER
NEVER place hands under the mower deck
or in the GHS blower discharge chute.
Use a stick or similar tool to remove any
clogged material.
NOTE: One condition that quickly causes a buildup
of material in the deck housing is mowing grass and/
or weeds which are “juicy.” The material collects
under the deck with sticky, green juice. Clover and
weeds are especially a problem. The mower deck
will need to be cleaned frequently when operating in
these conditions.
Normally, any clogging will first develop at the back
of the mower deck in the discharge opening into the
blower chute. Clogging at this point does not indi-
cate a particular problem in this part of the sys-
tem, but is a symptom of something restricting
the flow of material throughout the entire system.
The following list of items should be checked if a
pattern of clogging begins to develop. All of these
items are capable of causing clogging at the back of
the deck.
• Check the deck cutting height setting. When
working in thick, tall grass, lower deck settings
[1 to 2 in. (25 to 51 mm) cutting heights] tend to
restrictairflowfrommovingintoandunderthedeck.
Raising the deck cutting height will significantly
increase airflow and reduce clogging when working
in thick, tall grass.
• Check to see if the RH and LH mower blades are
installed for the correct rotation - install blades so
the cutting edges move toward each other.
• Check the interior of the chute connecting the
mower deck to the blower for smoothness and
freedom from obstruction.
Blades Must Operate at
Right Angles (90 Degrees)
FORWARD
• Check the blower wheel for bent blades and
excessive clearance between the blade tip and
the blower housing. A clearance greater than
1/8 in. (3 mm) will cause a significant loss of
blower performance.
• Check the blower discharge chute into the grass
catcher for smoothness and freedom from ob-
struction.
• Check the elbow inside the grass catcher for a
buildup of material in the radius of the elbow. In
certain conditions (damp/dirty grass) a considerable
“clump” of material can accumulate at this point,
greatly restricting material and airflow.
Mounting Nut
Torque = 60 lb·ft
Rear Discharge
(81 N·m)
Chute
• Check that the openings in the removable air
exhaust screen in the grass catcher are not
plugged. If the screen is clogged, refer to Cleaning
the GHS Exhaust Screen in this section.
Blade Rotation for GHS Mower Deck
(View from Underneath)
41
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Operating Instructions
NOTE: An optional exhaust screen with larger
holes (3/4") is available for use when mowing in wet
grass; the screen provides less airflow restriction
and more clog resistance (use standard screen in
dry conditions to avoid excessive material blowing
out of the catcher).
WARNING
DO NOT test the Grass-Pak® switch with
the engine running. Projectiles may be
thrown out of the grass delivery spout, and
COULD cause serious injury.
Remember, anything that restricts airflow or mate-
rial flow along the entire path from the mower deck
to the grass catcher can cause clogging.
The “full” signal horn is designed to operate (sound)
when the grass catcher is almost full. The timing
of the signal is adjustable by changing the position
of the vane on the Grass-Pak® switch. If the signal
is coming on too soon (catcher not completely full)
or too late (grass clogging in catcher spout and
delivery chute), refer to ADJUSTMENTS for GHS
Using the Tilt-Up Deck
Refer to CLEANING of Grass Buildup in Mower
Deck Housing in Maintenance Instructions.
Using the GHS Catcher
Signal Horn Adjustment in Maintenance Instructions
.
Powerfil ®
NOTE: The horn signal should be adjusted to
sound BEFORE the catcher is completely full to
give the operator time to react and stop mowing. An
indication the horn signal is coming on too late (de-
layed too much) is if grass clippings are falling out of
the grass catcher delivery chute when the catcher is
dumped.
The GHS catcher has an oscillating grass delivery
spout (POWERFIL®) which is designed to spread
grass clippings throughout the interior of the grass
catcher (even when mowing wet, heavy grass). The
oscillating action may be checked by turning the
ignition switch to the ON position and moving the
blade clutch to the ENGAGED position. The spout
should oscillate approximately 25 cycles per
minute.
Cleaning the GHS Exhaust Screen
To remove the grass catcher screen for cleaning,
open the catcher door, push forward and pull down
on the grass catcher screen knobs (on either side of
the screen), and slide the screen out. Use a high
pressure washer or water spray and brush to clean
the screen.
NOTE: If the grass spout fails to oscillate, the clutch
switch should be checked for function (the switch
closure is adjustable).
“Full” Signal Horn
Keeping the catcher exhaust screen clean and open
is essential to good performance of the catching
system. In some mowing conditions, e.g., wet and
dirty, it will be necessary to clean the screen fre-
quently to avoid clogging the mower deck, blower,
and chutes due to airflow restriction.
The GHS catcher has a “full” signal horn to alert
the operator to dump the catcher when it is full (to
prevent overfilling and clogging). The “full” signal
horn is activated by a vane switch (Grass-Pak®
switch) mounted on the grass delivery spout. Oscil-
lating action of the spout triggers the vane switch as
grass begins to fill in around the spout when the
catcher is almost full.
Grass Catcher
Screen
The “full” signal function may be checked by turning
the ignition switch ON, engaging the blade clutch
(engine not running), opening the catcher back door,
and triggering the Grass-Pak® vane by hand as it
oscillates. The horn should sound as the switch is
moved in both directions.
Removal Knobs
(Not Visible)
Grass Catcher Screen Removal for Cleaning
42
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Operating Instructions
Dumping the Catcher
Using the Dump Bag
1. Open the back door by lifting on the door handle.
DANGER
2. Orient the dump bag with one (or two) of the
handle straps on the bag opening facing up.
Do not mow or dump grass within 5 feet
(1.5 meters) of an embankment or retaining
wall with drop off.
Tailgate Door
Handle
For dumping, the catcher either tailgate dumps into
a disposal area or dumps into the optional dump
bag. The dump bag is a reusable nylon fabric bag
designed to conveniently move grass clippings from
the catcher to a remote disposal area or container.
Hook Bag
on Bumper
CAUTION
Use leg muscles and firm footing when lift-
ing the catcher to dump; avoid bending at
the waist and using back muscles in order
to prevent back injury.
Tailgate Dumping
1. Open the back door by lifting on the door handle.
Positioning Dump Bag on Catcher
2. Tilt the catcher back to dump by lifting on the
catcher lift handle on the lower front corner of
the catcher.
3. Lower the catcher smoothly down to the normal
operating position. DO NOT allow the catcher
to drop down - the gas spring, that holds the
catcher in the raised position, is not a shock
absorber for lowering the catcher.
4. Close the door by holding the door handle.
The door will close smoothly with the assis-
tance of the gas springs. If the dampening
springs are not functioning properly, they
should be replaced to prevent the door from
slamming closed and possibly causing a pinch
point.
43
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Operating Instructions
3. Hook the bottom of the bag over the rear bum-
per while lifting on the handle strap(s).
5. Lower the catcher smoothly down to the normal
operating position. DO NOT allow the catcher
to drop down - the gas spring, that holds the
catcher in the raised position, is not a shock
absorber for lowering the catcher.
4. Tilt the catcher back to dump into the bag by
lifting on the catcher lift handle on the lower
front corner of the catcher with the one hand
while continuing to hold up on the bag strap(s)
with the other hand. Refer to photos for posi-
tioning the bag and dumping.
6. Close the door by holding the door handle. The
door will close smoothly with the assistance of
the gas springs. If the dampening springs are
notfunctioningproperly,theyshouldbereplaced
to prevent the door from slamming closed and
possibly causing a pinch point.
Catcher Lift /
Dump Handle
Dumping Catcher into Dump Bag
44
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Maintenance Instructions
CAUTION
Maintenance procedures requiring special training or
tools should be performed by a trained technician.
MAINTENANCE SCHEDULE CHART - RECOMMENDED SERVICE INTERVALS - MODEL MC19
25
100
200
400
Every
Ref.
