MODEL STT-31BSD
THIS MANUAL CONTAINS THE OPERATING
INSTRUCTIONS AND SAFETY INFORMA-
TION FOR YOUR SCAG MOWER. READING
THIS MANUAL CAN PROVIDE YOU WITH
ASSISTANCE IN MAINTENANCE AND AD-
JUSTMENT PROCEDURES TO KEEP YOUR
MOWER PERFORMING TO MAXIMUM EFFI-
CIENCY. THE SPECIFIC MODELS THATTHIS
BOOK COVERS ARE CONTAINED ON THE
INSIDE COVER. BEFORE OPERATINGYOUR
MACHINE, PLEASE READ ALL THE INFOR-
MATION ENCLOSED.
© 2004
SCAG POWER EQUIPMENT
DIVISION OF METALCRAFT OF MAYVILLE, INC.
PART NO. 03153
PRINTED 10/04
PRINTED IN USA
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TABLE OF CONTENTS
SUBJECT
Section 1 - General Information
PAGE
1.1 Introduction .............................................................................................................................1
1.2 Directional Reference.............................................................................................................1
1.3 Servicing the Engine and Drive Train Components ................................................................1
Section 2 - Safety Information
Symbols ............................................................................................................................... 2-3
2.1 Introduction .............................................................................................................................4
2.2 Signal Words ...........................................................................................................................4
2.3 Before Operation Considerations ...........................................................................................4
2.4 Operation Considerations ........................................................................................................5
2.5 Roll Over Protection System ..................................................................................................6
2.6 Maintenance Considerations ...................................................................................................8
2.7 Safety and Instructional Decals ..............................................................................................9
Section 3 - Specifications ....................................................................................................10-11
Section 4 - Operating Instructions
4.1 Controls and Instrument Identification ..................................................................................12
4.2 Safety Interlock System........................................................................................................13
4.3 Initial Run-In Procedures ......................................................................................................14
4.4 Starting the Engine ................................................................................................................14
4.5 Ground Travel and Steering ..................................................................................................14
4.6 Engaging the Deck Drive .....................................................................................................15
4.7 Hillside Operation .................................................................................................................16
4-8 Parking the Mower ...............................................................................................................16
4.9 After Operation ....................................................................................................................16
4.10 Removing Clogged Material .................................................................................................17
4.11 Moving Mower with Engine Stopped ...................................................................................17
4.12 Recommendations for Mowing .............................................................................................17
4.13 Adjusting Cutting Height .......................................................................................................18
Section 5 -Troubleshooting Cutting Conditions.............................................................. 19-21
I
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TABLE OF CONTENTS (CONT'D)
SUBJECT
PAGE
Section 6 - Adjustments
6.1 Parking Brake Adjustment ....................................................................................................22
6.2 TravelAdjustments ...............................................................................................................22
6.3 Throttle Control and ChokeAdjustments ..............................................................................24
6.4 BeltAdjustment ....................................................................................................................24
6.5 BeltAlignment ......................................................................................................................24
6.6 Cutter Deck Adjustments .....................................................................................................25
Section 7 - Maintenance
7.1 Maintenance Chart ...............................................................................................................28
7.2 Lubrication Fitting Points ......................................................................................................29
7.3 Hydraulic System ..................................................................................................................31
7.4 Engine Oil .............................................................................................................................32
7.5 Engine Fuel System ..............................................................................................................33
7.6 Engine Air Cleaner................................................................................................................33
7.7 Battery ..................................................................................................................................33
7.8 Drive Belts ............................................................................................................................35
7.9 Cutter Blades ........................................................................................................................35
7.10 Tires ......................................................................................................................................36
7.11 Cutter Deck Gearbox ...........................................................................................................36
7.12 Cooling System .....................................................................................................................37
7.13 Body, Deck, Hopper and Upholstery ....................................................................................38
Section 8 - Illustrated Parts List
Notes ..............................................................................................................................................39
SMST 61"Adv., 72" Adv. Cutter Decks ................................................................................... 40-41
Cutter Deck Controls................................................................................................................ 42-43
Sheet Metal Components.......................................................................................................... 44-45
STT Roll Over Protection ......................................................................................................... 46-47
Deck Drive Components .......................................................................................................... 48-49
Radiator, Coolers & Engine Brackets.................................................................................50-51
Brake & Steering Components..........................................................................................52-53
Fuel & Hydraulic System ......................................................................................................... 54-55
Electrical System ...................................................................................................................... 56-57
Hydraulic Pump Assembly - BDP-21L .................................................................................... 58-59
Wire Harness, STT-31BSD ............................................................................................................60
Replacement Decals................................................................................................................. 61-62
Warranty Statement ............................................................................................. Inside Back Cover
II
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Section 1
GENERAL INFORMATION
Scag approved attachments and accessories:
1.1 INTRODUCTION
GC-STT (p/n 9049, 9039)
GC-STT-CS (p/n 9053, 9041)
Mulch Plate (p/n 9261, 9262)
Hurricane Mulch (p/n 9266, 9267)
Cup Holder (p/n 9240)
Your mower was built to the highest standards in the
industry. However, the prolonged life and maximum
efficiency of your mower depends on you following the
operating, maintenance and adjustment instructions in this
manual.
STT Hitch (p/n 9242)
STT Bumper (p/n 9256)
STT - Suspension Seat (p/n 9270)
STT - Lights (p/n 9279)
Tiger Striper (p/n 9269)
If additional information or service is needed, contact
your Scag Power Equipment Dealer.
Blade Buddy (p/n 9212)
We encourage you to contact your dealer for repairs. All
Scag dealers are informed of the latest methods to
service this equipment and provide prompt and efficient
service in the field or at their service shop. They carry a
full line of Scag service parts.
WARNING:
For pictorial clarity, some illustrations and figures
in this manual may show shields, guards or plates
open or removed. Under no circumstances should
your mower be operated without these devices in
place.
USE OF OTHER THAN ORIGINAL SCAG
REPLACEMENT PARTS WILL VOID THE
WARRANTY.
All information is based upon product information
available at the time of approval for printing. Scag
Power Equipment reserves the right to make
changes at any time without notice and without
incurring any obligation.
When ordering parts, always give the model and serial
number of your tractor. The serial number plate is
located where shown in Figure 1-1.
SERIAL NUMBER
PLATE LOCATION
E
R
O
M
:
1.2 DIRECTION REFERENCE
R
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TS
N
5,832,708
5,865,018
E
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4,991,382
4,998,948
5,118,617
5,826,416
R
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T
F
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FA
F
E
PE
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4,487,006
4,885,903
4,920,733
4,967,543
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The “Right” and “Left”, “Front” and “Rear” of the
machine are referenced from the operator’s right and left
when seated in the normal operating position and facing
the forward travel direction.
M
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1.3 SERVICING THE ENGINE AND DRIVE
TRAIN COMPONENTS
The detail servicing and repair of the engine, hydraulic
pumps and gearboxes are not covered in this manual;
only routine maintenance and general service instructions
are provided. For service of these components during
the limited warranty period, it is important to contact your
Scag dealer or find a local authorized servicing agent of
the component manufacturer. Any unauthorized work
done on these components during the warranty period
may void your warranty.
390S0137A
Figure 1-1Tractor Serial Number Plate Location
USE ONLY SCAG APPROVED ATTACHMENTS
AND ACCESSORIES.
Attachments and accessories manufactured by companies
other than Scag Power Equipment are not approved for use
on this machine.
1
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ISO Symbols
CE Mark
SYMBOL
DESCRIPTION
SYMBOL
DESCRIPTION
Choke
Transmission
Parking Brake
Spinning Blade
48071S
On/Start
Off/Stop
Spring Tension on Idler
Oil
Falling Hazard
2
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SYMBOL
DESCRIPTION
SYMBOL
DESCRIPTION
Slow
Fast
Cutting Element - Basic Symbol
Continuously Variable - Linear
Cutting Element - Engage
Pinch Point
Hourmeter/Elapsed Operating Hours
Cutting Element - Disengage
Read Operator's Manual
Thown Object Hazard
Keep Bystanders Away
3
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Section 2
SAFETY INFORMATION
2.1 INTRODUCTION
Your mower is only as safe as the operator.
The signal word “DANGER” denotes that an extremely
hazardous situation exists on or near the machine that
could result in high probability of death or irrepairable
injury if proper precautions are not taken.
Carelessness or operator error may result in serious
bodily injury or death. Hazard control and accident
prevention are dependent upon the awareness, concern,
prudence, and proper training of the personnel involved in
the operation, transport, maintenance and storage of the
equipment. Make sure every operator is properly trained
and thoroughly familiar with all of the controls before
operating the mower. The owner/user can prevent and is
responsible for accidents or injuries occuring to
themselves, other people or property.
WARNING:
The signal word “WARNING” denotes that a hazard
exists on or near the machine that can result in injury or
death if proper precautions are not taken.
READ THIS OPERATOR’S MANUAL BEFORE
ATTEMPTING TO START YOUR MOWER.
CAUTION:
A replacement manual is available from your authorized
Scag Service Dealer or by contacting Scag Power
Equipment, Service Department at P.O. Box 152,
Mayville, WI 53050 or via the Internet at
The signal word “CAUTION” is a reminder of safety
practices on or near the machine that could result in
personal injury if proper precautions are not taken.
downloaded by using the model and serial number or use
the contact form to make your request. Please indicate
the complete model and serial number of your Scag
product when requesting replacement manuals.
Your safety and the safety of others depends significantly
upon your knowledge and understanding of all correct
operating practices and procedures of this machine.
2.3 BEFORE OPERATION
CONSIDERATIONS
2.2 SIGNAL WORDS
1. NEVER allow children to operate this riding mower.
Do not allow adults to operate this machine without
proper instructions.
This symbol means “Attention! Become Alert! Your
Safety is Involved!" The symbol is used with the
following signal words to attract your attention to safety
messages found on the decals on the machine and
throughout this manual. The message that follows the
symbol contains important information about safety. To
avoid injury and possible death, carefully read the
message! Be sure to fully understand the causes of
possible injury or death.
2. DO NOT mow when children and/or others are
present. Keep children out of the mowing area and
in the watchful care of a responsible adult other than
the operator. Be alert and turn machine off if a child
enters the area.
3. Clear the area to be mowed of objects that could be
picked up and thrown by the cutter blades.
Signal Word:
4. DO NOT carry passengers.
It is a distinctive word found on the safety decals on the
machine and throughout this manual that alerts the
viewer to the existence and relative degree of the
hazard.
5. DO NOT operate the machine under the influence
of alcohol or drugs.
4
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Section 2
2.3 BEFORE OPERATION
12. DO NOT add fuel to a running or hot engine. Allow
the engine to cool for several minutes before adding
fuel.
CONSIDERATIONS (CONT'D)
6. If the operator(s) or mechanic(s) cannot read English
or Spanish, it is the owner's responsibility to explain
this material to them.
13. Keep flammable objects (cigarettes, matches, etc.),
open flames and sparks away from the fuel tank and
fuel container.
7. DO NOT wear loose fitting clothing. Loose
clothing, jewelry or long hair could get tangled in
moving parts. Do not operate the machine wearing
shorts; always wear adequate protective clothing
including long pants. Wearing safety glasses, safety
shoes and a helmet is advisable and is required by
some local ordinances and insurance regulations.
14. Equipment must comply with the latest requirements
per SAE J137 and/or ANSI/ASAE S279 when
driven on public roads.
-NOTE-
If the mower is driven on public roads, it must
comply with state and local ordinances as well as
SAE J137 and/or ANSI / ASAE S279
requirements. Contact your local authorities for
regulations and equipment requirements.
8. Operator hearing protection is recommended,
particularly for continuous operation of the mower.
Wear suitable hearing protection. Prolonged
exposure to loud noise can cause hearing
impairment or loss.
15. DO NOT operate without the side discharge chute
installed and in the down position or with an optional
grass catcher or mulch plate completely installed.
9. Keep the machine and attachments in good operating
condition. Keep all shields and safety devices in
place. If a shield, safety device or decal is defective
or damaged, repair or replace it before operating the
machine.
16. Check the blade mounting bolts at frequent intervals
for proper tightness.
17. Make sure all hydraulic fluid connections are tight
and all hydraulic hoses and lines are in good condition
before starting the machine.
WARNING:
This machine is equipped with an interlock system
intended to protect the operator and others from
injury. This is accomplished by preventing the
engine from starting unless the deck drive is
disengaged, the parking brake is on, the steering
control levers are in the neutral position and the
operator is in the seat. The system shuts off the
engine if the operator leaves the seat with the deck
drive engaged and/or the steering control levers are
not in the neutral postion and the parking brake is
not engaged. Never operate equipment with the
interlock system disconnected or malfunctioning.
2.4 OPERATION CONSIDERATIONS
1. Know the function of all controls and how to stop
quickly.
2. Reduce speed and exercise extreme caution on
slopes and in sharp turns to prevent tipping or loss of
control. Be especially cautious when changing
directions on slopes.
10. Be sure the interlock switches are functioning
correctly.
WARNING:
DO NOT operate on steep slopes. To check a slope,
attempt to back up it (with the cutter deck down). If
the machine can back up the slope without the
wheels slipping, reduce speed and use extreme
caution. ALWAYS FOLLOW OSHA APPROVED
OPERATION.
11. Fuel is flammable; handle it with care. Fill the fuel
tank outdoors. Never fill it indoors. Use a funnel or
spout to prevent spillage. Clean up any spillage
before starting the engine.
5
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Section 2
13. Take all possible precautions when leaving the machine
unattended, such as disengaging the mower, lowering
the attachments, setting the parking brake, stopping the
engine, and removing the key.
2.4 OPERATION CONSIDERATIONS
(CONT'D)
3. To prevent tipping or loss of control, start and stop
smoothly, avoid unnecessary turns and travel at reduced
speed.
14. Disengage power to the attachments when transporting
or when not in use.
4. When using any attachment, never direct the discharge
of material toward bystanders or allow anyone near
the machine while in operation.
15. The machine and attachments should be stopped and
inspected for damage after striking a foreign object,
and damage should be repaired before restarting and
operating the machine.
5. Before attempting to start the engine, with the operator
in the seat, disengage power to the cutter deck, place
the steering control levers in the neutral position and
engage the parking brake.
CAUTION:
DO NOT touch the engine or the muffler while
the engine is running or immediately after
stopping. These areas may be hot enough to
cause a burn.
6. If the mower discharge ever plugs, shut off the engine,
remove the ignition key, and wait for all movement to
stop before removing the obstruction.
WARNING:
WARNING:
DO NOT run the engine inside a building or a
confined area without proper ventilation. Exhaust
fumes are hazardous and could cause death.
DO NOT use your hand to dislodge the clogged
discharge chute. Use a stick or other device to
remove clogged material.
16. Keep hands and feet away from cutter blades and
moving parts. Contact can injure.
7. Be alert for holes, rocks, roots and other hidden hazards
in the terrain. Keep away from any dropoff. Beware
of overhead obstructions (low limbs, etc.), underground
obstacles (sprinklers, pipes, tree roots, etc.). Cautiously
enter a new area. Be alert for hidden hazards.
