Safety Instructions & Operator’s Manual for
21” STEEL DECK
WALK MOWERS
COMMERCIAL MODEL
SERIES 17
PROPELLED
MODELS
CP216017RV
CP215017KWV
CP215017HV
CP215517HV
MODEL NUMBER EXPLANATION
C
P
21
60
17
R
V
MODEL DESIGNATION
SELF-PROPELLED
CUTTING WIDTH
ENGINE OPTIONS
ENGINE TYPE
SERIES DESIGNATION
ENGINE HORSE POWER
C – Commercial Model
P – Self Propelled Model
21 – 21” Cutting Width
50 = 5.0 HP (Engine Horse Power) 55 - 5.5 HP (Engine Horse Power)
60 = 6.0 HP (Engine Horse Power)
17 -- Series Designation
R – Robin Engine
V – Over Head Valve Engine
H - Honda Engine
KW - Kawasaki Engine
Thank you for buying a SNAPPER Product! Before operating your Walk Behind, read this manual carefully and pay
particular attention to the “IMPORTANT SAFETY INSTRUCTIONS” on Pages 2 & 3. Remember that all power equipment
can be dangerous if used improperly. Also keep in mind that SAFETY requires careful use in accordance with the
operating instructions and common sense.
COPYRIGHT © 2002
SNAPPER INC.
ALL RIGHTS RESERVED
MANUAL No. 7-4932 (I.R. 6/07/02)
IMPORTANT SAFETY INSTRUCTIONS
OPERATION
MAINTENANCE AND STORAGE
1. DO NOT put hands or feet near or under rotating
parts. Keep clear of discharge area while engine
is running.
1. DO NOT store mower or fuel container inside
where fumes may reach an open flame, spark or
pilot light such as in a water heater, furnace,
clothes dryer or other gas appliance. Allow
engine to cool before storing machine in an
enclosure. Store fuel container out of reach of
2. STOP engine when crossing gravel drives,
walks, or roads, and under any conditions where
thrown objects might be a hazard.
3. Mow only in daylight or good artificial light.
4. DO NOT operate mower while under the
influence of alcohol or drugs.
children in
building.
a
well ventilated, unoccupied
2. Keep mower and engine free of grass, leaves or
excess grease to reduce fire hazard and engine
overheating.
5. After striking a foreign object or if mower
vibrates
abnormally,
STOP
the
engine,
disconnect and secure spark plug wire. Inspect
the mower for any damage and repair the
damage.
3. When draining fuel tank, drain fuel into an
approved container outdoors and away from
open flame.
6. DO NOT mow near drop offs, ditches or
embankments. Operator could lose footing or
balance.
4. Keep all bolts, especially blade bolts, nuts and
screws properly tight. Check that all cotter pins
are in proper position.
7. STAY ALERT for holes and other hidden hazards.
Tall grass can hide obstacles. Keep away from
ditches, washouts, culverts, fences and
protruding objects.
5. Always provide adequate ventilation when
running engine. Engine exhaust gases contain
carbon monoxide, a deadly poison.
6. Service engine and make adjustments only when
engine is stopped. Removed spark plug wire
from spark plug and secure wire away from
spark plug to prevent accidental starting.
7. DO NOT change engine governor speed settings
or overspeed engine.
8. Check grass bag assembly frequently for wear or
deterioration to avoid thrown objects and
exposure to moving parts. Replace with new bag
if loose seams or tears are evident. Replace
slider or bag adapter if broken or cracked.
9. Mower blades are sharp and can cut. Wrap the
blades or wear heavy leather gloves and use
CAUTION when handling them.
10. DO NOT test for spark by grounding spark plug
next to spark plug hole; spark plug could ignite
gas exiting engine.
11. Have machine serviced by an authorized
SNAPPER dealer at least once a year and have
the dealer install any new safety devices.
12. Use only genuine SNAPPER replacement parts to
assure that original standards are maintained.
8. DO NOT mow on wet grass. Always be sure of
your footing. Keep a firm hold on the handle and
walk, never run. Slipping could cause injury.
9. DO NOT leave the machine with the engine
running. STOP BLADE and STOP ENGINE before
leaving the operators position for any reason.
10. Before cleaning, repairing or inspecting make
certain engine, blade and all moving parts have
STOPPED. Disconnect and secure spark plug
wire away from plug to prevent accidental
starting.
11. STOP engine and wait until the blade comes to
complete STOP before removing grass bag
and/or clearing grass.
12. DO NOT operate mower without the entire grass
catcher or guards in place. DO NOT point
discharge at people, passing cars, windows or
doors.
13. Slow down before turning.
14. Watch out for traffic when near or crossing
roadways.
15. DO NOT operate engine in enclosed areas.
Engine exhaust gases contain carbon monoxide,
a deadly poison.