Service Item
Daily Hours Hours Hours Hours Yearly 2Years Page
Check Engine Crankcase Oil Level
Check/Clean Engine Air Cooling System*
Check Security of Air Filtration Components
Check Air Filter Restriction Gauge
Clean Grass Buildup Under Deck
Clean GHS Exhaust Screen*
x
x
x
x
x
x
x
x
x
47
56
59
54
57
59
58
60
25
51
50
59
50
60
Clean GHS Blower*
Service Mower Blades
Check Function of Oil Pressure Warning Horn
Lubricate Grease Fittings and Oil Points*
Check PTO Gearbox Oil Level**
Check Battery Electrolyte Level
Check Hydrostatic Transmission Fluid ◊
Check Tire Pressure
x
x
x
x
x
Check Drive Belts (Jackshaft, Engine PTO,
GHS Blower, Ground Drive)
x
61
Check Deck Gearbox Oil Seals
Check Safety Switch System
Check Turbine Precleaner*
x
x
62
62
54
55
47
50
59
57
62
60
62
47
x
x
x
x
x
x
x
x
Check Air Filter Element ***
Change Engine Crankcase Oil Δ
Check Oil Level in Gear Axle
Clean Hydrostatic Transmission Cooling Fins
Clean Engine Cooling Fins
Check Blade Brake Action
Check Wheel Bolt Torque (75 to 85 lb·ft)
Check/Regap Spark Plugs
x
x
Change Engine Oil Filter
Replace Air Filter Element,
and Dust Ejection Valve ***
x
55
Check Fuel Lines and Clamps
Replace Fuel Filter
Service Battery
x
x
x
x
x
x
62
69
59
63
62
ΔΔΔ
50
62
Check FSC Friction Lock
Service Solenoid Shift Starter
Check Engine Valve Clearance
Change Gear Axle Oil ΔΔ
x
x
x
Replace Fuel Lines and Clamps
Change Hydrostatic Transmission Fluid ΔΔ
ΔΔΔ
∗
More often in extremely dusty or dirty conditions
∗∗ Change PTO gearbox oil after first 100 hours
of operation (break-in period)
CAUTION
∗∗∗ Air cleaner is remote mounted Enginaire™ unit,
replace filter(s) every 400 hours and dust ejection
valve every two years or when worn or damaged
When performing maintenance with the
mower body raised, a safety prop should
be installed from back of body to chassis
frame(fail-safeprotectionincaseoffailure
of body lift support). Empty grass catcher
before raising body.
Δ
Change engine oil and filter after first 5 hours of
operation of a new engine (break-in period)
ΔΔ Change every 2 years or 1000 hours
ΔΔΔ See your Walker dealer for this service or
refer to the Walker Service Manual
◊
Hydrostatic transmissions are sealed - DO NOT OPEN
RESERVOIR CAPS - refer to Hydrostatic Transmission Fluid
45
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Maintenance Instructions
KOHLER TIPS
IMPORTANT TIPS FOR CARE OF THE KOHLER
ENGINE
• Operate the engine at full speed when mowing.
This allows the engine to produce full horsepower
and move more cooling air through the engine cool-
ing fins.
Fuel System
• Fuel must be clean - free from water, dirt, and or-
Air Cleaner System
ganic material.
• Use only EnginaireTM air cleaner elements.
Aftermarket elements may not seal in the air cleaner
housing, allowing dirt to enter the engine. Also, af-
termarket filters often skimp on the filtration media
and require more frequent replacement (see follow-
ing instructions).
• Change fuel filter on a regular basis and when
contamination is suspected or found in the fuel.
Starting/Stopping
• Start engine with the throttle advanced off idle
(1/4 to 1/2 throttle). This will aid starting, especially
in cold weather.
• Use the air filter restriction gauge to indicate the
need to service the air filter.
• Keep the battery fully charged.
• Do frequently check the Turbine Precleaner (lo-
cated in the end cap of the air cleaner assembly) for
free movement of the internal fan. Shine light into
end cap to verify movement of fan with engine run-
ning.
• Match crankcase oil viscosity to the ambient tem-
perature, allowing the engine to crank faster and
start easier.
• Allow engine to run at idle for a few seconds be-
fore stopping engine to avoid run-on or backfiring.
• DO NOT overservice or frequently “disturb” the
air filter. A dirty air filter actually cleans better than
a new one. Changing and cleaning the air filter too
often can actually reduce filter efficiency and in-
crease the opportunity for traces of dust to enter the
engine. Wait until the element really needs servicing
as indicated by the air filter restriction gauge.
Cooling System
CAUTION
DONOTuseapressurewashertocleanthe
cooling system on an air-cooled engine,
mud may form under the cooling shroud
on the cylinder head and cooling fan.
• Whentheairfilterelementisremovedorreplaced,
make sure all dust is cleaned out of the air cleaner
housing and hose. Use a damp cloth and wipe the
interior of the canister and hose clean (a little dirt left
herewillbesuckedintotheengineandreduceengine
life). When the filter is reinstalled, make sure the
element is held tight and straight in the canister for
proper seating and sealing.
• Keep engine air intake screen and cylinder head
fins free of grass clippings, chaff, and dirt. Inspect
intake screen and cooling fins for cleanliness and no
damage.
• Periodically check the air intake hose for cuts,
• Periodically remove two access panels in the en-
gine shroud to inspect and clean cylinder head cool-
ing fins.
nicks, etc., and the hose clamps for tightness.
Oil
• Use only multi-viscosity oils as specified with the
viscosity matching ambient temperatures for the en-
gine operating conditions. This will aid starting in
cold weather and assure proper lubrication in hot
weather.
• Check performance of the cooling system by
starting the engine, holding a hand adjacent to the
cylinder head, and feeling the cooling airflow.
DANGER
• Use only Kohler oil filters. Aftermarket filters
may not seal properly and/or have the incorrect
pressure relief valve for proper lubrication.
Make sure to keep hands clear of exhaust
pipe, muffler, and moving parts when
checking airflow.
46
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Maintenance Instructions
LUBRICATION
LUBRICATION
4. Remove the dipstick again and check the oil lev-
el on the dipstick. The oil level should be within
the “Operating Range” on the dipstick (between
the “L” mark and the “F” mark).
WARNING
IMPORTANT: DO NOT operate engine without
a sufficient oil supply in the crankcase. DO NOT
operate with the oil level below the “L” mark or
above the “F” mark on the dipstick.
DO NOT attempt to lubricate the machine
with the engine running. Disengage the
PTO clutch, shut off the machine, and re-
move the ignition key.
5. If additional oil is needed, refer to Specifications
for proper crankcase lubricant. Fill up to, but
not above, the “F” mark on the dipstick.
Proper lubrication is an important maintenance pro-
cedure. It reduces wear and makes the machine
quieter and easier to operate.
IMPORTANT: DO NOT overfill the crankcase
(oil above “F” mark) as this CAN result in en-
gine overheating, loss of power, and possible
engine damage.
Engine Oil
Engine Break-In Oil
No special break-in oil is required. The engine is
serviced with 10W-30, Service Class SG oil from the
factory. Change the oil after the initial engine break-
in period of 5 hours. Thereafter, change oil after
every 100 hours of operation.
Checking Engine Crankcase Oil Level
Check the engine crankcase oil level before use and
after each 8 hours of continuous operation.
IMPORTANT: The importance of checking and
maintaining the proper crankcase oil level cannot be
overemphasized. Check the oil level BEFORE
EACH USE.
Full Mark
Low Mark
1. Park the mower on a level surface with the
engine stopped. Also, make sure the engine
is cool and oil has had time to drain into the
sump (allow at least five (5) minutes after
stopping the engine).
IMPORTANT: NEVER check or add oil with the
engine running.
Dipstick Operating Range
2. Before removing the dipstick, clean the area
around the dipstick to keep any dirt or debris out
of the engine.
Changing Engine Crankcase Oil/Oil Filter
Change the engine crankcase oil after every 100
hours of operation and replace the oil filter every
other oil change (every 200 hours of operation).
3. Remove the dipstick, wipe off with a clean rag,
then reinsert the dipstick into the tube and press
all the way down.
47
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Maintenance Instructions
LUBRICATION
1. Park the mower on a level surface with the
engine stopped. The engine oil should be
warm before draining. If not warm from opera-
tion, start the engine and run a few minutes to
warm the oil.
9. Fill the crankcase with new, clean oil. Use only
crankcase lubricants recommended by the en-
gine manufacturer. Refer to Specifications in
this manual or the engine owner’s manual. Use
the recommended oil viscosity for the expected
ambient temperature. Oil with the correct vis-
cositywillaidstartingincoldweatherandassure
proper lubrication in hot weather. Fill up to, but
not above, the “F” mark on the dipstick.
Crankcase capacity is 1.85 quarts (1.75 liters)
plus 1/2 pint (0.24 liters) for the new oil filter.
2. Before removing the dipstick, clean the area
around it to keep any dirt or debris out of the
engine.
3. Remove the dipstick and oil drain plug and drain
the oil into a suitable container. Be sure to allow
ample time for complete drainage.
IMPORTANT: Check the dipstick reading be-
fore adding the last 1/2 pint of oil and fill only to
the “F” mark. DO NOT overfill the crankcase
(oil above “F” mark) as this CAN result in en-
gine overheating, loss of power, and possible
engine damage.
10. Start the engine and check for oil leaks around
the oil filter. Stop the engine, recheck the oil
level, and add oil if necessary. (When the en-
gine is first operated with a new oil filter, the oil
level drops slightly as the filter is filled with oil.)