17. Use care when loading or unloading the machine onto
a trailer or truck.
8. Disengage power to cutter deck before backing up.
Do not mow in reverse unless absolutely necessary
and then only after observation of the entire area behind
the mower.
18. Use care when approaching blind corners, shrubs, trees,
or other objects that may obscure vision.
2.5 ROLL OVER PROTECTION SYSTEM
9. DO NOT turn sharply. Use care when backing up.
WARNING:
10. Disengage power to cutter deck before crossing roads,
walks or gravel drives.
Seat belt must be securely fastened during
operation. Failure to do so could cause
serious injury or loss of life.
11. Mow only in daylight or good artificial light.
12. NEVER raise the deck with the blades engaged.
6
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Section 2
This mower has been designed for good traction and
stability under normal mowing conditions. However, caution
must be used when traveling on slopes, especially when
the grass is wet. Do not mow on wet grass. Wet grass
reduces traction and steering control.
INSPECT BUCKLE
& LATCH
INSPECT WEBBING
Any or all parts of the Roll Over Protection System MUST
NOT be removed. Failure to adhere to this guideline could
result in injury or death.
Figure 2-1 Seat Belt Inspection
The potential exposure of this seat belt to severe
enviromental conditions make it crucial to inspect the seat
belt system regularly.
WARNING:
Reduce speed when turning, operating on slopes,
slick or wet surfaces. Allow extra distance to stop.
It is recommended that the seat belt be inspected on a
daily basis for signs of damage. Any seat belt system that
shows cuts, fraying, extreme or unusual wear, significant
discoloration due to UV exposure, dirt or stiffness, abrasion
to the seat belt webbing, or damage to the buckle, latch
plate, hardware or any other obvious problem should be
replaced immediately.
Stay off of slopes too steep for safe operation. To
check a slope, attemp to back up it (with the cutter
deck down). If the machine can not back up the
slope without the wheels slipping, do not operate
the machine on this slope.
ALWAYS travel up or down the slope whenever
possible. Never across the slope.
WARNING:
Failure to properly inspect and maintain the
seat belt can cause serious injury or loss of
life.
DO NOT mow near drop-offs, ditches or
embankments. The machine could suddenly roll
over if a wheel goes over the edge or if the edge
caves in.
1. Check the full length of the seat belt webbing for cuts,
wear, fraying, dirt and stiffness. See Figure 2-1.
Operate the machine smoothly, no sudden turns,
starts or stops on a slope.
2. Check the seat belt webbing in areas exposed to ultra
violet rays from the sun or extreme dust or dirt. If the
original color of the webbing in these areas is extremely
faded and/or is packed with dirt, the physical strength
of this webbing may have deteriorated. If this condition
exists, replace the seat belt system.
NEVER tow on slopes. The weight of the towed
equipment may cause loss of traction and loss of
control.
DO NOT permit untrained personnel to operate
the machine.
3. Check the buckle and latch for proper operation and
determine if the latch plate is exessively worn,
deformed, or of the buckle is damaged or cracked.
See Figure 2-1.
7
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Section 2
7. Park the machine on level ground and engage the
parking brake.
8. NEVER allow untrained personnel to service the
machine.
9. Use care when checking blades. Wrap the blade(s)
or wear gloves and use caution when servicing
blades. Only replace blades. NEVER straighten or
weld blades.
10. Keep all parts in good working condition. Replace all
worn or damaged decals.
Figure 2-2. STT-BSD With Roll Over
Protection System.
11. Use jack stands to support components when
required.
2.6 MAINTENANCE CONSIDERATIONS &
STORAGE
12. Carefully release pressure from components with
stored energy.
1. Never make adjustments to the machine with the
engine running unless specifically instructed to do so.
If the engine is running, keep hands, feet, and
clothing away from moving parts.
WARNING:
Hydraulic fluid is under high pressure. Keep
body and hands away from pinholes or nozzles
that eject hydraulic fluid under high pressure.
If you need service on your hydraulic system,
please see your authorized Scag dealer. If
hydraulic fluid is injected into the skin, it must
be surgically removed within a few hours by a
doctor or gangrene may result.
2. Disengage drives, lower implement, set parking
brake, stop engine and remove key or disconnect
spark plug wire to prevent accidental starting of the
engine when servicing or adjusting the machine.
Wait for all movement to stop before adjusting,
cleaning or repairing.
13. Let the engine cool before storing.
3. Disconnect battery or remove spark plug wire before
making any repairs. Disconnect the negative
terminal first and the positive last. Reconnect the
positive first and the negative last.
14. DO NOT store the machine near an open flame.
15. Shut off fuel while storing or transporting.
16. DO NOT store fuel near flames or drain indoors.
4. Keep all nuts, bolts and screws tight, to ensure the
machine is in safe working condition. Check blade
mounting bolts frequently to be sure they are tight.
17. Charge batteries in an open well ventilated area,
away from spark and flames. Unplug charger before
connecting or disconnecting from battery. Wear
protective clothing and use insulated tools.
5. Do not change the engine governor settings or
overspeed the engine. See the engine operator's
manual for information on engine settings.
6. To reduce fire hazard, keep the cutting units, drives
muffler and engine free of grass, leaves, excessive
grease, oil and dirt.
8
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Section 2
2.7 SAFETY AND INSTRUCTIONAL DECALS
WARNING
INSTALL BELT COVER BEFORE
OPERATING MACHINE
READ OPERATOR'S MANUAL
481039
481039
FORWARD
482285
R
F
REVERSE
481568
482286
482290
482834
483046
482710
390S0150E- Rev 1
9
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Section 3
SPECIFICATIONS
SCAG “SABRE TOOTH TIGER” ZERO-TURN RIDER
MODEL: STT– 31BSD
ENGINE
GeneralType:
Brand:
HeavyDutyIndustrial/CommercialTurboChargedDiesel
Briggs Daihatsu Vanguard Liquid Cooled 31 HP
Model:
DM950D
Horsepower:
Type:
31HP@3600RPM
water cooled 4 cycle, overhead valve, 3 cylinder, diesel engine
Displacement:
Cylinders:
Governor:
952cc
3 inline sleeves
High-speed flyweight governor, runs faster than engine crankshaft, provides precision
speed governing and a steady low idle, 3600 rpm (±100 rpm), idle set at 1700 rpm
Canister type air filter system.
Singleexhaustcanistermuffler
Distributor injection pump
AirIntakeGroup:
ExhaustGroup:
FuelInjection:
OilPumpGroup:
Positive displacement Gerotor™ oil pump with remote oil filter, capacity 3.2 U.S. quarts
(3.0ltrs)withoilfilter
ValveGroup:
Overhead
Electrical/ChargingSystem:
12 volt battery with alternator, solid state ignition with key start, 40 amp regulated
charging system, solenoid shift type starter
ENGINE DECK
FuelTank:
10 gallon (38.0 litres) seamless polyethylene tank with fuel gauge cap
DriveWheels/Tires:
ParkingBrake:
Frame:
24x12-12 four-ply pneumatic tubeless, radius edge, offset rims to improve operator’s view
Lever operated interlocked parking brake prevents operation with parking brake engaged
Compact tractor frame with structural steel tubing construction
DRIVE SYSTEM
Type:
Hydro drive with two variable displacement pumps and two cast iron motors for
independent control of each drive wheel
HydroPumps:
Two Hydro-Gear Model BDP 21L pumps with dump valves for movement without running
engine
Drive Wheel Motors:
Two 23 cubic inch cast-iron high torque wheel motors
Self-adjusting, self-tightening, sealed bearings
6 qt. capacity nylon fluid reservoir, uses SAE 20W50 fluid and 10 micron filter
Twin lever fingertip steering control with gas shock dampeners for smooth, responsive
control to each wheel
TransmissionBeltIdler:
HydroFluidCoolingGroup:
Steering/TravelControl:
Axles:
1-1/4" heavy-duty, tapered motor shafts
Wire Harness:
SafetyGroup:
14 gauge wire
Seat actuated engine kill, neutral interlock, mower engagement (BBC) switch, parking
brake
InstrumentPanel:
Voltmeter, water temperature gauge, oil pressure gauge, key switch, throttle, fuses, BBC
switch (hourmeter located at rear of machine), glow plug indicator, water separator
indicator
Forward Ground Speed Range:
Reverse Ground Speed Range:
0to10.5mph
0 to 5.0 mph
-NOTE-
The machine will travel at 10.5 mph for
transport purposes. For best cutting
performance the forward travel speed
should be adjusted depending on the
cutting conditions.
Date of Issue: October, 2004
Specifications Subject To Change Without Notice
10
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Section 3
SPECIFICATIONS (CON'T)
SCAG “SABRE TOOTH TIGER” ZERO-TURN RIDER
MODEL: STT– 31BSD
CUTTER DECK
Type:
SMST-72A ("Advantage") & SMST-61A ("Advantage") - Floating, adjustable anti-
scalping, hybrid design combines out-front and belly-mount designs. "Advantage" -
special extended front edge allows Bahia or other tough grasses to enter the deck
standing upright for a clean cutting.
Construction:
True Cutting Width:
Cutting Height Adjustment:
10-gauge steel top reinforced with 7 gauge support plate, deck skirt is 7 gauge steel
72"cutterdeck=71.5 inches(181.6cm);61"cutterdeck=61.0"(155.0cm)
Foot-operated pedal adjustment from operator’s seat,
1" to 6" in 1/4" increments
CutterBlades:
72" = Three (3) 24" blades; 61" = Three (3) 21" blades
CutterDeckDrive:
BladeEngagement:
Discharge Opening:
Caster Wheels:
Spindles:
Drive shaft to 90 degree gear box
Electric blade engagement clutch with control panel knob
Extra wide 11.5" discharge opening with spring loaded discharge chute
13 x 5 x 6 caster wheels with tapered roller bearing pivots
Heavy duty 1-1/8" top dimension spindle shaft, cast housing, taper roller bearing, low
maintenance with top access grease fitting and grease overfill relief poppet
Split Steel with easily removed taper hubs
SpindlePulleys:
CutterDeckBelts:
Anti-ScalpRollers:
B-section with Kevlar cord
Two front, two rear 4-1/2" adjustable, two rear 12" fixed
ADDITIONAL SPECIFICATIONS
Seat:
Thick padded seat cushions with special springs. Padded arm rests, lever adjustment
forward and back.
APPROXIMATE DIMENSIONS
72"
92.0"
61"
89.5"
Length:
TrackingWidth:
Width:
56.0”
83.0”
56.0"
73.0"
Width (with discharge chute up):
Height:
73.0”
43.0”
63.0"
43.0"
Turning Radius:
Weight:
zero radius turning
1635lbs.
zero radious turning
1600lbs.
PRODUCTIVITY
The following chart will aid you in determining how many acres your Scag mower will cut per day.
The chart is an estimate based on 8 hours per day cutting time at 7 MPH with an allowance for overlap and turns calculated in.
Cutting Width:
Acres Per Day:
61" 72"
27 32
Date of Issue: October, 2004
Specifications Subject To Change Without Notice
11
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Section 4
OPERATING INSTRUCTIONS
2. Water Seperator Indicator (Figure 4-1). Amber
indicator turns on when the Water Seperator is full
and needs to be cleaned out.
CAUTION:
Do not attempt to operate this mower unless you
have read this manual. Learn the location and
purpose of all controls and instruments before you
operate this mower.
3. Mower Deck Switch (Figure 4-1). Used to
engage and disengage the mower drive system.
Pulling up on the switch will engage the deck drive.
Pushing down on the switch will disengage the deck
drive.
4.1 CONTROLS AND INSTRUMENT
IDENTIFICATION
4. Glow Plug Indicator (Figure 4-1). Yellow
indicator turns off when the glow plugs have been
properly heated after the ignition switch is turned on.
Before operating the mower, familiarize yourself with all
mower and engine controls. Knowing the location,
function and operation of these controls is important for
safe and efficient operation of the mower.
5. Engine Throttle Control (Figure 4-1). Used to
control the engine speed. Pushing the lever forward
increases engine speed. Pulling the lever back
1. Ignition Switch (Figure 4-1). The ignition switch
is used to start the engine and has three positions;
OFF, ON, and START.
decreases engine speed. Full back position is the
IDLE position. Full forward is the cutting position.
DECK LIFT
RIGHT STEERING
CONTROL
LEFT STEERING
CONTROL
CUTTING HEIGHT
ADJUSTMENT
PARKING BRAKE
CONTROL
WATER TEMPERATURE
MOWER DECK SWITCH
DECK RELEASE
WATER SEPARATOR
INDICATOR
OIL PRESSURE
SEAT BELT
GLOW PLUG INDICATOR
ENGINE
THROTTLE
CONTROL
IGNITION SWITCH
FUEL GAUGE
FUSES
VOLTMETER
HOURMETER
DUMP VALVE
BSD2005CONTROLS
Figure 4-1 Controls and Instruments
12
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Section 4
DUMP VALVE
CONTROL
6. Voltmeter (Figure 4-1). Indicates the condition of
the charging system. When the engine is running, in
normal operating conditions, the needle should be in
the 12 to 14 volt range.
7. Oil Pressure (Figure 4-1). Indicates engine oil
pressure. Reference the engine operator's manual
for further information.
8. Hourmeter (Figure 4-1). Indicates the number of
hours the engine has been operated. It operates
whenever the engine is running. It can be used to
keep track of maintenance intervals and the amount
of time required to perform various tasks.
390S0141BSG
Figure 4-2 DumpValve Control
16. Cutting Height Adjustment (Figure 4-1). Used
to set the cutter deck at the desired cutting height.
9. Fuse Holders (Figure 4-1). There are two 20-
amp fuses and one 40-amp fuse that protect the
mower’s electrical system. To replace fuses, pull
fuse out of the socket and install a new fuse.
17. Deck Release Lever (Figure 4-1). Used to lock
the cutter deck in the transport position. Push the
foot pedal forward and lift up on the release lever to
release the cutter deck for normal mowing.
10. Left Steering Control (Figure 4-1). Used to
control the mower's left wheel when traveling
forward or reverse.
18. Temperature Gauge (Figure 4-1). Indicates the
operating temperature of the engine.
11. Right Steering Control (Figure 4-1). Used to
control the mower's right wheel when traveling
forward or reverse.
19. Seat Belt (Figure 4-1). Used to secure the
operator. Seat belt must be worn at all times during
operation.
12. Parking Brake Control (Figure 4-1). Used to
engage and disengage the parking brakes. Pull the
lever back to engage the parking brakes. Push the
lever forward to disengage the parking brakes.
4.2 SAFETY INTERLOCK SYSTEM
The mower is equipped with a safety interlock system
that prevents the engine from starting unless the deck
drive is disengaged, the parking brake is engaged, the
steering control levers are in the neutral position and the
operator is in the seat. The interlock system shuts off
the engine if the operator leaves the seat with the
steering control levers not in the neutral position and/or
the cutter blades engaged and the parking brake not
engaged.
13. Fuel Tank Gauge (Figure 4-1). Indicates the
amount of fuel in the fuel tank.