3
TABLE OF CONTENTS
IMPORTANT SAFETY INSTRUCTIONS ........................................................................ 2-3
TABLE OF CONTENTS ..................................................................................................... 4
SECTION 1 - FAMILIARIZATION ...................................................................................... 5
SECTION 2 - OPERATING INSTRUCTIONS ................................................................. 6-9
Pre-start Checklist ............................................................................................... 6
Starting & Stopping Engine & Blade............................................................... 6-7
Starting & Stopping Wheel Drive ....................................................................... 7
Handle Height Adjustment.................................................................................. 8
Cutting Height Adjustment ................................................................................ .8
Recycling Operation............................................................................................ 9
Installation of Grass Catcher.............................................................................. 9
Removing and Dumping Grass Catcher............................................................ 9
SECTION 3 - MAINTENANCE INSTRUCTIONS ........................................................ 10-12
Change Engine Oil........................................................................................ 10-11
Check Transmission Grease............................................................................. 11
Check Mower Blade........................................................................................... 11
Check Engine Drive Belt ................................................................................... 12
Check Transmission Poly-V Belt...................................................................... 12
Service – Annually ............................................................................................. 12
Engine.............................................................................................................. 12
Air Filter ........................................................................................................... 12
Engine Oil........................................................................................................ 12
Storage Procedure............................................................................................. 12
SECTION 4 - ADJUSTMENTS AND REPAIR............................................................. 13-19
Mower Blade Replacement ............................................................................... 13
Blade Sharpening .............................................................................................. 13
Wheel Drive Control Adjustment...................................................................... 14
Driven and Drive Disc Service..................................................................... 14-19
Cleaning Drive Disc and Driven Disc....................................................... 14-15
Drive Spring Repair/Replacement................................................................. 15
Driven Disc Adjustment ............................................................................ 15-16
Driven Disc Replacement.......................................................................... 16-17
Driven Disc Bearing Replacement................................................................ 17
Hex Shaft Bearing Replacement ................................................................... 18
Belt Service ................................................................................................... 18-19
Engine Drive Belt Replacement ............................................................... 18-19
Transmission Poly-V Belt Replacement....................................................... 19
TROUBLESHOOTING ..................................................................................................... 20
SERVICE SCHEDULE...................................................................................................... 21
Maintenance/Replacement Parts...................................................................... 21
WARRANTY ..................................................................................................................... 22
PRIMARY MAINTENANCE......................................................................................... 23-26
PRODUCT REGISTRATION FORM ................................................................................ 27
IMPORTANT
The figures and illustrations in this manual are provided for reference only and may differ from your
specific model. Contact your Snapper dealer if you have questions.
4
Section 1 - FAMILIARIZATION
ENGINE
SPEED
CONTROL
ENGINE SPEED
CONTROL
WHEEL DRIVE
CONTROL
BLADE
CONTROL
GROUND SPEED
CONTROL
“CHOKE
”
“FAST”
ROPE
START
HANDLE
SLOW
FUEL FILLER
CAP
GRASS
BAG
FUEL VALVE
(HIDDEN IN THIS VIEW)
REAR HEIGHT
ADJUSTMENT
LATCH
GRASS BAG
ADAPTER
FRONT HEIGHT
ADJUSTING
LATCHES
FIGURE 1.1
1.1 INTRODUCTION
1.2 NOMENCLATURE
This manual has been prepared for the operators of
the SNAPPER WALK BEHIND MOWERS. Its
purpose, aside from recommending operating and
routine service requirements, is to promote safety
through the use of accepted operating practices.
Read, Understand and Follow the “IMPORTANT
SAFETY INSTRUCTIONS” on Pages 2 & 3 of this
manual and all safety messages on the mower and
attachments before operating the mower.
The nomenclature drawing above, Figure 1.1,
shows the essential parts of the SNAPPER WALK
BEHIND MOWERS. It is recommended that all
operators of the mower become thoroughly familiar
with the controls, parts and operation of the mower
before operating. Specific details involving the
engine are found in the separate engine owner’s
manual. Study these manuals before operating and
keep both handy for future reference.
5
Section 2 - OPERATING INSTRUCTIONS
2.1 PRE-START CHECK LIST
2.1.6. Clean exterior surfaces of cutting deck and
Make the following checks and perform the service
required before each start-up.
2.1.1. Check guards, deflectors, grass bag, adapter
and covers to make sure all are in place and securely
tightened.
engine of any accumulation of spilled fuel, dirt,
grass, oil, etc. Keep engine air intake screen and
cooling fins clear at all times.
2.2 STARTING & OPERATION
2.2.1. ENGINE & BLADE
2.1.2. Check blade control and wheel drive control
to insure they work freely. See Figure 2.1.
1. Turn fuel valve to on. See Figure 2.4. Move
engine speed control to the “choke” position. The
choke should not be required to restart a hot
engine. See Figure 2.3.
WHEEL DRIVE
BLADE
CONTROL
CONTROL
NOTE: Stop the engine (and blade) by releasing the
blade control.
WHEEL DRIVE
CONTROL
BLADE
CONTROL
FIGURE 2.1
ENGINE SPEED CONTROL
(SHOWN IN CHOKE POSITION)
2.1.3. Check cutting height. Adjust to desired
height.
2.1.4. Check engine oil and add oil as needed to
bring level up to the full mark. Refer to Engine Owner’s
Manual for oil specifications. See Figure 2.2.
FIGURE 2.3
2. Pull blade control against handle.
3. Pull rope start handle to crank engine.
4. After engine starts, move engine speed control
away from the choke position to the “Fast” (Rabbit)
position. See Figure 2.3.
5. Allow a brief warm-up until engine runs smooth.
FULL MARK
(DO NOT OVER FILL)
FIGURE 2.2
2.1.5. Add fuel to tank after pushing the mower
outside where fumes can safely dissipate. Make
sure cap is tightened after refueling. Refer to
Engine Owners Manual for specifications.