Mower Deck Gearbox Lubrication
Oil Filter Drain Plug
NOTE: These instructions apply to all mower decks
with gear-driven blades. Refer to DS52 or DS62
Mower Deck Lubrication in this section for the
DS52 or DS62 deck with belt-driven blades. Refer
to Mower Deck Spindle Lubrication in this section
for the DS42 Belt Drive deck with belt-driven blades.
Oil Drain/Oil Filter Location
4. Before removing the oil filter, clean the area
around the filter to keep dirt and debris out of
the engine.
On gear driven decks, the mower deck gearboxes
(tee gearbox and blade drive gearboxes) are
connected as a unitized assembly, and oil flows
freelybetweenthem.Thegearboxesarepermanently
lubricated (oil filled) and sealed requiring no
scheduled lubrication. However, the gearbox oil
seals should be checked every 25 hours for
indication of an oil leak; particularly the lower
seals on the blade drive gearboxes should be
inspected, since they operate in a dirty environment.
If an oil leak is noted, replace the oil seal and
relubricate the gearbox assembly as follows:
5. Remove the old oil filter and wipe off the filter
mounting surface on the engine.
6. Apply a thin coating of clean oil to the rubber
gasket on the replacement oil filter.
IMPORTANT: Use ONLY oil filters from the en-
gine manufacturer (Kohler 28-050-01). After-
market oil filters may not seal properly and/or
may not have the correct pressure relief valve
for proper lubrication.
7. Install the new oil filter on the engine. Turn the
filter clockwise until the rubber gasket contacts
the sealing surface, then tighten an additional
1/2 turn.
1. Remove gearbox cover (footrest). Deck orien-
tation should be the normal operating position.
8. Reinstall the drain plug. Make sure it is tight-
ened to 10 lb·ft (14 N·m).
48
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Maintenance Instructions
LUBRICATION
DS52 or DS62 Mower Deck Lubrication
Blade Drive
Gearboxes
There are several special lubrication requirements
for the DS52 or DS62 mower deck in addition to the
requirements detailed in the Chassis and Deck
Lubrication illustration. Lubricate the locations
shown in the Gearbox, Dolly Wheel, and U-Joint
Lubrication photo and check and maintain oil in the
belt drive gearbox.
1. Check the oil level in the belt drive gearbox ev-
ery 100 hours (or sooner if a visible oil leak has
developed). With the deck in the normal oper-
ating position, remove the level plug in the side
of the gearcase. Add SAE E.P. (Extreme Pres-
sure) 80W-90 (API GL-5) gear lube to maintain
the oil level to the plug. If the oil level is low,
check the gearbox for any indication of an oil
leak. If an oil leak is noted, the gearbox will
need to be removed and rebuilt.
Tee
Gearbox
Mower Deck Gearboxes
(Shown with Gearbox Cover
Removed for Clarity)
2. Clean the area around the individual gearbox
cover plates to prevent contaminants from en-
tering the gearcase.
2. Lubricate the dolly wheel pivot every 25 hours
3. Remove the screws securing the cover plates
on the blade drive gearboxes.
with general purpose grease.
3. Lubricate the U-Joint in the drive shaft every 8
hours with SAE general purpose lithium or
molybdenum base grease.
4. Check the level of lubricant in the gearboxes. If
the lubricant is low, add SAE E.P. (Extreme
Pressure) 80W-90 (API GL-5) gear lube until
the oil level is up to (submerges) the horizontal
shaft in the gearbox (shaft parallel to cover
plate).
Belt Drive
Gearbox
NOTE: In case the gearboxes are completely
drained of oil, approximately 5 fl. oz. (15 cl) of oil
per gearbox is required to refill the gear drive
assembly.
Dolly Wheel
Pivot
NOTE: Since the gearboxes are connected as
a unit by connector tubes, it is necessary to add
oil slowly. Allow a few minutes after adding oil
for the oil to flow throughout the assembly and
the oil level to stabilize before reassembly.
U-Joint
IMPORTANT: DO NOT overfill the deck gear-
boxes. The gearbox assembly is not vented,
and overfilling with oil will cause excessive pres-
sure and result in oil leaks.
Gearbox, Dolly Wheel, and U-Joint Lubrication
Mower Deck Spindle Lubrication
For the DS42 Belt Drive mower deck, lubricate each
deck spindle grease fitting every 25 hours. Use
SAE general purpose lithium or molybdenum base
grease for grease fittings.
5. Check condition of the cover gasket and replace
if worn or damaged. Reinstall gearbox cover
plates; torque screws to 24 lb·in. (3 N·m).
49
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Maintenance Instructions
LUBRICATION
Tractor PTO Gearbox Lubrication
Changing Gearbox Oil
The tractor PTO gearbox is oil filled. No scheduled
oil change is required. However, changing the oil
after the first 100 hour break-in period will extend
gearbox life and is recommended.
Checking Gearbox Oil Level
Check the gearbox oil level every 25 hours, and if
necessary, add oil [SAE E.P. (Extreme Pressure)
80W-90 (API GL-5) gear lube] to maintain oil level to
the FULL mark on the dipstick.
1. Remove the drain plug in the bottom of the
gearcase, drain the oil, and reinstall the plug.
IMPORTANT: DO NOT overfill the PTO gearbox to
2. Refill the gearbox through the dipstick stand-
pipe using 7 to 8 fl. oz. (21 to 24 cl) of SAE E.P.
(Extreme Pressure) 80W-90 (API GL-5) gear
lube. Remove plug in top of gearcase to vent
air when refilling.
avoid oil leakage out of the dipstick standpipe.
If the oil level is low, check the gearbox for any indi-
cation of an oil leak. If an oil leak is noted, the gear-
box will need to be removed and rebuilt.
3. Check that the oil level is at the FULL mark on
the dipstick. DO NOT overfill.
Jackshaft
Gear Axle Lubrication
• The gear axle oil lubrication is SAE E.P. 80W-90
Dipstick
(API GL-5) gear lube.
• Check the axle oil level after every 100 hours of
operation by removing the oil level plug. If additional
oil is needed, remove the breather vent on top of axle
and fill until oil is at the level plug.
PTO
Gearbox
• Change axle oil every 1000 hours or two (2)
years.
Hydrostatic Transmission Fluid
Checking Hydrostatic Transmission Fluid Level
Dipstick Location, Tractor PTO Gearbox
The hydrostatic transmissions are sealed units
and do not need to be opened to check the fluid
level. Hydrostatic fluid level should be checked ev-
ery 25 hours of machine operation. It is preferable
to check the fluid when the fluid is cold. Check
fluid levels as follows:
IMPORTANT: Removing or breaking the seal on
the hydrostatic reservoir cap within the first
1000 hours will VOID THE TRANSMISSION WAR-
RANTY.
1. Park the mower on a level surface. Stop the
engine and wipe dirt and contaminants from
around the base of the reservoir to better see
the COLD mark.
2. The level of the oil can be seen through the side
of the opaque reservoir (DO NOT REMOVE
RESERVOIR CAP); using a light next to the
reservoir will help make the level more visible.
50
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Maintenance Instructions
LUBRICATION
Grease Fitting and Oil Point Lubrication
Reservoir Cap
Lubricatethegreasefittingsandoilpointsafterevery
25 hours of operation. Lubricate more often when
operating in dusty or dirty conditions. Use SAE
generalpurposelithiumormolybdenumbasegrease
for grease fittings and light machine oil (SAE 10) to
lubricate oil points. Lubricate the locations shown
in the Chassis and Deck Lubrication Points
illustration.
NOTE: PTO universal joints (on the deck and trac-
tor) require routine lubrication after every 8 hours
of running time. Remove tractor PTO quick discon-
nect tube assembly for easy access to grease fit-
tings.
Air Bleed Plug
Cold Level
Transmission Reservoir and
Air Bleed Plug Location
NOTE: The best way to lubricate the PTO tube half
of the universal joint assembly is to remove it from
the tractor. See instructions for removing and install-
ing PTO quick coupler, refer to Deck Installation in
Mower Deck Installation on Tractor in the Assem-
bly Instructions.
3. The reservoir has a fluid level COLD mark. The
reservoir oil level should ALWAYS be at or
slightly above the COLD mark.
4. If the fluid is below the COLD mark (or the trans-
mission is not performing properly) contact
your local dealer. Attempting to add fluid or
service the transmission may VOID THE
TRANSMISSION WARRANTY.
51
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Maintenance Instructions
LUBRICATION
Ident
No.
Lubrication
Type
No.
Places
Ident
No.
Lubrication
No.