14. Dump Valve Control Levers (Figure 4-2).
Located on the hydraulic pumps, used to “free-
wheel” the mower. Rotating the levers clockwise
until they stop allows the unit to move under
hydraulic power. The levers must be in this position
and torqued to 10ft/lbs during operation of the
mower. Rotating the levers counter-clockwise
allows the mower to be moved by hand (free-
wheeling).
WARNING:
Never operate the mower with the interlock
system disconnected or malfunctioning. Do
not disengage or bypass any switch; injury to
yourself and others or property damage could
result.
15. Deck Lift Foot Lever (Figure 4-1). Used to raise
and lower the cutter deck.
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Section 4
6. Move the engine throttle control to about half engine
speed.
4.3 INITIAL RUN-IN PROCEDURES (First
Day of Use or Approximately 10 Hours)
7. Turn the ignition key to the on position until the
yellow indicator for the glow plugs goes out. Then
turn the ignition key to the START position and
release the key as soon as the engine starts. Do not
hold the key in the START position for more than 15
seconds at a time. Allow at least 60 seconds
between each cranking attempt to prevent
overheating of the starter motor. Prolonged cranking
can damage the starter motor and shorten battery
life.
1. Check all belts for proper alignment and wear at 2, 4
and 8 hours.
2. Change the engine oil and oil filter after the first 5
hours of operation. (See Section 7.4.)
3. Check hydraulic oil level in reservoir. (See Section
7.3.)
4. Check for loose hardware. Tighten as needed.
8. Allow engine to warm before operating the mower.
4.5 GROUND TRAVEL AND STEERING
-IMPORTANT-
5. Check interlock system for proper operation. (See
Section 4.2.)
6. Check tire pressure. Adjust pressure if necessary.
(See Section 7.10)
If you are not familiar with the operation of a
machine with lever steering and/or hydrostatic
transmissions, the steering and ground speed
operations should be learned and practiced in
an open area, away from buildings, fences, or
obstructions. Practice until you are comfortable
with the handling of the machine before
4.4 STARTING THE ENGINE
CAUTION:
DO NOT USE STARTING FLUIDS. Use of starting
fluids in the air intake system may be potentially
explosive or cause a “runaway” engine condition
that could result in engine damage and/or personal
injury.
attempting to mow. Learn the operation on flat
ground before operating on slopes.
-IMPORTANT-
Start practicing with a slow engine speed and
slow forward travel.
1. Before initial start or after running out of fuel, you
must prime the fuel pump located on the right side of
the engine. Pump the primer pump until it can no
longer be depressed.
Learn to feather the steering controls to obtain
a smooth operating action.
Practice operating the mower until you are
comfortable with the controls before proceeding
to mow.
2. Be sure the fuel shutoff valve, located behind the
operator's seat, is completely open. (See Section 7.5
Page 30)
Forward Travel
3. Sit in the operator’s seat, fasten seat belt and place
the steering control levers in the neutral position.
To travel forward with the mower, disengage the parking
brake and slowly push the steering control levers forward
an equal distance. The further the steering control levers
are pushed forward, the greater the forward speed will
be. To increase the speed, push the steering control
levers further forward and to decrease the speed, pull the
steering control levers back.
4. Engage the parking brake.
5. Place the PTO switch in the disengaged position.
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Section 4
To stop the forward travel, pull the steering control levers
back to the neutral position.
-NOTE-
The mower may not travel straight in reverse.
Slight adjustments may need to be made using
the steering controls.
To steer the mower left while traveling forward, pull the
left steering lever back. The further the lever is pulled
back, the quicker the mower will turn left.
To steer left while traveling in reverse, allow the left
steering control lever to move forward. The further the
control is allowed to move forward, the quicker the
mower will turn left.
To steer the mower right while traveling forward, pull the
right steering control lever back. The further the lever is
pulled back, the quicker the mower will turn right.
To steer right while traveling in reverse, allow the right
steering control lever to move forward. The further the
control is allowed to move forward, the quicker the
mower will turn right.
-NOTE-
Smooth operation of the steering levers will
produce smooth mower operation. While
learning the operation of the steering controls,
keep the travel speed low.
To stop the reverse travel, allow the steering control
levers to return to the neutral position. If the mower is to
be parked, engage the parking brake.
-IMPORTANT-
Do not travel forward over a curb. The mower
will hang up on the curb. Raise the deck and
travel backwards over the curb at a 45 degree
angle. (see section 4.13 on Page 16 for cutter
deck raising instructions)
4.6 ENGAGING THE DECK DRIVE (CUTTER
BLADES)
1. Set the throttle at about 3/4 speed. Do not attempt to
engage the deck drive at high speed as this shortens
the electric clutch life — use only moderate engine
speed when engaging the deck drive.
Reverse Travel
CAUTION:
2. Engage the deck drive by pulling out on the yellow
switch, located on the instrument panel, (Figure 4-3)
to the engage position.
Disengage power to the mower before backing up.
Do not mow in reverse unless absolutely necessary
and then only after observation of the entire area
behind the mower.
CAUTION:
Before backing up, observe the rear for persons and
obstructions. Clear the area before backing up.
Possible injury or property damage could occur.
PULL UP TO ENGAGE
PUSH DOWN TO DISENGAGE
STT99CES
Figure 4-3 Cutter Engage Switch
To travel in reverse, pull both handles back. Keep the
travel speed low while traveling in reverse.
-NOTE-
A squealing noise may be heard when
engaging or disengaging the deck drive. It is
caused by the electric clutch plates meshing
as the mower comes up to speed.
15
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Section 4
3. To disengage the deck drive, push the switch in to
the disengage position.
3. Keep tires properly inflated.
4.8 PARKING THE MOWER
4. Always operate the engine at full throttle to properly
maintain cutting speed. If the engine starts to lug
down, reduce the forward speed and allow the
engine to operate at maximum RPM.
1. Stop on level ground and place the steering control
levers in the neutral position.
5. To properly burnish the electric PTO clutch brake,
follow the following steps.
2. Disengage the cutter blades
3. Slow the engine to idle speed.
4. Engage the parking brake.
A. Start and run the engine at approximately 3/4
throttle.
B. Engage and disengage the PTO
approximately 25 times, waiting for 10
seconds between each on/off cycle.
5. Turn the ignition key to the OFF position and remove
the key.
-NOTE-
4.9 AFTER OPERATION
Burnishing the electric clutch improves
longevity and performance and should be done
on every new machine and after a clutch
replacement. The burnishing procedure should
not be performed while cutting grass.
1. Wash the entire mower after each use. Do not use
high pressure spray or direct the spray onto electrical
components.
-IMPORTANT-
4.7 HILLSIDE OPERATION
Do not wash a hot or running engine. Cold
water will damage the engine. Use compressed
air to clean the engine if it is hot.
WARNING:
2. Keep the entire mower clean to inhibit serious heat
damage to the engine or hydraulic oil circuit.
DO NOT operate on steep slopes. To check a slope,
attempt to back up it (with the cutter deck down).
If the machine can back up the slope without the
wheels slipping, reduce speed and use extreme
caution. ALWAYS FOLLOW OSHA APPROVED
OPERATION.
3. Check the drive belts for proper alignment and any
signs of wear. Correct and adjust if necessary.
1. The mower has been designed for good traction and
stability under normal mowing conditions. However,
caution must be used when traveling on slopes,
especially when the grass is wet. Wet grass reduces
traction and steering control. The Roll Over
Protection System is standard equipment for this
machine. See section 2.5, page 6 of this manual for
further details.
To avoid injury from burns, allow the mower to cool
before removing the fuel tank cap and refueling.
4. After the mower has cooled down, fill the fuel tank
with fresh, clean fuel with a minimum cetane rating
of 40 at the end of every day of operation.
2. To prevent tipping or loss of control, start and stop
smoothly, avoid unnecessary turns and travel at
reduced speed.
5. Check the tire pressure. Adjust pressure if
necessary.
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Section 4
3. Cut grass when it is dry and not too tall. Do not cut
grass too short (cut off 1/3 or less of existing grass
for best appearance). Mow frequently.
4.10 REMOVING CLOGGED MATERIAL
4. Keep mower and discharge chute clean.
ROTATING BLADES
NEVER PUTYOUR HANDS INTOTHE DISCHARGE
CHUTE FOR ANY REASON! Shut off the engine
and remove the key and only then use a stick or
similar object to remove material if clogging has
occurred.
5. When mowing wet or tall grass, mow the grass twice.
Raise the mower to the highest setting for the first
pass and then make a second pass to the desired
height.
6. Use a slow travel speed for trimming purposes.
1. If the discharge chute becomes clogged, shut off the
engine and remove the ignition key. Using a stick or
similar item, dislodge the clogged material. Then
resume normal mowing.
7. Operate the engine at full throttle for best cutting.
Mowing with a lower RPM causes the mower to tear
the grass. The engine is designed to be operated at
full speed.
4.11 MOVING MOWER WITH ENGINE
STOPPED
8. Use the alternate stripe pattern for best lawn
appearance. Vary the direction of the stripe each
time the grass is mowed to avoid wear patterns in the
grass.
To “free-wheel” or move the mower around without the
engine running, place the dump valve levers in the FREE-
WHEEL position (Figure 4-2). Disengage the parking
brake and move the mower by hand. The dump valve
levers must be returned to the DRIVE position and
torqued to 10ft/lbs to drive the mower.
DUMP VALVE
CONTROL
4.12 RECOMMENDATIONS FOR MOWING
1. Do not mow with dull blades. A dull blade will tear
grass, resulting in poor lawn appearance and reduced
mowing power.
2. The discharge chute must not be removed and must
be kept in the lowest position to deflect grass
clippings and thrown objects downward. Direct the
side discharge away from sidewalks or streets to
minimize cleanup of clippings. When mowing close
to obstacles, direct the discharge away from the
obstacles to reduce the chance of property damage by
thrown objects.
390S0141BSG
Figure 4-2 DumpValve Control
WARNING
DO NOT OPERATE WITHOUT DISCHARGE CHUTE, MULCHING
KIT, OR ENTIRE GRASS CATCHER INSTALLED
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Section 4
DECK RELEASE
LEVER
4.13 ADJUSTING CUTTING HEIGHT
The mower deck can be adjusted from a height of 1-inch
to 6 inches at 1/4-inch intervals. To adjust the cutting
height:
CU
HE
TTING
IGH
6
5.5
T
5
4.5
4
3.5
3
2.5
2
1.5
1
48
1
54
3
1. Push the cutting height adjustment foot pedal all the
way forward using your right foot until it locks in
place. (Figure 4-6).
2. Insert the lanyard pin into the cutting height index at
the desired cutting height. Push forward on the deck
lift foot lever, hold in place and lift up on the deck
release lever, (Figure 4-7). Slowly release the foot
pedal. A deck height decal is located on the cutting
height index as an aid in adjusting the deck to the
desired height. (Figure 4-6).
390S0151-1
Figure 4-7 Deck Release Lever
LANYARD
PIN
4 8 1 5 4 3
1
1 . 5
2
2 . 5
3
3 . 5
4
4 . 5
5
5 . 5
T
6
G
H
N
G
I
I
T
E
C
T
H
U
390S0140-1
Figure 4-6 Adjusting Cutting Height
HEIGHT ADJUSTMENT PEDAL
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Section 5
TROUBLESHOOTING CUTTING CONDITIONS
CAUSE
CURE
CONDITION
Stringers - Occasional
Blades of Uncut
Grass
Low engine RPM
Run engine at full RPM
Slow speed to adjust for conditions
Cut grass after it has dried out
Sharpen blades
Ground speed too fast
Wet grass
Dull blades, incorrect sharpening
Deck plugged, grass accumulation
Beltsslipping
Clean underside of deck
Adjust belt tension
Width of Deck
SGB020
Streaking - Strips of
Uncut Grass in Cutting
Path
Dull, worn blades
Incorrect blade sharpening
Low engine RPM
Beltslipping
Sharpen blades
Sharpen blades
Run engine at full RPM
Adjust belt tension
Deck plugged, grass accumulation
Ground speed too fast
Wet grass
Clean underside of deck
Slow speed to adjust for conditions
Cut grass after it has dried out
Replace blades
Width of Deck
Bent blades
SGB018
Streaking - Strips of
Uncut Grass Between
Cutting Paths
Notenoughoverlapping
between rows
Increase the overlap of each
pass
Width
of
Deck
Width
of
Deck
SGB019
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Section 5
TROUBLESHOOTING (CONT'D)
CONDITION
CAUSE
CURE
Uneven Cut on Flat
Ground - Wavy
High-Low
Lift worn from blade
Blade upside down
Replace blade
Mount with cutting edge toward
ground
Appearance,
Scalloped Cut, or
Rough Contour
Deck plugged, grass accumulation
Too much blade angle (deck pitch)
Deck mounted improperly
Bent spindle area
Clean underside of deck
Adjust pitch and level
See your authorized SCAG dealer
See your authorized SCAG dealer
Sharpen blade
Dullblade
Width of Deck
SGB020
Uneven Cut on
Uneven Ground -
Wavy Appearance,
Uneven ground
May need to reduce ground speed,
raise cutting height, and/or change
direction of cut
High-Low Scalloped
Cut, or Rough Contour
Width of Deck
SGB021
Sloping Ridge Across
Width of Cutting Path
Tire pressures not equal
Wheels uneven
Check and adjust tire pressure
Check and adjust tire pressure
See your authorized SCAG dealer
Check for level and correct
Deck mounted incorrectly
Deck not level side-to side
Width of Deck
SGB023
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Section 5
TROUBLESHOOTING (CONT'D)
CAUSE
CURE
CONDITION
Scalping - Blades
Hitting Dirt or
Cutting Very Close to
the Ground
Low tire pressures
Ground speed too fast
Cuttingtoolow
Check and adjust pressures
Slow speed to adjust for conditions
May need to reduce ground speed,
raise cutting height, change direction
of cut, and/or change pitch and level
Rough terrain
May need to reduce ground speed,
raise cutting height, and/or change
direction of cut
Ground speed too fast
Wet grass
Slow speed to adjust for conditions
Cut grass after it has dried out
Width of Deck
SGB022
Step Cut -Ridge
in Center of
Cutting path
Blades not mounted evenly
Bent blade
Adjust pitch and level
Replace blade
Internalspindlefailure
See your authorized SCAG dealer
See your authorized SCAG dealer
Mountingofspindleincorrect
Width of Deck
SGB024
Slope Cut - Sloping
Ridges Across Width
of Cutting Path
Bent spindle mounting area
Internalspindlefailure
Bent deck housing
See your authorized SCAG dealer
See your authorized SCAG dealer
See your authorized SCAG dealer
Width of Deck
SGB025
21
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Section 6
7. Repeat steps 4-6 on the RH side of the machine.
ADJUSTMENTS
6.1 PARKING BRAKE ADJUSTMENT
8. Replace the drive wheels and test the brake.
-NOTE-
WARNING:
Do not operate the mower if the parking brake is
not operable. Possible severe injury could
result.
If this procedure does not achieve proper brake
adjustment, please contact your authorized Scag
dealer.
LOOSEN HERE
The parking brake linkage should be adjusted whenever
the parking brake lever is placed in the “ENGAGE”
position and the parking brake will not prevent the mower
from moving. If the following procedures do not allow
you to engage the parking brake properly, contact your
Scag dealer for further brake adjustments.