6
Section 2 - OPERATING INSTRUCTIONS
2.2 STARTING & OPERATION
2.2.1. ENGINE & BLADE
(Choke Models)
1. Move fuel shut off valve to the “ON” position. See
Figure 2.4.
NOTE: Stop the engine (and blade) by releasing the
blade control.
MOVE TO
CHOKE
POSITION
HONDA
FUEL SHUT OFF VALVE
SHOWN IN THE “ON”
POSITION
ENGINE
SPEED
CONTROL
FIGURE 2.5
MOVE GROUND
SPEED CONTROL
TO DESIRED
KAWASAKI
MOVE CONTROL
AGAINST HANDLE TO
ENGAGE WHEEL DRIVE
POSITION
WHEEL DRIVE
CONTROL
BLADE
CONTROL
FUEL SHUT OFF VALVE
SHOWN IN THE “ON”
POSITION
(FAST)
SIXTH SPEED
POSITION
SIXTH
FIRST
(SLOW)
FIRST SPEED
POSITION
FIGURE 2.4
2. Move engine speed control to the “Choke”
position. See Figure 2.5.
3. Pull blade control against handle.
4. Pull rope start handle to crank engine.
5. After engine starts, allow a brief warm-up until
engine runs smooth.
FIGURE 2.6
2.2.2. PROPELLING MOWER
(Self Propelled Models)
1. Move ground speed control to the desired
speed position. See Figure 2.6.
2. Move wheel drive control against handle to
engage wheel drive and propel mower forward.
Forward speed can be adjusted while the mower is
moving by changing position of the ground speed
control. See Figure 2.6.
2.3 STOPPING
Stop engine and blade by releasing the blade
control. Stop forward motion of mower by releasing
the wheel drive control.
7
Section 2 - OPERATING INSTRUCTIONS
2.4 HANDLE HEIGHT ADJUSTMENT
The height of the mower handle can be adjusted
as follows:
2. Set all wheels at the same cutting height. The
highest cutting position is Notch 6. The lowest
cutting position is Notch 1. See Figure 2.9.
1. Loosen the nuts on each lower handle as
shown in Figure 2.7.
HIGHER
LATCH
POSITION
LOWER
HANDLE
LOWER
CUTTING HEIGHT SETTINGS
FIGURE 2.9
LOOSEN LOWER
NUTS ON EACH
LOWER HANDLE
FIGURE 2.7
IMPORTANT! Some models are equipped with braces
that attach to the lower handle brackets and must be
loosened before handle height can be adjusted.
2. Move upper mower handle up or down until the
desired position is achieved.
3. Tighten the lower nuts on each lower handle to
maintain desired position.
WARNING
STOP engine and mower blade by releasing the
blade control before adjusting cutting height or
handle height.
2.5 CUTTING HEIGHT ADJUSTMENT
1. Pull the height adjusting latch outward and
move to desired cutting height. See Figure 2.8.
LOWEST CUTTING
1
LATCH
HEIGHT
1
2
3
4
HIGHEST
CUTTING
HEIGHT
5
6
6
FIGURE 2.8
8
Section 2 - OPERATING INSTRUCTIONS
WARNING
HOOK BAG HANDLE
OVER LOWER
HANDLES
DO NOT attempt any maintenance, adjustments or
service with engine and blade running. STOP
engine and blade. Disconnect spark plug wire and
secure away from spark plug. Engine and
components are HOT. Avoid serious burns, allow
sufficient time for all components to cool. Wear
heavy leather gloves when handling or working
around cutting blades. Blades are extremely sharp
and can cause severe injury.
2.6 RECYCLING OPERATION - OPTIONAL
ACCESSORY
Recycling operation requires optional accessory.
SLIDE CONNECTOR
OVER END OF
ADAPTER FLANGE
NOTE: For best recycling results, cut up to a maximum
of 1/3 of grass blade length and recycle ONLY when
grass is dry.
FIGURE 2.11
1. Set all wheels in the highest cutting position
(Notch 6).
WARNING
2. Move engine speed control to “FAST” (Rabbit)
position.
3. Move ground speed control to slowest speed
setting.
4. Proceed mowing slowly. If grass is very dense,
lower each rear wheel latch one notch lower than
the front wheel latches to improve recycling
performance.
DO NOT operate without entire Grass Catcher or
guard in place. Grass Catcher components are
subject to deterioration during normal use. Inspect
frequently and replace worn or damaged
components immediately.
2.8 REMOVING and DUMPING GRASS CATCHER
1. Grasp bag connector and bag handle as
shown. See Figure 2.10.
2.7 INSTALLATION of GRASS CATCHER
2. First, lift up on bag handle, removing it from the
mower handle. Then lift up on bag connector
removing it from the adapter flange.
3. Dump bag by pulling bag slider off of Z-Fold at
rear of bag, opening bag.
Position grass bag between handles. See Figure
2.10. Install grass catcher by sliding connector
over flange of adapter. Attach grass bag hooks
over middle handle cross bar. See Figure 2.11.
4. To close bag, fold rear of bag into Z-shape,
keeping edges aligned. Note: an illustration of
folding the Z-shape is attached to the bag.
5. Grasp the edge of the Z-fold, and while holding
the slider; pull the Z-fold fully into the slider. See
Figure 2.12.
LOWER HANDLES
HANDLE
BAG CONNECTOR
GRASP SLIDER. PULL Z-
FOLD INTO SLIDER
PULL
ADAPTER
FLANGE
FIGURE 2.10
FIGURE 2.12
9
Section 3 - MAINTENANCE
3.1 INTRODUCTION
To retain the quality of the mower, use genuine
SNAPPER replacement parts only. Contact a local
SNAPPER dealer for parts and service assistance.