Places
Location
Location
Type
1
2
3
4
5
6
7
8
Deck Caster Wheel Fork Pivot
Deck Caster Wheel Bearing
Blade Spindle
PivotAssembly, Tilt-Up Deck
Deck SupportArm Socket
RightAngle Gearbox
Universal Joint ShaftAssembly Grease**
Dolly Wheel Retract
Lever and Linkage
Grease
Grease
GreaseΔ
Grease
Grease
Oil*Δ
2
2
3
4
2
1
1
1
27
28
ClutchActuator Push Rod
Belt Tightener Pivot,
PTO Clutch
BrakeActuator Rod and Brake
Band Pivot Pins (Clevis)
Choke Control Cable Ends
BrakeActuator Pivot
Catcher Hinge Point
Throttle Control Cable Ends
Engine Oil
Belt Tightener Pivot,
Blower Drive
Belt Tightener Pivot,
Ground Drive
PTO Gearbox Dipstick
Hydrostatic Drive
Choke Control Pivot
Throttle Control Pivot
Grease
Grease
2
1
29
Oil
3
30
31
32
33
34
35
Oil
Grease
Oil
Oil
Oil***
Grease
2
1
2
2
1
1
OilΔ
9
10
11
12
13
14
15
Dolly Wheel Pivot
IdlerArm Pivot
Grease
GreaseΔ
Oil*
Oil*
Grease
Oil
1
1
1
2
4
2
1
Tee Gearbox, Deck
Blade Drive Gearbox
Steering Lever Pivot
Body Hinge Point
Deck-to-PTO Coupling
(Grease Spline SlideArea)
(FSC) Friction Body Pivot
FSCActuator Rod Pivot Pins
FSC Lever Pivot
36
Grease
1
37
38
39
40
Oil***
Oil***
Oil
1
2
1
1
Grease
16
17
18
19
Grease
Oil
Grease
Grease
1
2
1
1
Oil
*
Gearboxes are permanently lubricated and sealed re-
quiring no scheduled lubrication. Oil level should be
checked only when an oil leak is noted. Refer to Mower
Deck Gearbox Lubrication in this section.
FSC Lever Fork
(Grease SlideArea)
Deck SupportArm Pivot
GearAxle
Universal Joint TubeAssembly
Parking Brake Lever
Universal Joint Quick Connect
Spline (Grease SlideArea)
Belt Tightener Pivot,
Jackshaft Drive
20
21
22
23
24
Grease
Oil***
Grease**
Grease
Grease
2
2
1
1
1
** Grease every eight (8) hours.
*** Refer to Gear Axle Lubrication, Engine Oil, Tractor
PTO Gearbox Lubrication, and Hydrostatic Trans-
mission Fluid in this section.
Δ
Belt Driven Decks Only
NOTE: DC42 and DS62 Tilt-Up Decks are shown for reference.
For other Deck Lubrication Points, Refer to Deck and
Carrier Frame Illustrated Parts Manual.
25
26
Grease
1
1
PTO Clutch Lever Pivot
Grease
1
1
3
10
2
2
3
3
4
5
9
8
7
6
5
4
Lubrication Points for Optional Belt Driven Decks (DS62 Shown)
52
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Maintenance Instructions
LUBRICATION
1
1
2
2
11
12
12
7
4
5
4
4
13
14
5
4
15
17
14
13
16
18
19
33 & 40
20
38
21
20
21
30 & 39
22
23
38
24
37
36
25
26
27
31
27
35
34
28
29
30
33
32
32
Chassis and Deck Lubrication Points (DS42 Shown)
53
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Maintenance Instructions
CLEANING
CLEANING
Enginaire™ Air Cleaner
A remote mounted Enginaire™ air cleaner pro-
vides the air filtering function. The paper filter
element slides over an outlet tube inside the air
cleaner canister with radial sealing action, elimi-
nating the possibility of dust leaks due to improp-
er filter installation. Intake design, internal baf-
fling, and a dust ejection valve provide dust
separation and automatic precleaning action.
Daily or frequent servicing of the air cleaner is not
required. Use the air filter restriction gauge on the
air cleaner outlet to determine when the air filter
needs servicing -- a yellow indicator will show when
the filter is overly restricting airflow into the engine.
CAUTION
If a pressure washer is used on the ex-
posed working parts, avoid water on the
electrical parts and the engine cooling
system.
Engine Air Cleaner System
Turbine Precleaner
Do frequently check the Turbine Precleaner
(located in the end cap of the air cleaner assembly)
for free movement of the internal fan. Shine light
into end cap to verify movement of fan with engine
running.
IMPORTANT: Use only Enginaire™ air filter ele-
ments for replacement (Walker 5090-1 or 5090-3).
Aftermarket filters may not seal properly or filter effi-
ciently.
Enginaire™
Air Cleaner Cover
Primary Filter
Element
Air Filter
Turbine
Precleaner
Restriction Gauge
Safety
Filter
Enginaire™
Air Cleaner
Air Cleaner
Band
Hose
Clamp
Dust Ejection
Valve
Engine
Air Intake
Hose
Hose
Clamp
Engine Air Cleaner System Components
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Maintenance Instructions
CLEANING
2. Remove the filter element by pulling it out of the
Cover
canister. There will be some initial resistance
as the filter seal breaks loose and slides off of
the outlet tube. Gently move the end of the
filter up and down and side to side or twist to
loosen the seal. Use gentle action to minimize
the amount of dust dislodged as the filter is re-
moved.
Canister
3. Discard the filter element if excessive air flow
restriction has been indicated by the air filter
restriction gauge and proceed to Step 6. Clean
the filter element by gently tapping on a flat,
hard surface. If excessive restriction still exists
after cleaning the element, it should be re-
placed.
Filter
Element
Air Cleaner Components
(Shown with Cover Being Removed)
IMPORTANT: The Enginaire™ air cleaner uses a
dry paper-type air filter element. NEVER apply oil to
the paper element.
NOTE: Use care when cleaning the filter ele-
ment. The filter element and/or seal surface
may be damaged by tapping too hard or hitting
on an uneven surface or sharp edge. Washing
the element in water or cleaning solution is not
recommended. Do not try to clean the element
with compressed air. Remember replacing a fil-
ter is less expensive than replacing a dusted
engine.
Push Button to Reset
Indicator After Service
4. Use a bright light inside the element to inspect
for damage. Check the element very carefully
for pin holes or other damage that will allow
dirt to leak through the paper media. Replace
element if necessary.
Air Filter Restriction
Gauge
5. Check the condition and resilience of the radial
sealing surface (inside of the open end) of the
filter. Replace the filter if any cracks, tears, or
other damage to the sealing surface are noted.
Air Filter Restriction Gauge Location
Inspect the paper element after every 100 hours of
service and replace the element and safety filter ev-
ery 400 hours (or when dirty or damaged). More
frequent replacement may be required when operat-
ing in extremely dusty conditions as indicated by the
air filter restriction gauge. Service the air cleaner as
follows:
6. Without removing, visually inspect the condition
of the safety filter for damage or holes. The
safety filter should only be removed for replace-
ment every 400 hours (or when dirty or dam-
aged).
IMPORTANT: Prior to removing the safety filter,
make sure the inside surface of the air cleaner
canister is clean. This will minimize the risk of
dirt entering the outlet tube which can cause pre-
mature engine wear.
1. Unlatch and remove Enginaire™ air cleaner
cover. Wash the cover and dust ejection valve.
Check that these components are in good con-
dition. The dust ejection valve is subject to wear
and deterioration and should be inspected care-
fully and replaced every 2 years or when dam-
aged. The lips of the valve should close and fit
together; any cracks, deformation, or wear in
the valve is cause for replacement.
7. After removing the safety filter, use a clean,
damp cloth and wipe the interior of the air clean-
er canister clean. Use special care to clean
both the inside and outside surfaces of the
outlet tube.
55
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Maintenance Instructions
CLEANING
IMPORTANT: Any dust left on the inside of the
outlet tube will go into the engine and cause
wear.
Cover
Latch
8. Check the outside surface of the outlet tube for
smoothness and cleanness (this is the sealing
surface).
9. Insert and seat the safety filter and primary filter
element carefully into the canister, applying
pressure at the outer rim of the filter; not at the
flexible center. Make sure the filter element is
completely in place before installing the cover.
NOTE: DO NOT use petroleum based lubri-
cants on the sealing surfaces of the filter; use
talcum powder or dry silicone lubricants if re-
quired for filter installation.
Cover
Latch
Safety Filter
Canister
Proper Orientation of Air Cleaner Cover
11. Check the air intake hose for cuts, nicks, cracks,
etc., and the hose clamps for tightness.
12. Reset the air filter restriction gauge (press but-
ton on the end of the indicator).