1. Position a floor jack under the rear of the machine.
Raise the machine and support it to prevent it from
falling. Block the caster wheels to prevent the
machine from moving. Remove the drive wheels.
390S0152-1
2" to 2-1/4" Clearance
Figure 6-1. Brake Adjustment
2. With the brake lever in the disengaged position, check
the distance between the top of the frame tube and
the bottom of the brake handle. The distance should
be 2" to 2-1/4" (See Figure 6-1).
3. If the distance is not at the specified measurement,
adjust by loosening the jam nuts at both ends of the
brake control rod and turning the rod until the proper
distance is achieved. (See Figure 6-1). Tighten the
jam nuts.
LOOSEN
HERE
1/8"
4. With the brake in the engaged position, check the
distance between the lower nut on the brake actuator
rod and the brake actuator lever on the LH side of the
machine. The distance should be 1/8" (See Figure 6-
2).
390S0153-1
Figure 6-2. Brake Rod Adjustment
5. If the distance is not at the specified measurement,
loosen the jam nut at the clevis on the top of the
brake actuator rod (See Figure 6-2).
6.2 TRAVEL ADJUSTMENTS
Neutral or tracking adjustments will need to be made if:
6. Turn the bolt at the bottom of the brake actuator lever
until the 1/8" measurement is achieved and tighten the
jam nut at the clevis on the brake actuator rod. (See
Figure 6-2).
A. The steering control levers are in the neutral
position and the machine creeps forward or
backward. (Neutral Adjustment, See Page 21).
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Section 6
B. The steering control levers are in the full forward
4. Adjust the RH wheel by loosening the jam nuts on
the steering control rod and turning the rod until the
drive wheel turns in the forward direction. Turn the
rod back until the drive wheel stops moving. Turn
the rod an additional 1/2 turn. (See Figure 6-3).
position and the mower pulls to one side or the
other when traveling in a forward direction.
(Tracking Adjustment, See Page 23).
Neutral Adjustment
5. Tighten the jam nuts and repeat for the LH wheel.
(See Figure 6-4).
1. Be sure the dump valve levers are in the run position
and the steering control levers are in the neutral lock
position.
6. Actuate the steering control levers forward and
reverse several times and return them to the neutral
position.
2. With an operator in the seat, start the engine and
disengage the parking brake.
7. Check that the drive wheels remained in neutral and
readjust if necessary.
3. Run the engine at full operating speed and check if the
machine creeps forward or backwards.
8. Check that the steering control levers hit the stop
before the pumps reach full stroke. Adjust as needed.
CONTROL
ROD
LOOSEN
HERE
LOOSEN
HERE
390S0147-1
390S0149-1
LOOSEN HERE
LOOSEN HERE
ADJUST HERE
2KBSGLHCRA
ADJUST HERE
2KBSGRHCRA
Figure 6-3. RH Steering Control Rod Adjustment
Figure 6-4. LH Steering Control Rod Adjustment
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Section 6
Tracking Adjustment
A. Stop the machine and place the steering control
levers in the neutral position. Loosen the lock
nuts securing the ball joints at each end of the
RH steering control rod. Rotate the control rod
to lengthen the rod and tighten the lock nuts.
This will cause the control rod to stroke the RH
pump less, slowing down the RH wheel. (See
Figure 6-3)
CAUTION:
Stop the engine and remove the key from the
ignition before making any adjustments. Wait for
all moving parts to come to a complete stop
before beginning work.
-NOTE-
If after making the adjustment as outlined in step
2A, the machine creeps forward or backward, the
neutral adjustment must be made as described on
page 21.
CAUTION:
The engine and drive unit can get hot during
operation causing burn injuries. Allow engine
and drive components to cool before making any
adjustments.
6.3 THROTTLE CONTROL
These adjustments must be performed by your Scag
dealer to ensure proper and efficient running of the
engine. Should either need adjustment, contact your
authorized Scag service center.
-NOTE-
Before proceeding with this adjustment, be sure
that the caster wheels turn freely and that the tire
pressure in the drive wheels is correct. If the tire
pressure is not correct, the machine will pull to
the side with the lower pressure.
6.4 BELT ADJUSTMENT
1. If at full speed the mower pulls right, it is an
indication that the left wheel is turning faster than the
right wheel. To adjust this condition, proceed as
follows:
WARNING:
Before removing any guards, shut the
engine off and remove the ignition key.
A. Stop the machine and place the steering control
levers in the neutral position. Loosen the lock
nuts securing the ball joints at each end of the
LH steering control rod. Rotate the control rod
to lengthen the rod and tighten the lock nuts.
This will cause the control rod to stroke the LH
pump less, slowing down the LH wheel. (See
Figure 6-4)
All drive belts and cutter deck belts are spring-loaded
and self-tensioning. The belts should be checked
periodically for proper alignment and wear.
6.5 BELT ALIGNMENT
Belt alignment is important for proper performance of
your Scag mower. If you experience frequent belt wear
or breakage, see your authorized Scag service center for
belt adjustment.
-NOTE-
If after making the adjustment as outlined in step
1A, the machine creeps forward or backward, the
neutral adjustment must be made as described on
page 21.
2. If at full speed the mower pulls left, it is an indication
that the right wheel is turning faster than the left
wheel. To adjust this condition, proceed as follows:
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Section 6
3. Tighten the elastic stop nut to secure the cutter deck
in the proper position.
6.6 CUTTER DECK ADJUSTMENTS
Cutter deck level, pitch and height are set at the factory.
However, if these adjustments should ever need to be
made, the following procedures will aid in obtaining the
proper cutter deck adjustment.
Cutter Deck Pitch
The pitch of the cutter deck should be equal between the
front and rear of the cutter deck for proper cutting
performance. To check for proper deck pitch, be sure
that the mower is on a flat, level surface and the tires are
properly inflated. Use the following procedures,
however, measure from the top of the cutter deck rather
than the bottom edge. Lay a straight edged object on the
top of the Advantage cutter deck, protruding towards the
front of the machine, when measuring the front height.
-NOTE-
Before proceeding with the cutter deck
adjustments, be sure that all tires are properly
inflated.
Cutter Deck Level
The cutter deck should be level from side-to-side for
proper cutting performance. To check for level, be sure
that the mower is on a flat, level surface, the tires are
properly inflated and the cutter deck is set at the most
common cutting height that you will use. On the RH side
of the machine, check the distance from the bottom of
the cutter deck to the floor. Next check the distance
from the bottom of the cutter deck to the floor on the LH
side of the machine. Both measurements should be the
same. If the two measurements are different, the cutter
deck level must be adjusted as follows:
Check the distance from the top of the cutter deck to the
floor at the rear RH side of the cutter deck directly
behind the cutter deck hanging chains. Next check the
distance from the top of the cutter deck to the floor at
the front RH side of the cutter deck directly in front of
the cutter deck hanging chains. The measurement at the
front of the cutter deck should be equal to the
measurement at the rear of the deck. Make these
measurements at the LH side of the cutter deck also. If
the measurement at the front of the deck is not equal to
the rear, the cutter deck pitch must be adjusted as
follows:
1. On the front LH side of the cutter deck locate the
cutter deck adjusting bolt. (See Figure 6-5)
1. Loosen the jam nuts on both adjusting rods.
(See Figure 6-5)
JAM NUT
ADJUST HERE
2. Using a wrench on the spring compression nut (See
Figure 6-5) turn the adjusting rods until the 1/4"
forward pitch is obtained on both the RH and the LH
side of the cutter deck. Tighten both jam nuts.
-NOTE-
To prevent the cutter deck from teetering, all four
cutter deck hanging chains must have tension on
them. If all four chains do not have tension on
them and the deck teeters, you must readjust the
cutter deck as outlined in the procedures above.
390S0174-1
Figure 6-5. Cutter Deck Adjustment
2. Loosen the elastic stop nut and move the bolt up or
down in the slot to adjust the cutter deck until the
distance from the bottom of the cutter deck to the
floor is the same as the measurement on the RH side
of the machine.
25
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Section 6
Cutter Deck Height
3. Check the cutter deck cutting height by placing the
lanyard pin in the 3" position on the cutting height
index. Release the deck from the transport positon
and allow the deck to move to the 3" cutting height
position.
The cutter deck height adjustment is made to ensure that
the cutter deck is cutting at the height indicated on the
cutting height index gauge. To check for proper deck
height, be sure that the mower is on a flat, level surface
and the tires are properly inflated.
4. Check the measurement from the floor to the cutter
blade tip. If the measurement is not at 3", an
adjustment can be made using the deck height
control rod. (See Figure 6-6)
1. Place the cutter deck in the transport position.
Loosen the jam nuts on both ends of the deck height
control rod. (See Figure 6-6)
LANYARD PIN
3
4
5
1
8
4
1
-NOTE-
1 . 5
2
2 . 5
3
3 . 5
4
CONTROL ROD
4 . 5
If an adjustment has to be made, be sure that the
cutter deck can easily be locked into the
transport position.
5
5 . 5
T
6
G
H
N
I
I G
T
E
T
H
U
C
Custom-Cut Baffle Adjustment
LOOSEN
HERE
The Custom-Cut Baffle is designed to deliver optimum
airflow and superior cutting performance in any type of
grass. The Custom-Cut Baffle can be raised or lowered
to precisely tailor the deck's performance for the type of
grass being cut. The baffle can be set in three (3)
different positions for optimum performance.
HEIGHT ADJUSTMENT PEDAL
390S014A
Figure 6-6. Cutter Deck Height Adjustment
2. Turn the control rod (See Figure 6-6) until there is a
1/4" space between the rear deck stop and the top of
the cutter deck. (See Figure 6-7). Tighten the jam
nuts on the control rod.
A. 3" Position - baffle is installed using the top set of
holes on the front baffle welded inside the cutter
deck. (See Figure 6-9). The Advantage cutter deck
will deliver the best quality-of-cut in very tall, wiry,
tough to cut grass.
B. 3-1/2" Position (factory setting) - baffle is installed
using the middle set of holes on the front baffle
welded inside the cutter deck. (See Figure 6-10). For
general purpose cutting, place the Custom Cut Baffle
in the 3-1/2" position. This gives the best mix of
cutting performance in all types of grass.
DECK
STOP
1/4"
C. 4" Position - baffle is installed using the bottom set of
holes on the front baffle welded inside the cutter
deck . (See Figure 6-11). Placing the baffle in the 4"
setting will enhance fall cutting (leaf pickup) and
reduce cutter deck "blowout".
390S0175-1
Figure 6-7. Cutter Deck Stop
26
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Section 6
To adjust the Custom-Cut Baffle height:
MIDDLE SET OF HOLES
FOR 3-1/2" SETTING
CARRIAGE BOLT
1. Place the cutter deck in the transport position.
2. Remove the hardware securing the Custom-Cut
Baffle to the cutter deck. (See Figure 6-8).
2004 CCB - 3-1/2" Setting
-NOTE-
FLATWASHER
ELASTIC STOP
NUT
Hardware location used in the illustrations are
for reference only. Location of hardware may
vary depending on cutter deck size.
Figure 6-10. 3-1/2" Custom-Cut Baffle Position
MOUNTING
MOUNTING
HARDWARE
HARDWARE
BOTTOM SET OF HOLES
CARRIAGE BOLT
FOR 4" SETTING
2004 CCB - 4" Setting
2004 CCB
FLATWASHER
ELASTIC STOP
NUT
Figure 6-8. Custom-Cut Baffle
Figure 6-11. 4" Custom-Cut Baffle Position
3. Move the Custom-Cut Baffle to desired position.
(See Figures 6-9 through 6-11 for position).
4. Reinstall the mounting hardware as shown. (See
Figures 6-10 though 6-11). Torque hardware to
39ft.lbs.
TOP SET OF HOLES
CARRIAGE BOLT
FOR 3" SETTING
2004 CCB - 3" Setting
FLATWASHER
ELASTIC STOP
NUT
Figure 6-9. 3" Custom-Cut Baffle Position
27
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Section 7
MAINTENANCE
7.1 MAINTENANCE CHART - RECOMMENDED SERVICE INTERVALS
HOURS
Break-In
(First 10)
8
40 100 200 500 Procedure
Comments
X
X
X
Check all hardware for tightness
Check hydraulic oil level
See paragraph 7.3
See paragraph 7.8
See paragraph 7.4
Check all belts for proper alignment
Change engine oil and filter
X
(First 5)
X
Check hydraulic hoses for leaks
Use extreme caution when
checking the hydraulic hoses
See paragraph 2.5
X
Check coolant level
Check engine oil level
*Clean mower
See paragraph 7.12
See paragraph 7.4
See paragraph 7.14
See paragraph 7.9
See paragraph 7.2
See paragraph 7.10
See paragraph 7.12
See paragraph 7.7
X
X
X
X
X
X
Check condition of blades
Apply grease to fittings
Check tire pressure
Check coolant level
X
X
Check battery electrolyte level,
clean battery posts and cables
Check belts for proper alignment
Apply grease to fittings
Change engine oil
See paragraph 7.8
See paragraph 7.2
See paragraph 7.4
See paragraph 7.6
X
X
X
*Clean air cleaner element
X
Check lubricant in cutter deck gearbox
See paragraph 7.11
* Perform these maintenance procedures more frequently under extreme dusty or dirty conditions
28
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Section 7
MAINTENANCE CHART - RECOMMENDED SERVICE INTERVALS (CONT'D)
HOURS
Break-In
(First 10)
8
40 100 200 500
Procedure
Comments
X
X
X
X
X
X
Apply grease to fittings
Check hardware for tightness
Change engine oil filter
Check hydraulic oil level
Replace engine fuel filter
See paragraph 7.2
See paragraph 7.4
See paragraph 7.3
See paragraph 7.5
Drain hydraulic system and
replace hydraulic oil
See paragraph 7.3
Use SAE 20W50
Motor Oil
X
X
X
Replace hydraulic oil filter
Replace cutter deck gearbox lubricant
Change coolant
See paragraph 7.3
See paragraph 7.1
See paragraph 7.12
7.2 LUBRICATION
GREASE FITTING LUBRICATION CHART
(SEE FIGURE 7-1)
LUBRICATION
NO. OF
LOCATION
INTERVAL
LUBRICANT
PLACES
1
2
3
4
5
6
7
8
9
Caster Wheel Pivot
Caster Wheel Bearings
Brake Actuator
500 Hours/Yearly
100 Hours/Bi-Weekly
200 Hours/Monthly
40 Hours/Weekly
100 Hours/Bi-Weekly
40 Hours/Weekly
40 Hours/Weekly
200 Hours/Monthly
40 Hours/Weekly
Chassis Grease
2
2
2
4
2
1
3
1
3
Chassis Grease
Chassis Grease
Cutter Deck Bellcranks
Cutter Deck Pusharms
PTO Spindle
Chassis Grease
Chassis Grease
+Lithium MP White Grease 2125
+Lithium MP White Grease 2125
Chassis Grease
Cutter Deck Spindle
Brake Handle
Cutter Deck Drive Shaft
Chassis Grease
+
Compatible Greases:
Mobilix #2 found at Mobil Service Stations
Ronex MP found at Exxon Service Stations
Super Lube MEP #2 & Super Stay-M #2 found at Conoco Stations
Shell Alvania #2 found at Shell Service Stations
Lidok EP #2 found at industrial shops
29
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Section 7
GREASE FITTING LUBRICATION
LUBRICANT / INTERVAL
LITHIUM MP WHITE GREASE 2125
( 40 HOURS / WEEKLY )
CHASSIS GREASE
( 100 HOURS / BI-MONTHLY )
CHASSIS GREASE
( 200 HOURS / MONTHLY )
CHASSIS GREASE
( 500 HOURS / YEARLY )
4
1
2
7
3
6
5
8
1
9
4
3
10
2
9
5
390S0145-2
Figure 7.1 Lubrication Fitting Points
30
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Section 7
7.3 HYDRAULIC SYSTEM
B. Changing Hydraulic Oil
The hydraulic oil should be changed after every 500
hours or annually, whichever occurs first. The oil should
also be changed if the color of the fluid has become black
or milky. A black color and/or a rancid odor usually
indicates possible overheating of the oil, and a milky
color usually indicates water in the hydraulic oil.