For the correct part or information for a particular
mower, always mention model and serial number.
3.2 SERVICE - AFTER FIRST 5 HOURS
3.2.1. CHANGE ENGINE OIL
WARNING
DO NOT attempt any maintenance, adjustments or
service with engine and blade running. STOP
engine and blade. Disconnect spark plug wire and
secure away from spark plug. Engine and
components are HOT. Avoid serious burns, allow
sufficient time for all components to cool. Wear
heavy leather gloves when handling or working
around cutting blades. Blades are extremely sharp
and can cause severe injury.
FIGURE 3.1A
IMPORTANT: Drain fuel tank before tipping machine.
DO NOT tip machine with carburetor or spark plug down.
Oil from crankcase will saturate the air filter and cause
the engine to be hard to start or not start at all. If
contamination does occur, the air filter will have to be
replaced.
ROBIN ENGINE
1. Refer to Engine Manual for proper oil
specifications, procedures and proper service
intervals.
2. For simplest/cleanest oil change, loosen lower
handle nuts. Remove two of the four bolts and fold
handles. Stand mower up on lower handle
brackets as shown in Figure 3.1A. Drain oil
through dipstick tube into a container. Allow
sufficient time for all oil to drain.
OIL DRAIN
PLUG
OIL FILTER
FIGURE 3.1B
KAWASAKI ENGINE
3. Alternate Oil Drain: Procedure: The
Kawasaki, Robin and Honda engines are equipped
with oil drain plugs located above the deck on the
right side of the engine. See Figure 3.1.B, Figure
3.1.C and Figure 3.1D. Remove oil drain plug to
drain oil. Allow sufficient time for all oil to drain.
Reinstall plug and tighten securely.
4. Dispose of drain oil properly.
5. Fill engine with oil as specified in Engine
Manual. Do Not overfill.
6. Robin 4-Cycle engines are equipped with an oil
filter. Refer to Engine Manual for correct replacement
intervals.
NOTE: Check specific model engine owner’s
manual for changing engine oil procedure and oil
specifications.
OIL DRAIN
PLUG
FIGURE 3.1C
(Continued On Next Page)
10
Section 3 – MAINTENANCE
2. Look into plug hole. If liquid grease IS NOT
visible on the input gear (the small gear below the
plug hole), add an amount, to cover gear, of
Snapper “00” grease. See Figure 3.2.
WARNING
DO NOT attempt any maintenance, adjustments or
service with engine and blade running. STOP
engine and blade. Disconnect spark plug wire and
secure away from spark plug. Engine and
components are HOT. Avoid serious burns, allow
sufficient time for all components to cool. Wear
heavy leather gloves when handling or working
around cutting blades. Blades are extremely sharp
and can cause severe injury.
NOTE: Snapper “00” Grease (Part No. 2-9443) is
available at your SNAPPER dealer. Do not spill grease or
oil on surface of drive disc. See Figure 3.3.
3. Reinstall transmission plug.
4. Check grease level after each 25 hours of
operation.
3.2 SERVICE - AFTER FIRST 5 HOURS
3.2.1. CHANGE ENGINE OIL
(Continued From Previous Page)
HONDA ENGINE
KEEP DRIVE
DISC CLEAN !
OIL DRAIN
PLUG
FIGURE 3.1D
FIGURE 3.3
3.2.2. CHECK GREASE LEVEL IN TRANSMISSION
3.2.3. CHECK MOWER BLADE
1. Disconnect spark plug wire and secure end
away from plug.
1. Roll machine and remove transmission fill plug.
See Figure 3.2.
2. Tilt mower up on its rear wheels for access to
the blade cap screw. Do not tilt mower with spark
plug or carburetor down. See Figure 3.4.
3. Check torque of blade retaining cap screw.
Recommended torque should be 40 ft. lbs. See
Figure 3.4.
FILL PLUG
4. Check blade for sharpness, wear and damage.
Refer to Section “Blade Wear Limits”.
FIGURE 3.2
11
Section 3 - MAINTENANCE
3.4 STORAGE PROCEDURE
WARNING
Refer to the Engine Owner’s Manual for directions
regarding engine storage preparations. Prepare the
mower for “end of season” storage as follows:
DO NOT attempt any maintenance, adjustments or
service with engine and blade running. STOP engine
and blade. Disconnect spark plug wire and secure
away from spark plug. Engine and components are
HOT. Avoid serious burns, allow sufficient time for
all components to cool. Wear heavy leather gloves
when handling or working around cutting blades.
Blades are extremely sharp and can cause severe
injury.
1. Drain fuel from fuel tank and let engine run until
all fuel is out of the carburetor.
2. Disconnect and remove the spark plug wire
away from spark plug before any other
preparations are made!
3. Tape all openings closed to prevent spraying
water into exhaust or air intakes during washing.
4. Tilt mower up on its rear wheels and thoroughly
clean the underside of the deck. Do not tilt mower
with spark plug or carburetor down. Scrape away
any accumulation of grass with a putty knife and or
wire brush.
3.2.4. CHECK ENGINE DRIVE BELT
1. Visually check engine drive belt for cracking,
fraying, severed or belt strands exposed. If worn or
damaged, replace belt before operating mower.