Primary
Filter Element
Engine Cooling System
Radial Sealing
Surface
Cooling Air Intake System
To prevent engine overheating and possible engine
damage, clean grass clippings, chaff, and dirt from
the rotating engine air intake screen after every 8
hours of operation. In certain mowing conditions
(dry grass, leaves, tree “cotton”, etc.), it may be nec-
essary to check and clean this area several times
each day to prevent engine overheating. Also, visu-
ally check inside cylinder head shroud and between
cylinder head fins for material packed in this area
which would prevent cooling airflow; remove shroud
and clean as required.
Air Filter Element Replacement
10. Install the Enginaire™ air cleaner cover. Latch
the two (2) cover latches.
CAUTION
Operating the engine with a blocked air
intake screen, dirty or plugged cooling
fins, and/or cooling shrouds removed will
cause engine damage from overheating.
56
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Maintenance Instructions
CLEANING
Cylinder Head Cooling Fins
It is essential for performance and longevity of the
air-cooled engine to keep the cylinder head cooling
fins clean and free of obstruction. After every 8
hours of operation, check the performance of the
cooling system by starting the engine, holding a
hand adjacent to the cylinder head, and feeling the
cooling airflow. If there is little or no airflow, clean
the cooling fins as described below.
Check Airflow
with Hand
DANGER
Make sure to keep hands clear of exhaust
pipe, muffler, and moving parts when
checking airflow.
Cooling System Airflow
Grass Buildup in Mower Deck Housing
DANGER
Every 100 hours, inspect and clean the cooling fins
(more often when operating in extremely dusty, dirty
conditions). Remove the two (2) cooling fin access
panels in the engine shroud and clean the cooling
fins and external surfaces using compressed air.
Make sure to reinstall the access panels before op-
erating the engine.
Before raising or removing the mower
deckforcleaning, stoptheengine, remove
the ignition key, and disconnect the spark
plug wires.
NOTE: If dirt is packed into the cooling fins it may
be necessary to remove the engine shroud in order
to thoroughly clean the cooling fins.
1. Raise the deck lock lever handle on each side
of the carrier frame and pull out to release car-
rier frame for tilting action.
Engine Cooling
Fin Access Panels
2. Using the carrier frame lift handle, raise deck to
the TILT-UP position and insert the deck hook
into the tilt-up latch on the tractor body.
Kohler Engine
Shroud
Tilt-Up Hook and
Latch Connected
Tilt-Up
Latch
Engine Cooling Air
Intake Screen
Tilt-Up
Hook
Engine Cooling Air Intake Screen and
Cooling Fin Access Panels
IMPORTANT: Yearly, it is good maintenance prac-
tice to remove the engine cooling shroud and clean
the cylinder head cooling fins thoroughly to prevent
overheating and extend engine life. Make sure cool-
ing shroud is reinstalled properly. This procedure
will require removing the engine from the chassis.
Deck Lock Lever
Deck Secured in TILT-UP Position
57
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Maintenance Instructions
CLEANING
1. Remove the GHS blower drive belt tension by
depressing the idler pulley on the tightener arm.
Roll the belt off the blower pulley. The belt
should be clear of the blower pulley, allowing
free movement of the blower wheel.
DANGER
Do not operate the mower with deck in tilt-
up position. Do not move the tractor with
the deck in the tilt-up position.
IMPORTANT: With the belt removed, the blow-
er wheel must spin freely. Any binding or drag-
ging of the wheel is an indication of dirt build-
up. This buildup must be cleaned to avoid
abrasive wear of the blower blades, excessive
power loss and eventual loss of blower perfor-
mance (clogging).
3. Clean grass buildup underneath the deck using
a pressure washer (and scraper if required).
NOTE: While some degree of material buildup
in the mower deck housing can be tolerated, a
point is finally reached where cutting quality
deteriorates and clogging begins to occur
because of too much buildup on the baffling and
housing.
2. Use a pressure washer or water spray, and di-
rect the spray inside the blower housing against
the blower blades. Water pressure will cause
the blower wheel to begin to spin and the com-
bination of spinning action and water will effec-
tively wash the inside of the housing. Spray
may be directed against the blower blades ver-
tically and horizontally to cause rotation in both
directions for thorough washing action. Wash
blower until the blower wheel spins freely in
both directions.
4. Lower the deck to the normal operating position
and re-engage the deck lock levers.
CAUTION
Do not operate machine with deck tilt-up
pivot joint unlocked.
3. Reinstall the GHS blower drive belt by reversing
the removal procedure.
GHS Blower
Blower
Pulley
GHS Blower
Drive Belt
Normally, the GHS blower operates with no mainte-
nance or cleaning. However, when mowing grass
that is dirty and damp (especially springtime mow-
ing), a deposit of dirt may accumulate inside the
blower housing, causing wear and binding of the
blower wheel. When operating in these conditions,
inspect the blower frequently for dirt buildup.
Blower
Drive Pulley
NOTE: A visual clue of binding of the blower wheel
is the blower blade tips are polished from rubbing
on dirt.
Depress Idler Pulley
Down to Relax Belt
When a dirt deposit is found, use a high pressure
washer or water spray to clean the inside of the
housing as follows:
Belt Tightener
Idler Pulley
DANGER
Collapse Blower Belt Tightener
to Remove GHS Blower Drive Belt
Before attempting to wash the blower,
stop the engine, remove the ignition key,
anddisconnectthesparkplugwires. Wear
goggles or face shield.
58
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CLEANING/
CHECKING/SERVICING
Maintenance Instructions
GHS Exhaust Screen
CHECKING/SERVICING
Refer to Cleaning the GHS Exhaust Screen in Op-
erating Instructions.
DANGER
Hydrostatic Transmission Cooling Fins
To prevent accidental starting of the en-
gine when servicing or adjusting the ma-
chine, remove the key from the ignition
switch and disconnect the spark plug
wires.
Keeping the cooling fins on the hydrostatic transmis-
sions clean and free of obstruction is essential to
avoid overheating the transmission fluid and short-
ening transmission life. The cooling fins should be
checkedevery100hours;andcleanedifnecessary.
To clean the fins, use compressed air and/or a pres-
sure washer. The cooling fins extend all the way
around the housing -- the fins underneath need to
be clean as well as the more visible fins above. Also,
pay close attention to the area under the drive pulley.
Security of Air Filtration Components
NOTE: The following inspection is only an external
inspection and should be done without “dis-
turbing” the filtration components.
IMPORTANT: In case an oil leak develops on the
input shaft, the cooling fan blowing dusty air and oil
on the transmission will quickly pack the cooling
fins with oily dirt. If this condition occurs, replace
the seal immediately to avoid overheating and dam-
aging the transmission. The input shaft assembly
and seal are easily replaced without removing the
transmission from the machine.
On a daily basis, visually inspect the external condi-
tion of the complete air cleaner system. The follow-
ing items should be inspected:
1. Check the Enginaire™ air cleaner canister for
damage. Make sure the cover is in place and
the cover latch is secure - do not run the engine
without the air cleaner cover in place and se-
cure.
An additional procedure in maintaining transmission
cooling is to inspect the cooling fans. Replace the
fan(s) if blades are missing or damaged.
2. Inspect the air intake hose for cracks, nicks,
cuts, etc., and check the hose clamps for tight-
ness.
Cooling Fins
Cooling Fan
3. Check to make sure the air filter restriction
gauge is in place and hose connections are
secure.
Battery
NOTE: For initial battery service during setup, refer
to Battery Service in Assembly Instructions.
IMPORTANT: Make sure battery is securely mount-
ed in the frame. A loose battery may cause damage
tothecaseresultinginacidleakageandseveredam-
age to the machine. A hazard may be created by
damage to critical working parts and safety systems.
Hydrostatic Transmission Cooling Fins
Electrolyte Level
The battery electrolyte level should be checked af-
ter every 25 hours of operation. To check electro-
lyte level:
1. Remove battery cell filler caps.
2. Check the electrolyte level. If the level is below
the bottom of the vent well, fill with drinking wa-
ter to the bottom of the vent wells [1/4 to 1/2 in.
(6 to 13 mm) above the plates].
3. Replace filler caps.
59
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CHECKING/SERVICING
Maintenance Instructions
IMPORTANT: DO NOT overfill the battery. Electro-
lyte will overflow through the vented caps onto parts
of the machine and WILL result in severe corrosion.
Tire Pressure
Inflate tires to pressures shown below:
Deck Caster Wheel = 20 PSI (137 kPa)
Drive = 15 PSI (103 kPa)
Cleaning the Terminals
Rear = 20 PSI (137 kPa)
If battery terminals are corroded, remove battery
from the mower. Using a wire brush, remove corro-
sion with a solution of one part baking soda and
four parts water. Rinse with clean water. Coat the
terminals with petroleum jelly or terminal protector
spray to retard further corrosion.
Wheel Bolt Torque
Check the eight (8) lug bolts that mount the drive
tires. Every 100 hours they should be torqued to
75 to 85 lb·ft (102 to 115 N·m).