A. Checking Hydraulic Oil Level
The hydraulic oil level should be checked after the first
10 hours of operation. Thereafter, check the oil after
every 200 hours of machine operation or monthly,
whichever occurs first.
-IMPORTANT-
If the oil level is consistently low, check for
leaks and correct immediately.
-NOTE-
The hydraulic oil should be changed if you
notice the presence of water or a rancid
odor to the hydraulic oil.
1. Wipe dirt and contaminants from around the
reservoir cap. Remove the cap from the hydraulic oil
reservoir.
1. Park the mower on a level surface and stop the
engine.
2. Visually check the level of hydraulic oil. Hydraulic
oil must be at least 3" inches from top of the filler
neck. If the level cannot be determined visually, use
a clean tape measure to check the level. If the fluid
is low, add 20W50 motor oil. DO NOT overfill;
(overfilling the oil reservoir may cause oil seepage
around the cap area).
2. Place a suitable container under the hydraulic oil
reservoir. Remove the fill cap from the reservoir.
Remove the drain plug from the bottom of the
reservoir. (See Figure 7-2). Allow the fluid to drain
into the container and properly discard it.
3. Re-install the drain plug into the reservoir and be
sure it is tight.
3. Clean the fill cap and install it onto the reservoir.
-NOTE-
Before refilling the hydraulic oil reservoir the
hydraulic oil filter should be changed as
outlined in section C on the next page.
4. Fill the reservoir to 3" inches from the top of the filler
neck with 20W50 motor oil.
5. Replace the reservoir fill cap. Start the engine and
drive forward and backward for two minutes. Check
the oil level in the reservoir. If necessary, add oil to
the reservoir.
Hydraulic Oil
Reservoir
STT99HOR-1
Figure 7-2 Hydraulic Oil Reservoir
31
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Section 7
7.4 ENGINE OIL
HYDRAULIC
OIL FILTER
390S0155-1
ENGINE OIL
DIPSTICK
STT-BSD2001EOF
Figure 7-3 Hydraulic Oil Filter
ENGINE OIL
FILTER
ENGINE OIL
DRAIN PLUG
C. Changing Hydraulic Oil Filter Element
Figure 7-4 Engine Dipstick, Filter, Oil Drain
The hydraulic oil filter should be changed after every 500
hours of operation or annually, whichever occurs first.
A. Checking Engine Crankcase Oil Level
1. Remove the oil filter element (Figure 7-3) and
properly discard it. Fill the new filter with clean oil
and install the filter. Hand tighten only.
The engine oil level should be checked after every 8 hours
of operation or daily as instructed in the Engine Operator’s
Manual furnished with this mower (See Figure 7-4).
2. Run the engine at idle speed with the speed control
lever in neutral for five minutes.
B. Changing Engine Crankcase Oil
3. Check the oil level in the hydraulic tank. It must be
3" inches from the top of the filler neck. If
necessary, add SAE 20W50 motor oil.
After the first 5 hours of operation, change the engine
crankcase oil and replace the oil filter. Thereafter, change
the engine crankcase oil after every 100 hours of operation
or bi-weekly, whichever occurs first. Refer to the Engine
Operator’s Manual furnished with this mower for
instructions (See Figure 7-4).
C. Changing Engine Oil Filter
After the first 5 hours of operation, replace the engine oil
filter. Thereafter, replace the oil filter after every 200 hours
of operation or every month, whichever occurs first. Refer
to Engine Operator’s Manual for instructions
(See Figure 7-4).
32
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Section 7
2. Install a new fuel filter. Be sure it is installed in the
proper direction. Secure to the fuel hose using the
two clamps.
7.5 ENGINE FUEL SYSTEM
7.6 ENGINE AIR CLEANER
To avoid injury from burns, allow the mower to cool
before removing the fuel tank cap and refueling.
A. Cleaning and/or Replacing Air Cleaner
Element
For any air cleaner, the operating environment dictates
the air cleaner service periods. To make it convenient
for you we have installed an "Air Cleaner Indicator"
which is located just behind the air filter. The indicator
window will turn red when it is time to service the air
filter. Do not service the filter unless this indicator is red.
-NOTE-
In extremely dusty conditions it may be
necessary to check the indicator daily to
prevent engine damage.
Fuel Filter
(with hose clamps
above and below)
1. Snap open the two clips securing the air cleaner
cover to the air cleaner box. Remove the air cleaner
cover, clean the duck bill vent of any dust and set the
cover aside.
STT99FF-1
Figure 7-5 Fuel Filter
2. Remove the air cleaner element and inspect.
A. Filling the FuelTank
3. Clean or replace the element as recommended by
the engine manufacturer.
Fill the fuel tank at the beginning of each operating day to
within one inch below the filler neck. Do not overfill.
Use clean, fresh diesel fuel with a minimum cetane rating
of 40.
4. Replace the air filter cover and be sure to snap the
two clips closed.
5. Reset the air cleaner indicator by pushing the button
on the end of the indicator. The indicator window
should return to clear.
B. Replacing In-Line Fuel Filter Element
-NOTE-
7.7 BATTERY
The fuel filter is located below the hydraulic
tank. Figure 7-5 is for illustration purposes
only.
WARNING:
Lead-acid batteries produce flammable and
explosive gases.To avoid personal injury
when checking, testing or charging
The in-line fuel filter (Figure 7-5) should be replaced
after every 500 hours of operation or annually, whichever
occurs first.
batteries, DO NOT use smoking materials
near batteries. Keep arcs, sparks and flames
away from batteries. Provide proper
ventilation and wear safety glasses.
1. Close the shut-off valve. Remove the two clamps
securing the fuel filter to the fuel hose. Remove the
fuel filter.
33
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Section 7
B. Charging the Battery
WARNING:
Batteryposts,terminals,andrelatedaccessories
contain lead and lead compounds, chemicals
known to cause cancer and reproductive harm.
Wash hands after handling.
Refer to the battery charger’s manual for specific
instructions.
Under normal conditions the engine’s alternator will have
no problem keeping a charge on the battery. If the
battery has been completely discharged for a long period
of time, the alternator may not be able to recharge the
battery, and a battery charger will be required.
WARNING:
DO NOT charge a frozen battery. It may explode and
cause injury. Let the battery warm before attaching a
charger.
Electric storage battery fluid contains
sulfuric acid which is POISON and can
cause SEVERE CHEMICAL BURNS. Avoid
contact of fluid with eyes, skin, or clothing.
Use proper protective gear when handling
batteries. DO NOT tip any battery beyond
45° angle in any direction. If fluid contact
does occur, follow first aid suggestions
below.
Whenever possible, remove the battery from the mower
before charging and make sure the electrolyte covers the
plates in all cells.
WARNING:
BATTERIES PRODUCE EXPLOSIVE
GASES. Charge the battery in a well
ventilated space so gases produced while
charging can dissipate.
BATTERY ELECTROLYTE FIRST AID
EXTERNAL CONTACT — Flush with water.
EYES — Flush with water for at least 15
minutes and get medical attention
immediately.
Charging rates between 3 and 50 amperes are
satisfactory if excessive gassing or spewing of
electrolyte does not occur or the battery does not feel
excessively hot (over 125°F). If spewing or gassing
occurs or the temperature exceeds 125°F, the charging
rate must be reduced or temporarily stopped to permit
cooling.
INTERNAL — Drink large quantities of water.
Follow with Milk Of Magnesia, beaten egg, or
vegetable oil. Get medical attention
immediately. In case of internal contact, DO
NOT give fluids that would induce vomiting.
C. Jump Starting
1. The booster battery must be a 12 volt type. If a
vehicle is used for jump starting, it must have a
negative ground system.
2. When connecting the jumper cables, connect the
positive cable to the positive battery post, then
connect the negative cable to the negative battery
post.
34
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Section 7
7.8 DRIVE BELTS
B. Blade Sharpening
-NOTE-
All drive belts are spring loaded and self-tensioning,
however after the first 2, 4, 8 and 10 hours of operation,
the belts should be checked for proper alignment and
wear. Thereafter, check the belts after every 40 hours
of operation or weekly, whichever occurs first.
If possible, use a file to sharpen the blade.
Using a wheel grinder may burn the blade.
-NOTE-
DO NOT sharpen the blades beyond 1/3 of the
width of the blade. See Figure 7-9, Page 33.
-NOTE-
If you experience frequent belt wear or breakage,
see your authorized Scag service center for belt
adjustment.
1. Sharpen the cutting edge at the same bevel as the
original. See Figure 7-9, Page 33. Sharpen only the
top of the cutting edge to maintain sharpness.
7.9 CUTTER BLADES
A. Blade Inspection
Angle Blade Back
Do Not Cut In
1. Remove the ignition key before servicing the blades.
2. Raise the mower deck to the highest position. Place
the lanyard pin in the highest cutting height positon to
prevent the cutter deck from falling.
X
X Must NOT Exceed
1/3 Blade Width
30
SGB033
Figure 7-9 Blade Sharpening
WARNING:
Always wear proper hand and eye protection
2. Check the balance of the blade. If the blades are out
of balance, vibration and premature wear can occur.
See your authorized Scag dealer for blade balancing
or special tools, if you choose to balance your own
blades.
when working with cutter blades.
3. Check the cutter blades for straightness. If the
cutter blades appear bent, they will need to be
replaced.
C. Blade Replacement
WARNING:
WARNING:
Always wear proper hand and eye protection
when working with cutter blades.
Do not attempt to straighten a bent blade, and
never weld a broken or cracked blade. Always
replace it with a new blade to assure safety.
1. Remove the ignition key before replacing the blades.
4. If a blade cutting edge is dull or nicked, it should be
sharpened. Remove the blades for sharpening. See
"Blade Replacement."
2. Raise the mower deck to the highest position. Place
the lanyard pin in the highest cutting height positon to
prevent the cutter deck from falling.
-NOTE-
Keep the 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 the
blade drive by pulling hard.
35
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Section 7
6. Install the hex nut to the blade bolt at the top of the
cutter spindle. Secure the blades from rotating and
torque to 75 ft-lbs. (See Figure 7-10)
3. Secure the cutter blades to prevent them from
rotating, (use the optional Blade Buddy tool, P/N
9212, to assist in securing the cutter blades), remove
the nut from the blade attaching bolt. Remove the
cutter blade, bolt and spacer from the spindle shaft.
(Figure 7-10)
7.10 TIRES
Check the tire pressures after every 8 hours of operation
or daily.
-NOTE-
Caster Wheels ........................................ 25 PSI
Drive Wheels ......................................... 12 PSI
The front of the machine will have to be raised
slightly to remove the blade bolt from the cutter
spindle.
7.11 CUTTER DECK GEARBOX
A. Checking Lubricant Level
CAUTION:
4. To install the new cutter blade, put the flat washer
onto the blade bolt and slide the bolt into the hole in
the cutter blade.
HEX NUT-TORQUE
TO 75 LB-FT
The cutter deck gearbox can reach high
operating temperatures. Allow the cutter deck
gearbox to cool before servicing.
SPINDLE
CUTTER
SHAFT
DECK
HEX HEAD
BOLT / NUT
SPINDLE
ASSEMBLY
CUTTER DECK
CUTTER BLADE
SPACER
GEARBOX
CHECK
PLUG
390S0161
Figure 7-12 Cutter Deck Gearbox
CUTTER
BLADE
The fluid level in the cutter deck gearbox (Figure 7-12)
should be checked after every 100 hours of operation or
bi-weekly, whichever occurs first.
HEX HEAD BOLT
WASHER
390S0160
Figure 7-10 Blade Replacement
1. Lower the cutter deck to to its lowest position to
gain access to the cutter deck gearbox.
-NOTE-
Be sure that the blade is installed with the lift
wing toward the top.
5. Install the spacer onto the blade bolt and insert the
bolt into the cutter spindle shaft.
36
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Section 7
2. Clean and remove the check plug from the side of
the gearbox (See Figure 7-12). Visually check that
the lubricant level is up to the bottom edge of the
check plug hole. If lubricant is low, add SAE 80/90
lubricant through the check plug hole in the gearbox
until it is level with the bottom of the check plug hole.
Install the check plug and tighten securely.
2. Visually check the coolant level. The coolant level
should be up to the bottom of the filler neck as
shown in figure 7-13. Add a mixture of coolant and
soft water as needed.
-NOTE-
Refer to the coolant manuafacturer's instruc-
tions for the proper coolant mixture ratio.
B. Changing Lubricant
Fill to Bottom of
Filler Neck
The lubricant in the cutter deck gearbox should be
changed every 500 hours of operation or yearly,
whichever occurs first.
1. Place a suitable container beneath the cutter deck
gearbox and locate the gearbox drain plug.
2. Remove the drain plug and drain the lubricant into
the container and properly discard it.
030467-13
Figure 7-13 Coolant Level in Radiator
3. Re-install the drain plug and add EP-80/90 lubricant
through the check plug hole in the gearbox until it is
level with the bottom of the check plug hole. Install
the check plug and tighten securely.
3. Replace the radiator cap. Push down on the cap and
turn clockwise until it stops.
-NOTE-
7.12 COOLING SYSTEM
The cooling system should be flushed and
the coolant replaced every 500 hours of op-
eration or annually. See your Scag dealer for
proper coolant replacement.
WARNING:
To avoid burns, always allow the engine to
cool before removing the radiator cap.
B. Cleaning the Radiator Debris Screen
After each day of operation, remove and clean the
radiator debris screen.
A. Checking Coolant Level
The coolant level should be checked before each day of
operation.
CAUTION:
To avoid personal injury, always wear safety
glasses when using compressed air.
1. Remove the radiator cap by turning it slowly
counterclockwise to the first stop and allow any
pressure to be released. Push down on the cap and
turn counterclockwise to remove.
1. Pull the debris screen up to remove.
2. Clean the debris screen with compressed air or a
water hose.
37
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Section 7
-NOTE-
Check the radiator for excessive debris and
clean with compressed air. Never spray a hot
engine with water, use only compressed air to
remove debris.