5. Lubricate all exposed metal with a light coating
of oil to prevent corrosion.
6. Store the mower in a shed or other dry area,
protected from weather.
3.2.5. CHECK TRANSMISSION POLY-V BELT
1. Visually check Poly-V belt for cracking, fraying,
severed or belt strands exposed. If worn or
damaged, replace belt before operating mower.
RECOMMENDED
BLADE RETAINING
CAP SCREW
TORQUE VALUE
SHOULD BE 40 FT.
FIGURE 3.4
3.3 SERVICE - ANNUALLY
Perform all maintenance as described in the “Service
Schedule” section of this manual.
3.3.1. Engine
Service engine according to engine owner’s
manual.
3.3.2. Air Filter
Refer to engine owner’s manual for service
instructions.
3.3.3. Engine Oil
Refer to engine owner’s manual for service
instructions.
12
Section 4 - REPAIR & ADJUSTMENTS
MAKE SURE THAT
BLADE HUB IS
SEATED
BETWEEN
FLANGES
WARNING
DO NOT attempt any maintenance, adjustments or
service with engine and blade running. STOP
engine and blade. Disconnect spark plug wire and
secure away from spark plug. Engine and
components are HOT. Avoid serious burns, allow
sufficient time for all components to cool. Wear
heavy leather gloves when handling or working
around cutting blades. Blades are extremely sharp
and can cause severe injury.
BLADE
HUB
FLANGE
BLADE
4.1 MOWER BLADE REPLACEMENT
4.1.1. STANDARD BLADE WEAR LIMIT
1. Inspect blade frequently for signs of excessive
wear or damage. See Figure 4.1.
CONE WASHER
(Concave Side Up)
CAPSCREW
NEW BLADE
FIGURE 4.2
WEAR LIMIT
(NOTCH STARTS)
4. Sharpen blade on a grinding wheel at an angle
of 22 to 28 degrees. DO NOT sharpen blade
beyond original cutting edge. See Figure 4.3.
DANGEROUS
CONDITION !
DO NOT USE ON
MOWER !
REPLACE WITH NEW
BLADE.
DO NOT SHARPEN
BEYOND ORIGINAL
CUTTING EDGE
22-28º
BLADE TIP
END VIEW OF
BLADE ASSEMBLY
FIGURE 4.1
ORIGINAL CUTTING EDGE
2. Replace the blade if it is badly chipped, bent,
noticeably out of balance or has cracks or notch in
either tip. See Figure 4.1. Replace with new blade.
FIGURE 4.3
5. Check blade for balance. If necessary, correct
balance by grinding heavy end of blade.
6. Reinstall blade. See Figure 4.2. Check torque
of blade retaining cap screw. Recommended
torque should be 30 to 40 ft. lbs.
WARNING
DO NOT use a cutting blade that shows signs of
excessive wear or damage. Refer to Section
“MOWER BLADE REPLACEMENT” for proper blade
inspection and service procedures.
4.1.2. BLADE SHARPENING
1. Disconnect spark plug wire and secure end
away from plug.
2. Tilt mower up on its rear wheels. Do not tilt
mower with spark plug or carburetor down.
3. Remove blade. See Figure 4.2.
13
Section 4 - REPAIR & ADJUSTMENTS
4. If the wheel drive control fails to return quickly to
WARNING
the “OFF” position when released, check for
binding at the cable clips located on the side of the
right handle. The upper clip should be located 2”
below the upper bolt; the lower clip should be 4”
above the lower bolt. The cable should slide freely
with the clips installed at these locations.
DO NOT attempt any maintenance, adjustments or
service with engine and blade running. STOP
engine and blade. Disconnect spark plug wire and
secure away from spark plug. Engine and
components are HOT. Avoid serious burns, allow
sufficient time for all components to cool. Wear
heavy leather gloves when handling or working
around cutting blades. Blades are extremely sharp
and can cause severe injury.
4.3 DRIVEN DISC SERVICE
If the mower does not propel itself properly, See
Figure 4.5. Check for the following problems:
DRIVEN DISC &
RUBBER RING
NOTE: The following sections 4.2 through
4.4 are for self-propelled models only.
POLY-V-BELT
DRIVE
SPRING
4.2 WHEEL DRIVE CONTROL ADJUSTMENT
1. The wheel drive control is properly adjusted
when there is 1/16” to 1/8” clearance between the
inside of the spring hook and the inside of the
clutch cable eye with the wheel drive control
released. See Figure 4.4.
DRIVE
DISC
CLUTCH CABLE
VINYL SPRING
ENGINE
DRIVE
BELT
1/16” TO 1/8”
CLEARANCE
CLUTCH CABLE
EYE
UPPER
SPRING
FIGURE 4.5
SPRING HOOK
LOWER
SPRING
1. Grease on drive disc causing slippage.
2. Broken or disconnected drive spring.
3. Driven disc is out of adjustment.
4. Driven disc rubber ring is worn – does not
contact drive disc properly.
5. Worn Poly-V Belt or engine drive belt.
CABLE
CLUTCH CABLE EYE
NOTE: If any of the above (1 thru 5) are causing
problems, service as follows:
SPRING
(Continued on next page)
FIGURE 4.4
2. To adjust, unhook upper spring from cable eye
and rotate spring in direction required to extend or
shorten spring length.
3. Rehook upper spring to cable eye and check
clearance. Repeat procedure if required.
NOTE: The vinyl spring cover should be kept over the
spring at all times except for adjustments.