Charging the Battery
Sharpen Mower Blades
Check the battery charge by measuring the specific
gravity of electrolyte; if specific gravity is less than
1.225, the battery will need to be charged as follows:
Check mower blade(s) for straightness, sharp-
ness, condition of the cutting edge, and balance
every 10 hours of operation (or more often when
mowing abrasive type grass or operating on sandy
soils). Replace blades if worn, bent, cracked, or
otherwise damaged (refer to REPLACING/RE-
PAIRING the Mower Blades in this section). Use
the following procedure to check and sharpen
blades:
1. Charge the battery at 15 amps for 10 minutes.
DO NOT exceed 20 amps maximum recom-
mended charging rate. Charge until specific
gravity is at least 1.250. Total charging time
should not exceed one (1) hour.
2. After charging the battery, use distilled water to
adjust the electrolyte level to the bottom of the
vent wells [1/4 to 1/2 in. (6 to 13 mm) above the
plates].
NOTE: Keep blades sharp - cutting with dull blades
not only yields a poor mowing job but slows the
cutting speed of the mower and causes extra wear
on the engine and blade drive by pulling hard.
DANGER
1. Stop the engine, remove ignition key, and dis-
connect the spark plug wires before raising the
mower deck to service blades.
BATTERIES PRODUCE EXPLOSIVE GASES
2. Raise the deck and secure it in the TILT-UP
position. Refer to CLEANING the Grass Build-
up in Mower Deck Housing in this section for
deck raising instructions.
• Charge the battery in a well-ventilated
area, so that gases produced while charg-
ing can dissipate.
• Keep sparks, flames, and smoking ma-
DANGER
terials away from the battery at all times.
• Make sure the battery cap vents are
NEVER operate cutter blades with the
deck in the raised position.
open (check manifold vent on each cap).
• Make sure the battery charger is un-
plugged before connecting or discon-
necting cables to the battery.
NOTE: PTO shaft must be disconnected be-
fore checking blades for straightness.
3. Check the blades for straightness by marking
the blade tip position inside the deck housing,
and then rotating the opposite end of the blade
to the same position and comparing. If the dif-
ference in blade tip track is more than 1/8 in.
(3 mm), the blade is bent and should be re-
placed.
60
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CHECKING/SERVICING
Maintenance Instructions
6. Check blade balance by positioning the blade
horizontally on a blade balancer or use a nail
or shaft through the center hole. If either end of
the blade rotates downward, grind (remove)
metal on that end until the blade will balance.
The blade is properly balanced when neither
end drops. Balance of a blade is generally
maintained by removing an equal amount of
material from each end of the blade when
sharpening.
WARNING
DO NOT try to straighten a blade that is
bent. NEVER weld a broken or cracked
blade. ALWAYS replace with a new blade
to assure safety.
4. If the blade cutting edge is dull or nicked, it
should be sharpened. Remove blades for
sharpening by grasping the end of the blade us-
ing a rag or a thick, padded glove, while loosen-
ing and removing the nut, lock washer, and flat
washer that mounts the blade.
5. Grind cutting edge at the same bevel as the
original. Sharpen only the top of the cutting
edge to maintain sharpness.
Blade Balancer
NOTE:
Blades can be sharpened with an
electric blade sharpener, conventional electric
grinder, or a hand file.
Blade Balanced on Magnetic
Wall-Mounted Balancer
CAUTION
7. Mount the blade with wing tips pointing up into
the housing. For gear driven decks reinstall
the blade, washer, lock washer, and nut. Tight-
en the nut to 60 lb·ft (81 N·m). For belt driven
decks reinstall the spacer (if applicable), blade,
washer, and bolt. Tighten the bolt to 70 lb·ft
(90 N·m).
ALWAYS wear eye protection and gloves
when sharpening a blade.
Sharpen at
Intersection
Wear Area
Original 30° Angle
NOTE: When reinstalling blades on GHS models,
remember, the blades turn toward each other
(counter-rotate) and the RH and LH blade cannot be
switched. Check for proper blade rotation before
installing blades on the deck. Refer to Blade Rota-
tion for GHS Mower Deck illustration shown in
Clogging Checklist in Operating Instructions for
correct blade rotation.
30°
Wing
Tip
Do Not Grind or
Sharpen on Underside
Drive Belts
Raise the body and inspect the condition of the
four (4) belts every 25 hours of operation - engine
PTO drive, jackshaft drive, hydrostatic ground drive,
and GHS blower drive. If the belts show signs of
cracking or deteriorating, the belts should be re-
placed. Refer to REPLACING/REPAIRING the
Drive Belts in this section.
Mower Blade Profile For Sharpening
61
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CHECKING/SERVICING
Maintenance Instructions
Mower Deck Gearbox Oil Seals
Blade Brake Action
The mower deck gearbox seals should be inspected
every 25 hours for evidence of oil leaking; particu-
larlytheloweroilsealonthebladedrivegearbox.
This seal is protected by the trash guard on the blade
hub and seal protector plate on the housing, but is
still vulnerable to seal damage due to operating in
an adverse environment. The mower blade must be
removed for inspection of the seal, so it is recom-
mendedtoinspectthegearboxsealswhenblades
are removed for sharpening. If an oil leak is not-
ed, the seal should be replaced and the gearbox
assembly relubricated. Refer to LUBRICATION for
Mower Deck Gearbox Lubrication in this section.
WARNING
It is important to check and maintain blade
brake action for safe operation of the ma-
chine.
Check the function of the cutter blade brake and
blower brake by engaging the blade clutch (PTO),
operating the engine at full throttle, then disengag-
ing the clutch and measuring how quickly the blades
stop. Watch the rotation of the blade drive shaft and
blower pulley as a visual indication that movement
has stopped. If the brake is working properly, all
rotation will stop five (5) seconds after disen-
gagement of the clutch. If the brake system mal-
functions - blades do not stop in five (5) seconds -
adjust or repair the brake before operating the
mower. Contact your Walker dealer for this service
or refer to the Walker Service Manual.
Spark Plugs
Every 200 hours of operation, remove the spark
plugs, inspect, clean, and reset the gap (or replace
with new plugs). Before removing the spark plugs,
clean the area around the base of the plugs to keep
dirt and debris out of the engine. Clean spark plugs
with a wire brush. DO NOT use an abrasive grit type
cleaner. If the electrodes are burned short or pitted,
replace plugs with Champion‚ type RC12YC (or
equivalent). Check spark plug gap with a wire-type
feeler gauge and set the gap at 0.030 in. (0.76 mm).
Reinstall and tighten to between 18 and 22 lb·ft
(24 to 30 N·m).
Safety Switch System
WARNING
It is important to check and maintain the
safety switch system for safe operation of
the machine.
Fuel Lines and Clamps
Every year, inspect the fuel supply line from the
tank to engine for deterioration or damage. Also,
inspect the fuel line clamps for tightness. Good
preventive maintenance calls for complete replace-
ment of fuel lines and clamps every two (2) years.
There are three (3) safety interlock switches on the
tractor; Seat Switch, FSC Neutral - Park Switch, and
PTO Switch.
Engine Starter
NOTE: There is a 1/2 second time delay function on
the seat switch to avoid engine power interruption
when driving over bumps.
Yearly or every 500 hours disassemble and clean
the solenoid shift starter. Refer to the Kohler Service
Manual for this procedure or contact an authorized
Kohler engine dealer to perform this service.
If any of the following conditions occur during start-
ing or operating, a safety interlock switch may be
malfunctioning. Contact your Walker dealer for trou-
bleshooting and/or replacement.
• With or without an operator in the seat, the engine
starts with the Forward Speed Control (FSC) and/or
the PTO engaged.
62
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CHECKING/SERVICING/
REPLACING/REPAIRING
Maintenance Instructions
REPLACING/REPAIRING
• With an operator in the seat, the engine starts but
dies soon after the Forward Speed Control (FSC) or
PTO is engaged.
DANGER
• Without an operator in the seat, the engine starts
and continues to run with the Forward Speed Control
(FSC) and/or PTO engaged.
To prevent accidental starting of the en-
gine when replacing parts or repairing the
machine, remove the key from the ignition
switch and disconnect the spark plug
wires.
• With an operator in the seat, the Forward Speed
Control (FSC) and PTO disengaged and panel horn
works, but the starter is not engaging.
Forward Speed Control Friction Lock
IMPORTANT: ALWAYS use genuine factory re-
placement parts. Substitute parts CAN result in
product malfunction and possible injury to the op-
erator and/or others.