3. Re-install the debris screen to the radiator.
C. Checking The Fan Belt Tension
Periodically check the fan belt tension. The belt should
deflect 1/2" with 10 pounds of pressure. See your Scag
dealer if the belt is in need of adjustment or replacement.
7.13 BODY, DECK, AND UPHOLSTERY
CAUTION:
Do not wash any portion of the equipment
while it is hot. Do not wash the engine; use
compressed air.
1. After each use, wash the mower and cutter deck.
Use cold water and automotive cleaners. Do not use
pressure cleaners.
2. Do not spray electrical components.
3. Use a mild soap solution or a vinyl/rubber cleaner to
clean the seat.
4. Repair damaged metal surfaces using Scag touch-up
paint available from your authorized Scag dealer.
Wax the mower for maximum paint protection.
38
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NOTES
39
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61A, 72A CUTTER DECKS
60
14
29
20
24
58
24
67
53
52
28
69
64
24
14
44 61 63
50
56
18
52
24
14
56
29
A
11
46
4
28
B
52
65
23
29
21
58
49
58
66
B
56
55
A
33
3
15
51
13
23
54
17
13
12
12
32
28
31
55
59
27
2
26
12
32
57
13
68
B
47
3
3
31
3
B
6
7
5
8
35
30
13
23
26
36
30
10
23
37
45
44
38
39
71
51
25
12
1
70
73
19
40
42
22
48
37
72
62
34
41
43
9
29
STT-BSG 2004 CD
16
40
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61A, 72A CUTTER DECKS
Ref. Part
No. No.
Ref. Part
No. No.
Description
Description
43 481035
44 48114-04 Grease Fitting
Nut, Special 1 - 1/16-18
1
1
2
3
4
5
6
7
8
9
461657
461659
Cutter Deck, 61” Advantage (Includes Decals)
Cutter Deck, 72” Advantage (Includes Decals)
45 48677
46 482245
47 48038
48 482881
482882
49 482486
50 481558
50 481980
51 45944
52 48926
53 48141
54 461174
55 48224
56 482416
57 422713
58 482745
482747
Relief Fitting, Tapered Spindle
Spring, Discharge Chute
Guide, Roller
04003-04 Bolt, Carriage 5/16-18 x 1"
04019-04 Nut, Hex Serrated Flange 3/8-16
481625-01 Wing nut, 3/8-16
481632
04003-26 Bolt, Carriage 3/8-16 x 4"
422478 Anti-Scalp Wheel Bracket
Cutter Blade, 21.0” 61”
Cutter Blade, 24.5" 72”
Gearbox Assembly, Deck Drive
Belt, Cutter Deck Drive, 61”
Belt, Cutter Deck Drive, 72”
Roller Shaft
Tapered Hub, 1-1/8" Bore
Tapered Hub, 1" Bore
Idler Arm, Cutter Deck
Bearings, Ball
Anti-Scalp Wheel
04017-27 Bolt, Hex Serrated Flange 3/8-16 x 1"
04043-06 Flatwasher, 5/8" (.688 x 1.75 x .134)
10 04021-05 Locknut, 3/8-16 Center Lock
11 461296 Discharge Chute, 61” & 72” Adv.
12 04001-12 Bolt, Hex Head 5/16-18 x 1.75" (Front)
04001.11 Bolt, Hex Head 5/16-18 x 1.50” (Rear)
13 04021-10 Nut, Hex Elastic Stop 5/16-18
14 04020-09 Nut, 5/8-11 UNC
Pulley, Idler
Base, Idler Pivot
15 451240
Push Arm Shaft
Pulley, 6.35 O.D. - 61”
Pulley, 6.95 O.D. - 72”
Mounting Plate, Gearbox
Belt Cover, 61”
Belt Cover, LH - 72”
Belt Cover, RH - 72”
Pusharm (includes items 44, 63 & 64)
Baffle, Custom Cut 61A
Baffle, Custom Cut 72A
16 04001-41 Bolt, Hex Head 5/8-11 x 9.50"
17 04003-12 Bolt, Carriage 5/16-18 x .75"
18 04001-154 Bolt, Hex Head 5/16-18 x 4.75"
19 04063-08 Key, 1/4 x 1/4 x 2"
59 422426
60 422413
422677
20 04063-01 Key, 1/4 x 1/4 x 1.25"
422708
21 04043-04 Flatwasher,3/8-.39 x .938 x .105 HD
22 04001-11 Bolt, Hex Head 5/16-18 x 1-3/4" Grade 8
23 04021-10 Nut, Hex Serrated Flange 5/16-18
24 04001-172 Bolt, Hex Head 1/2-20 x 1" Grade 8
25 48100-15 Bushing, .376 I.D. Oilite
61 461516
62 423792
423795
63 04020-16 Nut, Hex Head 5/8-18 UNF
64 48763 Rod End, 5/8" Male RH Thread
65 04001-79 Bolt, Hex Head 5/8-11 x 4-1/2"
66 481597
67 482746
482745
26 04030-03 Lockwasher, 5/16"
27 04040-15 Flatwasher, 5/16" (.375 x .875 x .083)
28 04041-07 Flatwasher, 3/8" (.391 x .938 x .105)
29 04021-09 Nut, Hex Elastic Stop 3/8-16
30 04001-62 Bolt, Hex Head 3/8-16 x 3.25"
31 04001-31 Bolt, Hex Head 3/8-16 x 2.50"
Spring, Cutter Deck
Pulley, 6.75 O.D. - 61”
Pulley, 6.35 O.D. - 72”
68 04110-03 U-Nut, 3/8-16
69 04021-13 Nut, Hex Elastic Stop 5/8-11
32 43503
Pivot, Idler - Short
70 423957
423958
71 482295
72 43590
Discharge Baffle 61”
Discharge Baffle 72”
Guide Roller
33 04001-136 Bolt, Hex Head 3/8-16 x 1.50" Grade 8
34 461663
35 43589
36 481024
37 481022
38 43644
39 43312
40 43296
41 481025
42 43297
Spindle Assembly
Spindle Shaft
Seal, Top
Bearing Assembly
Spindle Housing
Spacer, Outside
Spacer, Inside
Seal, Bottom
Spacer, Spindle
73 04003-23 Bolt, Carriage 3/8-16 x 1”
Spindle Bushing, Bottom
41
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CUTTER DECK CONTROLS
41
40
20
45
21
19
18
36
16
25
22
42
8
4
6
44
2
37
10 42
17
14
41
35
43
5
23
3
9
41
30
11
40
33
34
26
29
32 38
41
7
27
40
41
28
13
39
40
39
22
41
40
28
31
40
26
41
29
24
12
15
40
41
24
26
7
1
STT2002CDC
CUTTER DECK
42
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CUTTER DECK CONTROLS
Ref. Part
No. No.
Description
1
04041-07
Flatwasher, 3/8”
2
481764
Link, Deck Lift
3
4
5
6
7
8
9
481765
481766
04020-27
04020-28
04021-09
482429
Rod End, Female - 1/2-20 RH
Rod End, Female - 1/2-20 LH
Nut, Jam 1/2-20 RH
Nut, Jam 1/2-20 LH
Nut, 3/8-16 Elastic Stop
Slide Weldment, Height Adjustment
Spacer, Decklift Pedal
43391
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
43487
43526
43527
45904
45905
04021-05
422381
423509
422346
46975
48100-14
481428
481598
422451
04020-09
04019 -03
04040-09
04041-14
48114-04
04061-07
04021-10
04004-44
04067-05
04050-08
04021-07
04003-11
423463
04014-03
481547
48540
04001-20
04019-04
04050-10
04001-74
04003-04
04009-02
Pin, Decklift
Swivel Joint, LH
Swivel Joint, RH
Bellcrank Weldment, LH Rear
Bellcrank Weldment, RH Rear
Locknut, 3/8-16 Center Lock
Guide, Short
Guide, Long
Lockplate, Decklift
Deck Latch (Includes items 20& 21)
Bushing, .502 I.D.
Grip, Deck Latch
Spring, Helper (61” & 72” Cutter Decks Only)
Foot Pedal, Height Adjustment
Nut, Hex 5/8-11
Nut, Hex Serrated Flange 5/16-18
Flatwasher, 5/8" (.656 x 1.312 x .095)
Flatwasher, 1" (1.062 x 1.50 x .048)
Grease Fitting
Cotter Pin, 3/16 x 1”
Nut, Hex Elastic Stop 5/16-18
Stud, 5/8-11 x 22.0"
Ring Pin, 1/2 x 3.30"
Ring, Retaining 1" External "E"
Nut, Hex Elastic Stop 1/2-13
Bolt, Carriage 3/8-16 x 1-1/4"
Bracket, Cutting Height Adjustment
Screw, Cap 5/16-18 x 3" FHHS
Lanyard, Deck Height Pin
Chain
Bolt, Hex Head 3/8-16 x 1-1/2"
Nut, Hex Serrated Flange 3/8-16
Ring, Retaining 1/2" External "E"
Bolt, Hex Head 1/2-13 x 3"
Bolt, Carriage 5/16-18 x 1"
Bolt, Shoulder 1/2 x 3/4"
43
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SHEET METAL COMPONENTS
58
69
68
9
44
67
11
Suspension Seat
51
64
59
53
12
1
10
16
12
57
6
52
13
14
17
66
15
49
65
B
63
12
A
46
15
62
15
19
5
48
60
56
15
47
3
B
8
A
48
7
4
15
22
28
23
15
45
26
50
15
61
27
31
32
30
12
33
34
33
29
25
24
36
37
35
20
54
55
43
38
41
39
18
40
STT-BSG 2005 SMC
54
20
42
18
44
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SHEET METAL COMPONENTS
Ref. Part
No. No.
Ref. Part
No. No.
Description
Description
42
43
44
45
46
47
48
49
50
482619
482620
41020
481284
48566
04001-59
04019-02
482942
461447
Tire, 13 x 6.50 4-Ply (61A, 72A)
Rim Assembly, 61A & 72A (Inc. item 55)
Weight (61” cutter deck only)
Bumper, Rubber
1
2
3
4
5
6
7
8
451481
04001-09
43606
04041-07
423946
9270
04001-45
04021-09
482283
Fender Weldment, RH
Bolt, Hex Head, 5/16-18 x 1, Zinc
Spacer
Flatwasher, 3/8-.391 x .938 x .105
Seat Plate
Suspension Seat Assembly
Bolt, Hex Head 3/8-16 x 2.0”
Nut, Elastic Stop 3/8-16
Cable, Seat Stop
Bolt, Hex Head 1/4-20 x 1-1/4"
Nut, Hex Serrated Flange 1/4-20
Shock Absorber Kit
Caster Wheel Assy (Inc. 31 thru 43)
61A (LH)
9
Battery (Not Avail. through Scag)
Pad, Battery Cover
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
481780
461448
461449
461450
Caster Wheel Assy (Inc. 31 thru 43)
61A (RH)
Caster Wheel Assy (Inc. 31 thru 43)
72A (LH)
Caster Wheel Assy (Inc. 31 thru 43)
72A (RH)
Back Cusion Kit
Lumbar Kit
Knob Kit
Armrest Only
Armrest Assembly Kit, LH
Armrest Assembly Kit, RH
Bearing w/ Race
Grease Fitting
Seat Stop
422682
04003-12
423425
04029-01
04019-03
04003-30
48661
43584
04003-04
482622
04021-09
451648
04019-04
04017-27
451480
Cover, Battery
Bolt, Carriage 5/16-18 x 3/4"
Plate, Battery Box
Wing Nut, 1/4-20 x 3/4"
Nut, Hex Serrated Flange 5/16-18
Bolt, Carriage 1/4-20 x 6"
Rubber Pad
Spacer, Caster Wheel
Bolt, Carriage 5/16-18 x 1"
Seal
Lock Nut, 3/8-16, Elast. Stop
Main Frame
Nut, Hex Serrated Flange 3/8-16
Screw, Hex Serrated Flange 3/8-16 x 1”
Fender Weldment, LH
51
52
482940
482943
482948
482950
482945
482946
482621
48114-07
424106
482941
53
54
55
56
57
Seat Cusion Kit
423489
Foot Plate
Seat Drain Kit (Included with Seat Cusion)
Bolt, Hex Head 1/4-20 x 3/4”
Bolt, Hex Head 1/2-13 x 3.5”
Footrest
Bolt, Hex Head 1/2-13 x 1.5”
Mounting Bracket, Battery
Support Bracket, Battery Box
Flat Washer 1/2-.562 x .1.375 x .109
Seat Adjustment, Track Set
Weight Adjustment Kit
Knob Kit
04021-09
04001-19
04001-125
04021-13
481559
04021-20
481657
482028-01
451450
451451
451452
451453
481025
Nut, Hex Elastic Stop 3/8-16
Bolt, Hex Head 3/8-16 x 1”
Bolt, Hex Head 5/8-11 x 4”
Nut, Hex Elastic Stop 5/8-11
Cap, Grease
Nut, Hex Elastic Stop 1.0-14
Bearing W/Race
Plug, 1/4-28 THD Form
Extention Weldment, Caster 61A (LH)
Extention Weldment, Caster 61A (RH)
Extention Weldment, Caster 72A (LH)
Extention Weldment, Caster 72A (RH)
Seal, 2.00 OD. x 1.625 Bore
Nut, Hex Elastic Stop 1/2-13
Yoke Weldment, Caster (61A & 72A)
Bolt, Hex Head 1/2-13 x 9-1/2” (61A & 72A)
Sleeve, Caster Wheel (61A, 72A)
Wheel Assy (Inc.items 20, 42, 43, 54, 55)
58
59
60
61
62
63
64
65
66
04001-01
04001-145
481825
04001-71
423419
423624
04040-13
482952
482944
482948
04021-08
9240
423674
67
68
69
70
Nut, Elastic Stop 1/4-20
Cup Holder Assembly
Mounting Bracket, STT Cup Holder
Bolt, Hex Head 1/4-20 x 3/4”
36
37
38
39
40
41
04021-07
451416
04001-167
43583
04001-01
482504
45
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STT ROLL OVER PROTECTION SYSTEM
4
6
5
SEAT BELT
BRACKET
1
SEAT BELT
BRACKET
6
5
13
4
9
8
7
14
2
15
11
3
2
10
14
3
12
15
STT-BSD 2005 ROPS
46
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STT ROLL OVER PROTECTION SYSTEM
Ref. Part
No. No.