14
Section 4 - REPAIR & ADJUSTMENTS
4.3.3. DRIVEN DISC ADJUSTMENT
WARNING
If the drive disc and driven disc are clean and the
mower drive is still slipping, adjust the driven disc
as follows:
1. Place ground speed control in the number six
speed position. See Figure 4.7.
DO NOT attempt any maintenance, adjustments or
service with engine and blade running. STOP
engine and blade. Disconnect spark plug wire and
secure away from spark plug. Engine and
components are HOT. Avoid serious burns, allow
sufficient time for all components to cool.
MOVE GROUND
SPEED CONTROL
TO SIXTH
4.3.1. Cleaning Drive Disc & Driven Disc.
If oil or grease on the drive disc or driven disc is
causing slippage, clean discs as follows:
1. Wipe away any oil or grease with a clean cloth.
2. Use either an approved grease solvent or hot,
soapy water to clean drive disc or driven disc.
3. Rinse components with clean water.
SIXTH
FIRST
4. Dry components with a clean cloth.
4.3.2. Drive Spring Repair/Replacement
If drive spring is loose, reconnect as shown in
Figure 4.6. If spring is broken, replace with new
spring.
IMPORTANT: If machine drive system continues
slipping see Trouble Shooting section.
FIGURE 4.7
USE NEEDLE NOSE
PLIERS TO INSTALL
DRIVE SPRING
2. Remove driven disc spring from driven disc
assembly. Remove transfer rod connector nut and
remove ball joint/transfer rod from driven disc
assembly anchor point. See Figure 4.8.
DRIVEN DISC
ASSEMBLY
DRIVE
DISC
DRIVE
SPRING
DRIVEN DISC
SPRING
BALL JOINT
ANCHOR
POINT
TRANSFER ROD
CONNECTOR
NUT
FIGURE 4.6
FIGURE 4.8
(Continued On Next Page)
15
Section 4 - REPAIR & ADJUSTMENTS
4.3.4. Replacing Driven Disc Rubber Ring
WARNING
If the rubber ring is badly chunked or worn down to
within 1/16” of the metal rim of the driven disc hub,
it must be replaced. Install new rubber ring as
follows:
1. Using a small flat blade screwdriver, free the
clip from the transfer rod. Then remove the
transfer rod from the clip and the speed control rod.
See Figure 4.10.
DO NOT attempt any maintenance, adjustments or
service with engine and blade running. STOP
engine and blade. Disconnect spark plug wire and
secure away from spark plug. Engine and
components are HOT. Avoid serious burns, allow
sufficient time for all components to cool.
3. Slide driven disc assembly over to 1/8” from
outside edge of drive disc. Maintaining the 1/8”
measurement, remove any misalignment from the
transfer rod linkage and the driven disc assembly
anchor point. This can be done by loosening nut and
rotating the transfer rod ball joint clockwise on the
transfer rod until alignment with the driven disc
assembly anchor point is achieved. Retighten ball
joint nut. Insert ball joint into anchor point and reinstall
the connector hex nut and tighten securely. See
Figure 4.9. Move ground speed control to the first
speed position, then back to the sixth speed position.
Recheck the 1/8” measurement described previously.
Reinstall driven disc spring to driven disc assembly.
CONNECTOR
CLIP
TRANSFER
ROD
SPEED
CONTROL
ROD
1/8” MEASUREMENT TO
OUTSIDE EDGE OF DRIVE
REINSTALLED CLIP
AND TRANSFER ROD
SLIDE DRIVEN
DISC
DISC ASSEMBLY
DRIVE
TOWARD
DISC
OUTSIDE EDGE
CONNECTOR
CLIP
TRANSFER
ROD
TRANSFER
ROD
SPEED
CONTROL
ROD
CONNECTOR
HEX NUT
OUTSIDE
EDGE
FIGURE 4.10
ROTATE BALL JOINT
CLOCKWISE
FIGURE 4.9
16
Section 4 - REPAIR & ADJUSTMENTS
4.3.5. Replacing Bearing In Driven Disc
WARNING
If the driven disc bearing fails, remove the driven
disc assembly and replace bearing as follows:
1. Remove snap ring. See Figure 4.13.
DO NOT attempt any maintenance, adjustments or
service with engine and blade running. STOP
engine and blade. Disconnect spark plug wire and
secure away from spark plug. Engine and
components are HOT. Avoid serious burns, allow
sufficient time for all components to cool.
THRUST
SHIM
PLATE
WASHER
SNAP
RING
4.3.4. Replacing Driven Disc Rubber Ring
(Continued From Previous Page)
2. Using needle nose pliers, unhook the drive
spring and slide the driven disc assembly off the
hex shaft. See Figure 4.11.
3. Remove the five machine screws and plate,
which secure the rubber ring to the driven disc
hub. See Figure 4.12.
BEARING
REMOVE FOUR
MACHINE SCREWS
DRIVEN
DISC HUB
RUBBER
DISC
DRIVEN DISC
4. Install new rubber ring.
5. Reverse above procedures for reassembly and
installation.