The FSC friction lock is designed to hold the se-
lected forward travel speed when the steering le-
vers are moved and yet the friction is not too heavy
to make moving the FSC control difficult (too much
friction). The procedure for checking the FSC fric-
tion lock is as follows:
Drive Belts
There are four (4) individual belts on GHS models:
• Engine PTO Drive Belt (3 Groove Power Band)
• Jackshaft Drive Belt
1. Place the FSC in the full FORWARD position
and pull both steering levers back; the FSC le-
ver should not move. If the FSC lever moves
back when the steering levers are pulled back,
the friction needs to be increased.
• GHS Blower Drive Belt
2. With the steering levers held back, move the
FSC lever back from the FORWARD position.
With a proper amount of friction adjusted, the
FSC lever should move back with a slight
amount of resistance (friction). If the FSC lever
movement is “stiff”, the friction needs to be
decreased.
• Hydrostatic Ground Drive Belt
The belts may be removed and replaced using the
procedures described on the following pages.
If the FSC friction lock needs to be adjusted, contact
your Walker dealer or refer to the Walker Service
Manual.
63
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Maintenance Instructions
REPLACING/REPAIRING
Jackshaft
Drive Belt
Engine PTO
Belt
GHS Blower Belt
Hydrostatic Ground
Drive Belt
Belt Locations
64
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Maintenance Instructions
REPLACING/REPAIRING
Engine PTO Drive Belt (3 Groove Power Band)
c. Raise the clutch lever (engage position) to
lift the clutch idler away from the belt.
1. To remove the engine PTO drive belt:
d. Next remove the belt from the engine pulley
and then the PTO drive pulley.
a. Remove the jackshaft drive belt from its
idler pulley (by pushing down on idler pul-
ley) and let the belt drop down out of the
way.
2. Install the PTO drive belt by reversing the re-
moval procedure.
IMPORTANT: Make sure the belt is installed
inside the four (4) belt guide pins.
NOTE: Step (a) is not essential to removing the
PTObelt,butitmakesmoreroomtoworkwiththe
PTO belt.
Check and make the following adjustments:
a. Clutch engagement for proper belt tension
b. Clutch disengagement and brake action
b. Push the clutch idler pulley down (until the
PTO belt tightener stop block contacts the
frame) and then shift the belt off the idler
pulley (to the inside).
Clutch
PTO Belt
Linkage
PTO Belt Tightener
Tightener Arm
Stop Block
Pull UP to Engage
Belt
Guide
Engine
PTO Belt
Engine
Pulley
Blade Clutch Lever
in the DOWN Position
Belt Guides
(Bottom Guide Not Visible)
Clutch Idler
Pulley
Belt
Guide
Micro-V Pulley
(GHS Blower Drive)
PTO Drive
Pulley
Engine PTO Drive Belt Removal
65
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Maintenance Instructions
REPLACING/REPAIRING
Jackshaft Drive Belt
b. Relax the belt by depressing the spring-
loaded idler arm.
1. To remove the jackshaft drive belt:
a. Remove the engine PTO drive belt, as
described in previous section.
c. Roll the belt off the jackshaft pulley and
remove.
Push Idler Pulley Down to Relax Belt
Idler Pulley
Jackshaft
Jackshaft
Drive Belt
Engine
Pulley
Tension Spring
Jackshaft Drive Belt (Disengaged)
2. Reverse the removal procedure to replace the
jackshaft drive belt.
Idler Arm
Jackshaft
Engine
Pulley
Jackshaft
Drive Belt
Tension Spring
Jackshaft Drive Belt (Engaged)
66
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Maintenance Instructions
REPLACING/REPAIRING
GHS Blower Drive Belt
1. Remove the GHS blower drive belt tension by
depressing the idler pulley on the tightener arm.
Roll the belt off the blower pulley. The belt
should be clear of the blower pulley, allowing
free movement of the blower wheel.
GHS Blower
Drive Belt
Blower Drive
Pulley
Blower
Pulley
Depress Idler Pulley
Down to Relax Belt
Belt Tightener
Idler Pulley
(Disengaged)
GHS Blower Drive Belt Assembly (Disengaged)
2. Reverse the procedure to install the GHS blower
drive belt.
Idler Pulley
(Engaged)
GHS Blower Drive Belt Assembly (Engaged)
67
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Maintenance Instructions
REPLACING/REPAIRING
Hydrostatic Ground Drive Belt
1. To remove the hydrostatic ground drive belt:
b. Slide belt off pulleys, then release the idler.
a. Raise the spring-loaded belt tightener arm
and idler pulley to relax belt.
Jackshaft
Belt Tightener Arm
Idler Pulley
Transmission
Drive Pulley
Spring
Hydrostatic
Ground Drive Belt
Hydrostatic Ground Drive Belt Assembly (Disengaged)
2. Reverse the procedure to install the hydrostatic
ground drive belt.
Spring
Belt Tightener Arm
Idler Pulley
Hydrostatic
Ground Drive Belt
Hydrostatic Ground Drive Belt Assembly (Engaged)
68
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Maintenance Instructions
REPLACING/REPAIRING
Fuel Filter
Blade Overload Shear Bolts
NOTE: Blade shear bolts are not used on belt driv-
en decks.
DANGER
On gear driven decks each cutting blade is keyed to
a blade hub by two (2) shear bolts (10-24 x 5/8 in.
stainless steel machine screws). These bolts are
designed to shear and protect the blade drive gear-
box from damage if the blade encounters a shock
load.
Gasoline is extremely flammable and can
be highly explosive. To minimize danger:
• Use only an approved fuel container for
gasoline.
• DO NOT allow open flames or sparks
near the machine while performing main-
tenance or refueling; DO NOT smoke
while working with fuel.
• Wipe up spilled gasoline immediately
and completely.
Cutting Blade
Shear Bolts
Model MC19 is equipped with an in-line fuel filter.
Visually inspect the filter periodically, and replace
the filter yearly.
Cutting Blade Shear Bolts
NOTE: Tightening the 5/8-18 blade mounting nut
to 60 lb·ft (81 N·m) is also important for proper
shock load protection. It is important to not over-
tighten the mounting nut since this defeats (over-
rides) the function of the shear bolts.
In-Line
Fuel Filter
If these bolts shear, remove the blade and install
new bolts. Refer to CHECKING/SERVICING in
this section for Sharpen Mower Blades which de-
scribes the blade removal and installation proce-
dure.
Fuel Filter Location
IMPORTANT: Replace the fuel filter only in a clean
area where the fuel line and connections will not be
contaminated by any dust and dirt.
After reinstalling the blade, check blade timing (on
gear driven decks) by moving blades through one
(1) complete revolution. Make sure blade tips pass
clear of each other. If timing is incorrect, contact
your Walker dealer.
1. Expand and slide clamps on either side of the
filter away from filter and pull fuel lines off filter.
2. Replace filter, making sure that the arrow on the
filter is aligned with the fuel flow through the
filter.
3. Verify that the fuel lines and clamps are secure-
ly attached, and that no fuel leaks are present.
69
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Maintenance Instructions
REPLACING/REPAIRING
PTO Shear Pin (If Equipped)
Mower Blades
Mower blades are removed and remounted as de-
scribed in Sharpen Mower Blades instructions.
During the course of sharpening and inspecting
mower blades, if there are any of the following
conditions of wear or damage, blades should be
replaced for reasons of safety and performance of
the machine:
The PTO drive shaft connection to the deck gearbox
has a shear pin to provide shock load protection to
the mower deck drive. This system provides pri-
mary shock protection in case of blade impact and
will normally shear before the individual shear bolts
on the blade hub.
When the PTO pin has sheared, use the following
procedure to replace it:
• An excessive amount of the flat section of the
blade has been ground away (removed) when the
blade is sharpened. Replace the blade when less
than a 3/4 in. (19 mm) flat section remains at the
blade tip.
1. Loosen the two bolts securing the PTO shaft
guard on the deck; lift the guard off. (Holes in
guard are slotted for easy removal.)
2. Rotate U-joint on shaft to align the shear pin
hole with the hole (and shear pin fragment) in
the shaft. Use a punch to drive the remaining
portion of the old shear pin out.
• Examine ends of the blade carefully, especially
the intersection where the flat section of the blade
turns up to form the “wing tip” (refer to Mower Blade
Profile for Sharpening illustration in Sharpen
Mower Blades instructions). Since sand and abra-
sive material can wear metal away in this area, the
blade should be replaced when metal thickness
has worn to 1/16 in. (1.6 mm) or less.
3. Install new shear pin and secure with cotter pin.
Split Spring Pin
(Retains U-Joint Held on Shaft
with Broken Shear Pin)
DANGER
Shear Pin
When blades are operated over sandy
soil, and if blades are allowed to wear, a
“slot” may be worn into the wing tip of
blade. Eventually a piece of the blade
may break off creating a serious potential
for injury or damage.