Description
1
2
3
4
5
6
7
8
9
461817
STT, ROPS
04001-82 Bolt, Hex Head 1/2-13 x 4-1/2”
04021-19 Nut, Center Lock 1/2-13
04001-178 Bolt, Hex Head 7/16-20 x 1”
04040-11 Flatwasher, 7/16-.500 x 1.25 x .083
483150
Seat Belt
04001-45 Bolt, Hex Head 3/8-16 x 2”
04041-07 Flatwasher, 3/8-.391 x .938 x .105
43606
Sleeve, Seat Base Mounting
10 04021-09 Nut, Elastic Stop 3/8-16
11 04001-09 Bolt, Hex Head 5/16-18 x 1”
12 424192
Bracket, Seat Hold Down
13 04030-05 Lockwasher, 7/16
14 04019-03 Nut, Serrated Flange 5/16-18
15 04040-13 Flatwasher, 1/2-.562 x 1.375 x .109
47
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DECK DRIVE COMPONENTS
31
32
4
17
33
14
11
35
34
36
30
12
1
19
41
39
2
29
18
40
43
42
21
20
44
38
35
13
42
15
4
43
47
5
37
6
45
45
16
40
46
23
TO
ENGINE
FLYWHEEL
To A
43
3
53
22
To B
43
58
7
25
24
43
9
TO
50
8
REAR
OF
26
27
ENGINE
57
51
52
60
61
28
10
25
59
35
43
54
24
55
67
49
64
27
22
63
A
B
5
66
59
44
35
55
80
65
35
35
62
35
68
81
82
65
59
16
40
65
35
48
42
74
69
73
71
70
79
75
78
73
77
76
72
2003 STTBSD-DDC
48
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DECK DRIVE COMPONENTS
Ref. Part
No. No.
Ref. Part
No. No.
Description
Description
53 04001-138 Bolt, Hex Head 3/8-16 x 3.75” Grade 8
54 04030-04 Lock Washer 3/8” .638 x .380 x .094”
55 04020-04 Nut 3/8-16
1
2
3
4
5
6
7
8
423464
481531
481309
Belt Guard, Rear
Hinge, Rear Belt Guard
Latch, Hood
56 04021-05 Nut, Elastic 3/8-16
04003-07 Carr. Bolt 1/4-20 x .5”
04019-02 Nut, Serr. Flg. 1/4-20
04010-01 Screw, #10-32 x .5, Phillips Head
04031-01 Lock Washer, #10
04020-01 Nut, #10-32
57 43604
Pivot, Idler - Long
58 04001-62 Bolt, Hex Head 3/8-16 x 3-1/4”
59 04021-10 Nut, Elastic 5/16-18
60 04001-49 Bolt, Hex Head 5/16-18 x 3.00”
61 04030-03 Lock Washer 5/16”
9
451458
Weldment, Pump Mounting
Spacer, Engine
Stud, Anti-Rotation
62 422684
63 481284
Brace, Engine Mounting Plate
Bumper, Rubber
10 43506
11 43507
12 482433
13 48028-05 Tie, Cable
14 04069-01 Pin, Rue
64 04019-03 Nut, Serr. Flg. 5/16-18
65 04001-19 Bolt, Hex Head 3/8-16 x 1.00”
66 48030-09 Clamp, Wire
Linkage Assembly, Anti-Rotation
67 04003-12 Bolt, Carr. 5/16-18 x .75”
15 04001-20 Bolt, Hex Head 3/8-16 x 1.50”
68 482438
69 43296
70 43297
71 481025
72 481035
73 481022
74 43312
Driveshaft
Spacer, Inside
Bushing
Seal, 2.00 OD x 1.625 Bore
Nut, 1.06-18
16 461697
17 461613
18 481398
19 481536
Spindle Assembly, Deck Drive
Clutch, Electric PTO
Pulley, 6.35” dia. Tapered Bore
Hub, Tapered 1” dia.
20 04063-06 Key, 1/4 x 1/4 x 1.5”
21 04001-175 Bolt, Hex Head 5/16-18 x 1-1/2” Grade 8
22 482752
23 482791
24 04012-04 Set Screw, 5/16-18 x .375”
25 481884 Hub, Tapered 17mm Bore
Roller Bearing Assembly
Spacer, Outside
Pulley, 6.25” OD, Tapered
Pulley, 5.45” OD
75 48114-04 Grease Fitting 1/4-28 Self Tapping
76 48677
77 43644
78 481024
79 43534
Relief Fitting
Spindle Housing
Seal, 2.00 OD x 1.5 Bore
Shaft, Spindle
26 04001-172 Bolt, Hex Head 1/4-20 x 1” Grade 8
27 04063-27 Key, 5mm x 5mm x 30mm
80 04012-08 Screw, Set 3/8-16 x 3/8”
81 04021-05 Nut, Center Lock 3/8-16
82 04001-21 Bolt, Hex Head 3/8-16 x 1-3/4”
28 481461
29 481460
30 04063-11 Key, 1/4 x 1/4 x 2.5”
Belt, Pump Drive
Belt, Deck Drive
31 04001-101 Bolt, Hex Head 7/16-20 x 2.5”
32 04030-05 Lock Washer 7/16”
33 04041-28 Flat Washer 7/16 x .469 x 1.75 x .25”
34 04001-109 Bolt, Hex Head 1/4-20 x 1.375”
35 04021-09 Nut, Elastic Stop 3/8-16
36 04041-07 Flat Washer 3/8, .391 x .938 x .105”
37 04063-20 Key, 1/4 x 1/4 x 1.00”
38 461079
Idler Arm
39 04001-46 Bolt, Hex Head 3/8-16 x 2.25”
40 04019-04 Nut, Serr. Flg. 3/8-16
41 48181
Pulley, PTO Idler
42 04001-136 Bolt, Hex Head 3/8-16 x 1.5” Grade 8
43 04043-04 Flat Washer 3/8” Grade 8
44 481522
45 48224
46 43576
Spring
Bearing
Pivot, Idler - Short
47 04001-145 Bolt, Hex Head 3/8-16 x 2-3/4”
48 04063-20 Key, 1/4 x 1/4 x 1”
49 04001-09 Bolt, Hex Head 5/16-18 x 1.00”
50 461015
51 48198
52 43277
Idler Arm
Pulley, Pump Idler
Spacer
49
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RADIATOR & ENGINE BRACKETS
"E"
65
7
62
63
12
8
64
56
6
50
"C"
"D"
9
"D"
66
9
"C"
67
55
2
10
11
5
4
46
3
70
72
1
35
13
42
9
10
38
39
14
59
36
30
"A"
37
40
45
54
33
47
16
49
42
41
15
69
"E"
51
"B"
TO
FRAME
44
60
52
26
25
9
TO
PUMP
MTG
61
22
21
43
48
44
PLATE
17
20
55
19
18
53
"B"
45
71
34
49
27
47
44
32
A
29
9
26
25
31
24
68
44
57
23
9
55
44
44
58
22
53
STT-BSD 2002EAP
28
50
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RADIATOR & ENGINE BRACKETS
Ref. Part
No. No.
Ref. Part
No. No.
Description
Description
1
2
3
4
5
6
482308
481742
482366
423379
Radiator
49 04017-16 Bolt, Hex Head 5/16-18 x 3/4”
Hose, Upper Radiator
Hose, Lower Radiator
Shroud, Fan
50 423641
Catch Bracket, Hood Latch
51 04001-32 Bolt, Hex Head 3/8-16 x 1-1/4”
52 04041-07 Flatwasher, 3/8-.391 x .938 x .105
53 04041-32 Flatwasher, 1/2-.531 x 2.13 x .1345
54 04003-04 Bolt, Carriage 5/16-18 x 1”
55 04021-10 Nut, Elastic Stop 5/16-18
04010-26 Screw. #10-32 x 1/2”
**
Coolant Tank Assembly w/hose (Not Avail.
Through Scag, Contact Briggs & Stratton)
Support Bracket, Hood
7
8
9
423639
481284
56 482603
Rubber Isolator
Bumper, Rubber
57 04041-35 Flatwasher, 7/16-.469 x 2.0 x .1345
58 04021-21 Nut, Center Lock 7/16-14
59 04021-10 Nut, Elastic Stop 5/16-18
60 04003-12 Bolt, Carriage 5/16-18 x 3/4”
04019-03 Nut, Serrated Flange 5/16-18
10 48136-12 Clamp, 1-1/2” Dia.
11 451486
12 422703
13 482404
14 423640
15 423637
16 451487
17 482363
18 04001-145 Bolt, Hex Head 1/2-13 x 3-1/2”
19 04030-06 Lockwasher, 1/2” Spring
20 04041-33 Flatwasher, 1/2-.531 x 2.0 x .25
21 482403
22 423381
23 451403
24 423382
25 482362
Hood Weldment
Hinge, Hood
Muffler with Guard
Brace, Muffler Support
Mounting Bracket, Hood
Mounting Bracket Weldment, Rear Engine Mount
Engine ISO Mount, Rear
61
**
Bolt, (Not Available Through Scag,
Contact Briggs & Stratton)
62 04003-04 Bolt, Carriage 5/16-18 x 1”
63 04017-16 Bolt, Hex Head 5/16-18 x 3/4” Serr. Flange
64 481309
Latch, Hood
65 04010-21 Screw, #10-32 x .375
66 04031-01 Lockwasher, #10 Spring
67 04020-01 Nut, #10
68 482601
Ring, Isolator
Manifold Extension, Exhaust
Mounting Bracket, Engine
Mounting Bracket Weldment, Engine L.H.
Mounting Bracket, Engine L.H.
Engine ISO Mount, Front
69 04021-09 Nut, Elastic Stop 3/8-16
70 04021-01 Nut, Elastic Stop #10-32
71 04030-03 Lockwasher, 5/16 Spring
72 48633
Muffler Clamp 1-1/2” Dia.
26 04041-33 Flatwasher, 1/2-.531 x 2.0 x .25
27 482270
Engine, Briggs & Stratton 31hp Diesel
(Spec. # ) Not Available Through Scag, Contact
Briggs & Stratton
28 04021-07 Nut, Elastic Stop 1/2-13
29 482602
30 43621
Bushing, Radiator Isolator
Bushing, Radiator ISO Mount
Support Bracket, Radiator
Mounting Bracket, Engine R.H.
Mounting Bracket Weldment, Engine R.H.
Mounting Bracket, Water Seperator
Debris Screen
Hose, Air Intake
Air Cleaner Assembly w/mounting Band
Pre Cleaner, Engine Air
31 423638
32 423383
33 451404
34 423424
35 451083
36 482368
37 482405
38 481816
39 481924
40 481818
41 423915
Adapter, Pre Cleaner
Indicator, Air Cleaner
Bracket, Air Cleaner
42 48136-15 Clamp, Hose 2-1/2” Dia.
43
**
Fuel Filter, Water Seperator
(Not Avail. Through Scag)
44 04001-08 Bolt, Hex Head 5/16-18 x 3/4”
45 04001-52 Bolt, Hex Head 1/2-13 x 2-1/2”
46 481827
Elbow, Exhaust
47 04002-01 Bolt, Hex Head M8-1.25 x 3mm
48 04001-32 Bolt, Hex Head 3/8-16 x 1-1/4”
51
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BRAKE AND STEERING COMPONENTS
TO RH PUMP
1
TO LH PUMP
35
37
34
36
2
33
35
31
3
37
36
4
33
27
A
6
5
28
66
30
17
29
76
75
9
8
25
34
10
20
14
78
13
12
38
11
7
A
13
61
59
24
39
74
38
63
14
60
62
68
24
9
16
19
64
22
B
77
26
79
67
60
41
9
51
23
72
52
34
11
21
57
56
5
18
22
B
54 49
55
15
65
38
73
48
45
21
23
58
36 50
71
40
23
80
41
5
34
47
15
43
44
45
53
69
STT2002B&SC
46
42
70
32
52
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BRAKE AND STEERING COMPONENTS
Ref. Part
No. No.
Ref. Part
No. No.
Description
Description
1
2
3
4
5
6
7
482340
461386
Grip, Handle Bar
Handle Bar (Includes item 1)
44 04001-22 Bolt, Hex Head 3/8-16 x 2-3/4"
45 04019-04 Nut, Hex Serrated Flange 3/8-16
46 48343-04 Clevis, Traction Control
47 04064-02 Pin, Clevis 3/8-16 x 1-1/16"
48 04061-02 Pin, Cotter 3/32 x .75
04001-32 Bolt, Hex Head 3/8-16 x 1-1/4"
04030-04 Lockwasher, 3/8"
04041-07 Flatwasher. 3/8" (.391 x .938 x .105)
422372
451483
451484
Bar, Control Lever
Control Lever Weldment, LH
Control Lever Weldment, RH
49 04004-34 Rod, Parking Brake
50 48544
51 48796
Rod End, LH Thread
Bushing, Self Align
8
9
04001-17 Bolt, Hex Head 5/16-18 x 2"
04021-10 Nut, Hex Elastic Stop 5/16-18
52 04001-08 Bolt, Hex Head 5/16-18 x 3/4"
53 04001-147 Bolt, Hex Hd 3/8-24 x 5-1/4", 23/4" Thrd
10 04001-45 Bolt, Hex Head 3/8-16 x 2"
11 04021-09 Nut, Hex Elastic Stop
54 481637
Switch
55 04010-12 Screw, Hex SLTD WSHR Head #10 32 x 3/4"
12 423488
13 48224
14 43607
Mount, Control Linkage
Ball Bearings, Neutral Return
Spacer
56 461471
461472
57 45953
58 48807
Brake Linkage, LH
Brake Linkage, RH
Bellcrank, Brake Actuator
Spring
15 04069-01 Pin, Rue Cotter 3/8 Dia.
16 04001-13 Bolt, Hex Head, 5/16-18 x 2.75 Zinc.
17 04021-13 Nut, Hex Elastic Stop 5/8-11
59 04001-163 Bolt, Hex Head 1/2-13 x 3-3/4"
60 04021-19 Locknut, Hex 1/2-13 Center Lock
61 04001-52 Bolt, Hex Head 1/2-13 x 2-1/2"
18 461601
461602
Bracket, Control Lever LH
Bracket, Control Lever RH
62 481787
63 04001-12 Bolt, Hex Head, 5/16-18 x 1.75, Zinc
64 481601 Brake Band Assembly
65 04064-16 Pin, Clevis 3/8" Dia. x 1.93"
Wheel Motor, Ross
19 04003-04 Bolt, Carriage 5/16-18 x 1"
20 43600 Spacer, Bearing
21 04003-12 Bolt, Carriage 5/16-18 x 3/4"
22 04019-03 Nut, Hex Serrated Flange 5/16-18
23 04050-01 Ring, Retaining 5/8" External "E"
66 43063
Spacer
67 461438
Wheel Hub/Brake Drum Assembly
24 43602
25 45918
Spacer
Bracket, Neutral Return
68 04063-25 Key, Woodruff 5/16 x 1”
69 481850
481851
Wheel Assembly 24 x 12-12 Turf Master
Rim W/Valve Stem
26 04003-02 Bolt, Carriage 1/4-20 x 3/4"
27 04040-14 Flatwasher, 1/4" (.312 x .750 x .065)
28 04021-08 Nut, Hex Elastic Stop 1/4-20
481852
Tire, 24 x 12-12 Turf Master
70 04028-02 Lug Nut, 1/2-20
29 43477
30 481389
Pin, Retaining Spring
Spring
71 48680
72 422373
Nut, Hex Castle
Threaded Plate
31 04060-01 Roll Pin, Spring 5/32 x 3/4"
32 04061-06 Pin, Cotter 9/16 x 1-1/2"
73 04001-20 Bolt, Hex Head 3/8-16 x 1-1/2"
74 423279
75 423491
Plate Weldment, Motor Backing
Actuator Switch
33 482586
34 04020-25 Nut, 3/8-24 RH Thread
35 481767 Tube, Control Link
36 04020-26 Nut, Hex 3/8-24 LH Thread
37 482585 Rod End, Male 3/8-24 LH Thread
38 04021-10 Locknut, 5/16-18, Elastic Stop
39 482794 Gas Damper
Rod End, Male 3/8-24 RH Thread
76 04017-16 Bolt, Hex Serrated Flange 5/16-18 x 3/4"
77 04003-36 Bolt, Carriage 3/8-16 x 4-3/4”
78 04001-19 Bolt, Hex Head 3/8-16 x 1”
79 481638
Switch
80 04001-168 Bolt, Hex Head 3/8-16 x 1-1/4” Grade 8
40 04001-31 Bolt, Hex Head 3/8-16 x 2-1/2”
41 48114-04 Grease Fitting
42 461082
43 481548
Lever, Parking Brake (Includes item 43)
Grip, Parking Brake
53
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FUEL AND HYDRAULIC SYSTEM
3
1
DUMP
VALVE
7
28
7
D
23
24
26
40
4
57
56
54
B
43 (2)
7
28
D
7
51
28
TO
INJECTION
PUMP
52
4
47
27
28
4
49
28
53
4
A
30
43 (2)
46
29
30
C
E
F
10
11
44 45 50
42
To Back Side
of Reservoir
(Not Shown)
B
A
4
H
22
41
2
I
4
33
9
34
25
35
6
30
39
48
55
G
12
18
8
20
19
G
I
FROM
FUEL
RAIL
13
14
H
21
31
22
34
25
35
60
15
61
38
16
17
Z
62
17
E
2
D
32
5
58
59
36
37
Z
F
2
C
2002 STT-BSD F&HS.eps
54
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FUEL AND HYDRAULIC SYSTEM
Ref. Part
No. No.