PLATE
FIGURE 4.13
2. Slide the hub assembly out of the bearing.
3. Remove the four screws.
4. Remove bearing and replace with new bearing.
5. Reassemble components in reverse order.
DRIVEN DISC
ASSEMBLY
FIGURE 4.11
DRIVEN DISC HUB
MACHINE
SCREWS
RUBBER
RING
PLATE
FIGURE 4.12
17
Section 4 - REPAIR & ADJUSTMENTS
4.4. BELT SERVICE
WARNING
On these mowers, the engine belt transmits power
from engine to drive disc. The drive disc powers
the poly-v belt, which engages the transmission
that powers the rear wheels. Should these belts
become worn, they could cause slippage, which
would impair mower performance. The condition of
the engine belt and poly-v belt should be checked
after every 25 hours of mower operation.
DO NOT attempt any maintenance, adjustments or
service with engine and blade running. STOP
engine and blade. Disconnect spark plug wire and
secure away from spark plug. Engine and
components are HOT. Avoid serious burns, allow
sufficient time for all components to cool.
4.3.6. Replacement Of Bearing On Pulley End Of
Hex Shaft
To replace the bearing on the pulley end of the hex
shaft, proceed as follows:
1. Hold the hex shaft with an adjustable wrench
held next to the pulley.
2. Remove the 3/8” hex lock nut, which is located
on the outside of the right wheel bracket. See
Figure 4.14.
4.4.1. Engine Drive Belt Replacement
(Stretch Type Belts)
1. Empty the fuel tank.
2. Note the belt routing in Figure 4.15. There is no
idler pulley on these models to disconnect. See
Figure 4.15.
DRIVE BELT
ENGINE DRIVE
PULLEY
3. Remove holder, O-ring and bearing.
4. Install new bearing.
5. Carefully install new O-ring over the outside of the
new bearing.
6. Install bearing holder and secure with screws.
7. Install 3/8” hex lock nut.
DRIVE DISC
TOP VIEW OF STRETCH TYPE BELT ROUTING
BALL BEARING
FIGURE 4.15
“O” RING
3/8”
LOCK NUT
BALL BEARING
HOLDER
FIGURE 4.14
(Continued On Next Page)
18
Section 4 - REPAIR & ADJUSTMENTS
PULLEY POSITION
WARNING
DO NOT attempt any maintenance, adjustments or
service with engine and blade running. STOP
engine and blade. Disconnect spark plug wire and
DRIVE DISC
secure away from spark plug. Engine and
components are HOT. Avoid serious burns, allow
sufficient time for all components to cool.
SLOT IN END
OF DRIVE DISC
BOLT
BUSHING
4.4.1. Engine Drive Belt Replacement
(Stretch Type Belts)
DECK BRACKET
(PARTIALLY SHOWN)
(Continued From Previous Page)
BOLT RETAINER
IMPORTANT: Drain fuel tank before tipping machine.
DO NOT tip machine with carburetor or spark plug down.
Oil from crankcase will saturate the air filter and cause
the engine to be hard to start or not start at all. If
contamination does occur, the air filter will have to be
replaced.
INTERNAL TOOTH
LOCKWASHER
NUT
FIGURE 4.16
3. Remove the driven disc. Refer to Section
“Replacing Rubber Driven Disc Ring” for driven
disc assembly removal procedure.
4. Tilt mower up on its rear wheels and remove
blade and blade hub. Assistance from another
person may be necessary to hold mower in the
tilted position.
4.4.2. Transmission Poly-V Belt Replacement
1. Remove the driven disc. Refer to Section
Replacing Driven Disc Rubber Ring” for procedure.
2. Note the routing of the old belt around the three
pulleys before removing it. See Figure 4.17.
5. Hold the slotted end of the drive disc bolt with a
screwdriver and remove the nut and internal tooth
lock washer. See Figure 4.16.
6. Remove the belt cover located under deck.
7. Lift the drive disc up and remove worn belt.
8. Loop one end of new belt over engine pulley and
insert the other end through slot in deck. See
Figure 4.15.
IDLER
DIFFERENTIAL
PULLEY
BRACKET
DRIVE
PULLEY
POLY-V
BELT
HEX SHAFT
9. Loop the belt around the pulley on the bottom of
the drive disc.
10. Reinstall drive disc and retaining hardware.
IMPORTANT: 1) The square shoulder of the drive
disc bolt must fit into the square hole of the
bushing. 2) The square end of bushing must fit into
the bracket slot.
DRIVEN
PULLEY
BELT GUIDE
11. Reinstall belt cover and tighten bolts securely.
12. Reinstall blade hub and cutter blade.
Recommended torque for blade cap screw is
to 40 ft. lbs.
30
ROUTING OF POLY-V
FIGURE 4.17
3. Place new Poly-V Belt over end of hex shaft
and onto driven pulley.
4. Work belt onto top of idler pulley.
5. Twist belt sideways and pull it upward between
the differential bracket and drive pulley and then
down into the pulley groove. Make sure the Poly-V
Belt is above belt guide. See Figure 4.17.
19
TROUBLESHOOTING
PROBLEM
PROBABLE CAUSE
CORRECTIVE ACTION
1. Fill fuel tank with fresh fuel.
Engine Will Not Start 1. Fuel tank empty.
Using Recoil Starter 2. Engine needs choking or priming.
2. Choke/Prime. Check Engine Manual for
Instructions.
3. Spark plug wire disconnected.
3. Place spark plug wire onto spark plug.
4. Honda & Kawasaki Engines Only – Fuel Shut-Off in
the “OFF” position
Engine Stalls or Stops 1. Blade control is released or is not being held securely 1. Blade control should be held securely against
4. Turn Fuel Shut-Off to “ON” position
After Running
against handle.
handle at all times during operation of mower.