U-Joint
Tube Assembly
U-Joint
Shaft Assembly
• Check the blades for straightness by marking
blade tip position inside the deck housing and then
rotating the opposite end of the blade to the same
position and comparing. If the difference in blade tip
track is more than 1/8 in. (3 mm), the blade is bent
and should be replaced.
Cotter Pin
PTO Shear Pin
IMPORTANT: Use only Walker P/N 8067-13
shear pins for replacement to provide proper
shock protection -- these pins are hardened to
shear under a specific amount of load.
• Inspect the blade surface, especially in formed
areas, for cracks. Replace the blade if any cracks
are found.
4. Reinstall the PTO shaft guard.
Before operating the deck, inspect the blade over-
load shear bolts and also check blade timing (on
gear driven decks) by moving blades through one
(1) complete revolution. Make sure blade tips
pass clear of each other. If timing is incorrect, con-
tact your Walker dealer.
WARNING
DO NOT try to straighten a blade that is
bent. NEVER weld a broken or cracked
blade. ALWAYS replace with a new blade
to assure safety.
NOTE: Use Walker P/N 8067-10 for heavy duty
gearboxes.
70
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REPLACING/REPAIRING/
ADJUSTMENTS
Maintenance Instructions
Reinstall the blades following procedure in CHECK-
ING/SERVICING for Sharpen Mower Blades in-
structions. If blades are replaced, always use Walk-
er original equipment blades to ensure safety and
optimum performance. The quality and performance
of replacement blades offered by other manufac-
turers cannot be guaranteed, they could be dan-
gerous.
Tilt-Up Deck Adjustable Stop
When the carrier frame hinge joint is properly ad-
justed, the deck lock levers should move in and out
of the engaged and disengaged positions freely. All
four (4) hitch pins used for height adjustment should
sit flush on the washers above the deck pin bushing.
On a level surface, if any pin is sticking up (likely the
front pins), tighten the opposite side or loosen the
same side to lower the pin. Adjustments are made
by loosening the jam nut and tightening or loosening
the set screws on the Deck Mount Pivot Brackets.
Retighten the jam nut when the adjustment is com-
plete.
CAUTION
ALWAYS use genuine factory replace-
ment parts. Substitute parts CAN result
in product malfunction and possible in-
jury to the operator.
ADJUSTMENTS
Steering Handles
Jam Nut
An adjustment range of approximately 3 in.
(76.2 mm) is available on the steering handles - the
handles can be adjusted forward or aft depending
on the arm length of the operator. The handles can
be adjusted by loosening the locknut at the pivot
point and the locknut holding the handle in position
in the adjustment slide. Adjust handles into the most
comfortable position and tighten both locknuts.
Set Screw
Tilt-Up Deck Adjustable Stop
GHS Signal Horn Adjustment
(When Horn Sounds at Wrong Time)
The vertical position of the Grass-Pak® switch is
critical to make sure the catcher box does not over-
fill causing the delivery chute to clog. The vertical
position can be adjusted by moving the aluminum
shaft and vane on the Grass-Pak® switch.
Adjustment
Locknut
Slide
(Position)
1. Position the discharge chute so that it is point-
ing straight back.
a. Turn the ignition switch ON and move the
blade clutch to the ENGAGED position
(engine not running).
Locknut
(Pivot Point)
b. Open the catcher back door and monitor
the spout position (as it oscillates) and
movethebladeclutchtotheDISENGAGED
position and turn the ignition switch to the
OFF position.
Steering Handle Adjustment
71
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Maintenance Instructions
ADJUSTMENTS
DANGER
Exhaust
Screen
4 to 4-1/2 in.
(10.16 to 11.43 cm)
PINCH POINT - SPRING LOADED DOOR
When lowering the door on the GHS
catcher, BE VERY CAREFUL to keep
hands, fingers, etc. out of the hinging
mechanism and away from the door frame
as the door closes. The springs that hold
the door closed during operation are very
powerful, and the door can slam shut with
considerable force.
Adjustment Nut
WARNING
Adjusting the Grass-Pak® Switch
(Side View of Catcher Box)
DO NOT test the Grass-Pak® switch with
the engine running. Projectiles CAN be
thrown out of the grass delivery spout
and CAN cause serious injury to bystand-
ers or property damage.
3. If adjustment is required, loosen front adjust-
ment nut then move aluminum shaft and vane to
the recommended measurement. Adjustments
should be done in very small increments check-
ing the measurement each time until the recom-
mended measurement is achieved.
2. Measure from the exhaust screen (top of catch-
er) to the top of the Grass-Pak® switch actuator
vane, refer to Adjusting the Grass-Pak®
Switch illustration. The proper measurement
should be between 4 and 4-1/2 inches (10.16
and 11.43 cm).
NOTE: It will not be possible to adjust the switch to
give a signal at the precise instant the catcher is full
for a wide variety of mowing conditions. For exam-
ple, wet heavy grass will fill the catcher differently
than dry fluffy grass, causing the signal to come on
a little sooner or later than usual. Primarily, the
switch should be adjusted to give the “full” signal
with a little advance warning before overfilling
and clogging of the grass delivery chute begins (re-
gardless of mowing conditions).
72
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Operator’s Notes
73
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Operator’s Notes
74
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LIMITED WARRANTY
FOR
WALKER
COMMERCIAL RIDER MOWER
1.
WHAT THIS WARRANTY COVERS, AND FOR HOW LONG:
Walker Manufacturing company will, at its option, repair or replace, without charge, any part covered by this warranty which
is found to be defective in material and/or workmanship within one (1) year* after date of sale to the original retail purchaser
unless the product is used for rental purposes, in which case this warranty is limited to ninety (90) days. At Walker’s request,
customer will make the defective part available for inspection by Walker and/or return the defective part to Walker, transpor-
tation charges prepaid. All parts and components of the Walker Mower are covered by this warranty except the following
components which are warranted separately by their respective manufacturers:
Kohler Engine
Battery
The available warranties covering these items are furnished with each mower. Walker does not assume any warranty obliga-
tion, liability or modification for these items, which are covered exclusively by the stated warranty of the respective manufac-
turers noted above.
* Extended warranties are offered for the following powertrain components:
• A three (3) year unlimited hour warranty is offered for the Walker P/N 6200-9 Gear Axle Assembly.
• A three (3) year or 3000 hour (whichever comes first) warranty is offered for Eaton Model 7 Hydrostatic transmissions;
covers full cost of replacement up to 1000 hours of use, and after 1000 hours warranty coverage is prorated against
3000 hours.
2.
WHAT THIS WARRANTY DOES NOT COVER:
A. This warranty does not cover defects caused by depreciation or damage caused by normal wear, accidents, improper
maintenance, improper use or abuse of the product, alterations, or failure to follow the instructions contained in the
Operator’s Manual for operation and maintenance.
B. The customer shall pay any charges for making service calls and/or for transporting the mower to and from the place
where the inspection and/or warranty work is performed.
3.
4.
HOW TO OBTAIN SERVICE UNDER THIS WARRANTY:
Warranty service can be arranged by contacting the dealer where you purchased the mower or by contacting Walker Manu-
facturing Company, 5925 East Harmony Road, Ft. Collins, CO 80528. Proof of the date of purchase may be required to veri-
fy warranty coverage.
WARRANTY LIMITATION:
A. THERE IS NO OTHER EXPRESS WARRANTY.ANY WARRANTY THAT MAY BE IMPLIED FROM THIS PURCHASE
INCLUDING MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE IS HEREBY LIMITED TO THE
DURATION OF THIS WARRANTY AND TO THE EXTENT PERMITTED BY LAW ANY AND ALL IMPLIED
WARRANTIES ARE EXCLUDED. Some states do not allow limitations on how long an implied warranty lasts, so the
above limitations may not apply to you.
B. WALKER WILL NOT BE LIABLE FOR ANY INCIDENTAL, CONSEQUENTIAL, OR SPECIAL DAMAGES AND/OR
EXPENSES IN CONNECTION WITH THE PURCHASE OR USE OF THE MOWER. Some states do not allow the
exclusion or limitation of incidental or consequential damages, so the above limitation(s) or exclusion(s) may not apply
to you.
C. Only the warranty expressed in this limited warranty shall apply and no dealer, distributor, or individual is authorized to
amend, modify, or extend this warranty in any way. Accordingly, additional statements such as dealer advertising or
presentations, whether oral or written, do not constitute warranties by Walker, and should not be relied upon.
D. This warranty gives you specific legal rights, and you may also have other rights which vary from state to state.
75
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WALKERMFG. CO. • 5925E. HARMONYROAD, FORTCOLLINS, CO80528• (970)221-5614
FORM NO. 112513
PRINTED IN USA
©2014 WALKER MFG. CO
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