Ref. Part
No. No.
Description
Description
36 423701
37 04019-03 Nut, 5/16-18 Serrated Flange
38 04003-02 Bolt, Carraige 1/4-20 x 3/4”
Support Bracket, Fuel Tank
1
2
3
4
5
6
7
8
9
04110-01 U-Nut 1/4-20
48136-13 Hose Clamp, 0.69 dia.
04001-03 Bolt, Hex Head 1/4-20 x 2.0”
39 482574
40 423513
41 423485
42 482516
43 48350-05 Elbow, 90 Degree 7/8-14 Thread
44 04001-59 Bolt, Hex Head, 1/4-20 x 1-14”
45 04030-02 Lockwasher, 1/4” Spring
46 04060-06 Roll Pin, Spring 3/16 x 3/4”
47 482571
48 482573
49 422694
50 481793
51 481792
52 04021-09 Nut, Hex, Elastic Stop 3/8-16
53 04001-32 Bolt, Hex Head, 3/8-16 x 1-1/4
54 481819
55 482498
56 04021-09 Nut, Hex Elastic Stop 3/8-16
57 04043-04 Flatwasher, 3/8” (.391 x .938 x .105) Grade 8
Elbow, 90 Degree
48811
482505
Hose, 3/8” ID Pushlock - (order by inch)
Cooler, Oil
Strap, Hydraulic Tank
Support Bracket, Hydraulic Tank
Hose Assembly, Pump
482266-01 Elbow, 90 Degree - 9/16 O-ring x 3/8 Hose
482266-02 Elbow, 90 Degree - 3/4 O-ring x 3/8 Hose
482417
482563
Oil Filter Base
Hose Assembly, 1/2” ID (Tank to Filter Base)
Fuel Hose to Carb., 1/4” ID (order by inch)
Fuel Filter (Purchase from Briggs & Stratton)
Fuel Hose, 1/4” ID. (order by inch)
Valve, Shutoff
10 48058
11 **
12 48058
13 481308
14 48059-04 Clamp, Fuel Hose 5/16 ID
15 481178
16 481312
17 48309
18 04001-09 Bolt, Hex Head 5/16-18 x1.0” Zinc
19 04019-03 Nut, Serrated Flange 5/16-18
20 48758
21 482483
22 04021-08 Nut, Hex Elastic Stop 1/4-20
23 481164
24 481507
25 48603-02 O-Ring
26 461451
27 482572
28 48136-13 Hose Clamp, 0.69 dia.
Bushing, .56 Dia.
Bushing, .78 Dia.
Clamp Plate, Pump Control
Block, Pump Control
Pump, Left Hand, BDP-21L-305
Fuel Hose, 5/16” ID. (order by inch)
Hose Fitting
Bushing
Pump, Right Hand, BDP-21L-403
Cap, Fuel Tank W/Gauge
Oil Filter
Tee, 3/4 O-ring x JIC x 1/2” Hose
58 423524
423525
59 04001-08 Bolt, Hex Head 5/16-18 x 3/4”
60 48059-03 Clamp, 3/16 Hose
61 481179
62 481778
Mounting Bracket - LH, Oil Cooler
Mounting Bracket - RH, Oil Cooler
Cap, Hydraulic Tank
Insert, Filler Neck
Oil Reservoir Assembly (includes 24, 27, 39)
Elbow, 90 Degree, 9/16-18 JIC x 9/16 O-Ring
Hose, 3/16” I.D. (order by inch)
Hose Fitting, Straight DAPCO
29 48811
Hose, 3/8” ID, Pushlock (order by inch)
30 04010-10 Screw, Phillips Head, 1/4-20
31 48571-02 Cap
32 461452
Fuel Tank Assembly (includes items 23 & 24)
33 48136-05 Clamp, Hose
34 48350-05 Elbow, 90 Degree, 7/8-14 THD
35 48938-02 Bushing, 7/8-14 JIC x 3/4-16 O-Ring
** Available through the individual engine manufacturer.
55
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ELECTRICAL SYSTEM
42
37
31
30
33
GLOW
PLUGS
19
29
34
STARTER
43
38
32
B
2
19
1
35
C
D
24
7
7
25
28
39
13
15
18
A
C
D
17
14
19
B
12
20
40
11
36
16
41
23
22
21
22
9
21
6
24
36
1
25
10
22
2
8
21
26
3
27
5
A
4
21
22
25
27
24
20
2005STTBSD-EES
56
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ELECTRICAL SYSTEM
Ref. Part
No. No.
Description
1
2
3
4
5
6
7
481176-08 Cable, Positive Battery
481176-07 Cable, Negative Battery
461613
481808
*
481687
48798
Clutch, Electric PTO
Module, Interlock
Battery (not available through Scag)
Switch, PTO
Switch, Key (Includes Nut and Lockwasher)
48017-03 Nut, 5/8-32 Special
48017-04 Lock Washer 5/8”
8
9
481806
481638
Cable, Control (Throttle, Choke)
Switch, Seat
10 481183
11 481805
12 481184
13 423544
14 42413
Gauge, Water Temperature
Gauge, Oil Pressure
Gauge, Volts
Panel, Instrument Panel
Bracket, Fuse Holder
15 04010-11 Screw, #10-32 x 1.5” Phillips
16 04021-01 Nut, #10-32 Elastic Stop
17 48297
18 48298
19 483057
Fuse Holder w/ 20 Amp Fuse
Fuse, 20 Amp
Harness, Wiring
20 04010-01 Screw, #10-32 x .5” Phillips
21 04020-01 Nut, Hex #10-32
22 04031-01 Lock Washer #10
23 483013
Relay
24 04001-01 Bolt, Hex Head 1/4-20 x .75”
25 04030-02 Lock Washer 1/4”
26 451081
Base, Instrument Panel
27 04110-01 U-Nut, 1/4-20
28 48017-02 Key & Ring Assembly
29 481791
30 481812
31 481811
32 481813
33 481919
Sender Unit, Water Temperature
Switch, Low Oil Pressure
Sender Unit, Oil Pressure
Manifold, Oil
Hose, Oil Pressure Sender
34 04002-17 Bolt, Hex Head M8-1.25 x 14
35 483072 Hour Meter
36 48030-09 Clamp, Cable .5” ID
48030-10 Clamp, Cable .75” ID
37 481335
Boot, Positive Battery Terminal
38 04031-03 Washer, Star
39 481182
40 482361
41 481826
42 482365
43 481824
481089
Indicator Light, Glow Plugs
Indicator Light, Water Separator
Relay, 40 Amp
Fitting, Oil Sender - 45 Degree
Fuse, 40 Amp
Fuse Holder (Not Shown)
57
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HYDRAULIC PUMP ASSEMBLY - BDP-21L
26
25
16
28
24
Overhaul Seal Kit
27
23
25
21
22
1
15
19
20
3
17
3
18
2
14
12
5
11
13
11
6
8
10
7
4
9
STT 2K BDP-21
58
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HYDRAULIC PUMP ASSEMBLY - BDP-21L
Ref. Part
No. No.
Description
1
HG 2510065
Housing Kit (Includes Housing, Journal Bearing)
2
3
HG 2510066
HG 50641
End Cap
Straight Headless Pin
4
HG 50633
Socket Head Screw
5
HG 50381
End Cap Gasket
6
7
HG 2510071
HG 50406
Charge Pump Kit (Includes Charge Cover, Gerotor Assy., O-Ring)
Gerotor Assembly
8
9
HG 9004100-1430
HG 70402
O-Ring
Charge Relief Valve Kit
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
HG 9007200-3116
HG 2510027
HG 2513030
HG 50619
HG 70080
HG 50574
HG 2510073
HG 50552
HG 50203
HG 2000014
HG 2000015
HG 2000025
HG 2000037
HG 50601
HG 2000032
HG 2000038
HG 51092
Socket Head Screw
Check Valve Kit (Includes Check Plug, Spring, O-Ring, Orifice Check Valve)
Bypass Valve Kit (Includes Bypass Valve, O-Ring, Back-up Ring)
Valve Plate
Cylinder Block Kit
Trunion Seal Retaining Ring
Overhaul Kit
Roller Thrust Bearing
Swash Plate
Trunnion Arm
Guide Slot
Block Spring
Lip Seal
Pump Shaft
Ball Bearing
Retaining Ring
Lip Seal
Retaining Ring
Spacer
HG 2000038
HG 2000023
59
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WIRE HARNESS, STT - 31BSD
PART NUMBER 483057
60
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REPLACEMENT DECALS AND INFORMATION PLATES
481955 - 61A
481956 - 71A
482285
482286
48656
482290
FORWARD
48404
Hea Duty
R
vy-
F
REVERSE
Comm rc
ial
e
481971
481568
481971
WARNING
INSTALL BELT COVER BEFORE
OPERATING MACHINE
READ OPERATOR'S MANUAL
481039
481039
482360
482528
482580
482565
482493
2004 STT-31BSD Decals
61
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REPLACEMENT DECALS AND INFORMATION PLATES
482367
48825
481937
48314
482165
R
482581
481921
482581
481925
482834
481663
481664
483154
2005 STT-31BSD Decals 2
62
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LIMITED WARRANTY - COMMERCIAL EQUIPMENT
Any part of the Scag commercial mower manufactured by Scag Power Equipment and found, in the reasonable judgment
of Scag, to be defective in materials or workmanship, will be repaired or replaced by anAuthorized Scag Service Dealer
without charge for parts and labor. This warranty is limited to the original purchaser and is not transferable. Proof of
purchase will be required by the dealer to substantiate any warranty claims. All warranty work must be performed by an
Authorized Scag Service Dealer.
This warranty is limited to the following specified periods from the date of the original retail purchase for defects in
materials or workmanship:
* Wear items including drive belts, blades, hydraulic hoses and tires are warranted for ninety (90) days.
* Batteries are covered for ninety (90) days.
* Frame and structural components including oil reservoir, fittings, and oil coolers are warranted for 2 years
(Parts and labor 1st year; Parts only 2nd year).
* Cutter decks are warranted against cracking for a period of three (3) years. (Parts and labor 1st year; Parts
only 2nd and 3rd year) The repair or replacement of the cutter deck will be at the option of Scag Power
Equipment. We reserve the right to request components for evaluation. This warranty does not cover any
mower that has been subject to misuse, neglect, negligence, or accident, or that has been operated in any way
contrary to the operating instructions as specified in the Operator’s Manual.
* Engines and electric starters are covered by the engine manufacturer’s warranty period.
* Major drive system components are warranted for two (2) years by Scag Power Equipment. (Parts and labor 1st
year; Parts only 2nd year) (Two year warranty exclude fittings, hoses, drive belts). The repair or replacement of
the hydraulic pump or hydraulic motor will be at the option of Scag Power Equipment. This warranty does not
cover any mower that has been subject to misuse, neglect, negligence, or accident, or that has been operated in
any way contrary to the operating instructions as specified in the Operator’s Manual.
* Electric clutches have a Limited Warranty for 2 year (Parts and labor 1st year; Parts only 2nd year).
* Cutter Spindle Assemblies 46631 have a Limited Warranty for three years (Parts and labor 1st year; Parts
only 2nd and 3rd year).
* Any Scag product used for rental purposes is covered by a 90 day warranty.
The Scag mower, including any defective part must be returned to an Authorized Scag Service Dealer within the warranty
period. The expense of delivering the mower to the dealer for warranty work and the expense of returning it to the owner
after repair will be paid for by the owner. Scag’s responsibility is limited to making the required repairs and no claim of
breach of warranty shall be cause for cancellation or rescission of the contract of sale of any Scag mower.
This warranty does not cover any mower that has been subject to misuse, neglect, negligence, or accident, or that has
been operated in any way contrary to the operating instructions as specified in the Operator’s Manual. The warranty
does not apply to any damage to the mower that is the result of improper maintenance, or to any mower or parts that have
not been assembled or installed as specified in the Operator’s Manual and Assembly Manual. The warranty does not
cover any mower that has been altered or modified, changing performance or durability. In addition, the warranty does not
extend to repairs made necessary by normal wear, or by the use of parts or accessories which, in the reasonable judgment
of Scag, are either incompatible with the Scag mower or adversely affect its operation, performance or durability.
Scag Power Equipment reserves the right to change or improve the design of any mower without assuming any obliga-
tion to modify any mower previously manufactured.All other implied warranties are limited in duration to the two (2) year
warranty period or ninety (90) days for mowers used for rental purpose. Accordingly, any such implied warranties
including merchantability, fitness for a particular purpose, or otherwise, are disclaimed in their entirety after the expiration
of the appropriate two year or ninety day warranty period. Scag’s obligation under this warranty is strictly and exclusively
limited to the repair or replacement of defective parts and Scag does not assume or authorize anyone to assume for them
any other obligation. Some states do not allow limitations on how long an implied warranty lasts, so the above limitation
may not apply to you.
Scag assumes no responsibility for incidental, consequential or other damages including, but not limited to, expense for
gasoline, expense of delivering the mower to an Authorized Scag Service Dealer and expense of returning it to the owner,
mechanic’s travel time, telephone or telegram charges, rental of a like product during the time warranty repairs are being
performed, travel, loss or damage to personal property, loss of revenue, loss of use of the mower, loss of time or inconve-
nience. Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limita-
tion or exclusion may not apply to you. This warranty gives you specific legal rights, and you may also have other rights
which vary from state to state.
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