2. Choke control in the “CHOKE” position.
2. Move choke control to “OFF” position.
3. Fuel tank empty.
3. Fill with fuel to proper level.
4. Clean free of all debris.
4. Engine air pre-cleaner and or air cleaner dirty.
5. Spark plug defective or gap set improperly.
6. Water, debris or stale fuel in fuel system.
5. Service spark plug.
6. Drain and clean fuel system.
7. Turn Fuel Shut-Off to “ON” position
7. Honda & Kawasaki Engines Only – Fuel Shut-Off in
the “OFF” position
Engine Loses Power 1. Engine air pre-cleaner or air cleaner dirty
1. Clean or replace filters.
2. Spark plug faulty.
2. Service spark plug.
3. Water, debris or stale fuel in fuel system.
3. Drain and clean fuel system.
Excessive Vibration 1. Damaged, out of balance or bent mower blades.
2. Loose blade components.
1. Service mower blade(s).
2. Service and tighten loose parts.
3. Replace air lifts. Tighten to proper torque.
4. Replace belt.
3. Loose or missing air lift (if equipped).
4. Lumpy or frayed belt
1. Damaged transmission
2. Traction drive belt requires replacement
3. Driven disc slipping
Mower Will Not Move
Loss Of Traction
(Self-Propelled Models)
1. Contact authorized SNAPPER dealer.
2. Replace traction drive belt.
3. Clean or replace driven disc.
1. Cutting height too low or high.
2. Engine speed too slow.
1. Adjust cutting height.
Cutting Grass
Improperly
2. Move engine speed control to “FAST” position.
3. Move ground speed control to a slower speed.
4. Adjust height of cut with height adjust levers.
5. Adjust height of cut with height adjust levers.
6. Sharpen cutting edges or replace blade(s).
1. Move engine speed control to “FAST” position.
2. Move ground speed control to a slower speed.
3. Mow when grass is dry.
3. Forward ground speed too fast.
4. Terraced cut, side to side.
5. Excessive deck pitch, front to rear.
6. Cutting blade(s) dull or damaged.
1. Engine speed too slow.
Poor Grass Discharge
2. Forward speed too fast.
3. Grass is wet.
4. Excessively worn or damaged blade(s).
5. Build up of grass clippings and debris under deck.
6. Improper blade(s) installed on deck.
7. Blade(s) installed improperly on deck.
1. Leaking engine case.
4. Service mower blade(s)
5. Clean deck.
6. Install proper SNAPPER blades.
7. Install blades properly.
Oil Leaking
1. Contact authorized SNAPPER dealer.
2. Check and tighten drain plug.
3. Make sure dip stick or oil filler cap is securely
in place.
20
SERVICE SCHEDULE
ITEM
SERVICE PERFORMED
REF.
Page 6
EACH
USE
5
HRS
25
HRS
50
HRS
100
HRS
EACH
SEASON
Check Oil Level
Engine Oil
X
Initial Oil Change
Periodic Oil Change
Page 9
X
Page 10
X*
Clean Sponge Element
Clean or Replace
Replace
Engine Manual
Page 10.
Engine Manual.
Air Pre-Cleaner
Air Cleaner
Spark Plug
Fuel Filter
X**
X**
Engine Manual.
Engine Manual.
Engine Manual
X
X
Replace
Clean Shroud & Fins
Engine Cooling
System
X**
Check For Wear And
Tension
Check For Wear, Damage Page 12
& Replacement
Clean Debris
Accumulation
Page 17-18
Drive Belts
X
X
X
X
Mower Blades
Mower Deck
X
X
Page 6 & 11
Check Grease Level
Pages 10
Pages 10
Transmission
Grease
X
X
Periodic Grease Check
Check for Wear Damage Page 13-16
& Replacement
Drive Disc
X
* Change oil every 25 hours when operating under heavy load or high temperatures.
**Clean more often under dusty conditions or when air debris is present
4.5
MAINTENANCE/REPLACEMENT PARTS
MAINTENANCE PARTS
Engine Speed Control (Robin 4 Cycle Engine)
Engine Speed Control (Kawasaki Engine)
Engine Speed Control (Honda Engine)
Blade Control Cable (Robin 4 Cycle Engine)
Blade Control Cable (Kawasaki Engine)
Blade Control Cable (Honda Engine)
Clutch Pull Cable (See Parts Manual)
Cutter Blade (Air Lift Compatible)
Cutter Blade (Mulching)
7-4450
7-4449
7-4829
7-4448
7-3444
7-4830
4-7092
1-9795
1-7168
2-6691
2-6407
1-2354
4-6784
1-0927
06137
Cutter Blade (Not Air Lift Compatible)
Cutter Blade (Ninja - Quad Edge)
Wheel Drive Pulley to Transmission Pulley Belt
Engine to Drive Disc Belt
Rubber Drive Tire
Parts Manual for 21” Steel Deck Commercial Model
Walk Behind Mower Series 17
21
3 YEAR LIMITED WARRANTY
For three (3) years from purchase date for the original purchaser's residential, non-commercial use, SNAPPER, through
any authorized SNAPPER dealer will replace, free of charge (except for taxes where applicable), any part or parts found
upon examination by the factory at McDonough, Georgia, to be defective in material or workmanship or both.
For two (2) years from purchase date for the original purchaser's commercial, rental, or other non-residential use,
SNAPPER, through any authorized SNAPPER dealer will replace, free of charge, any part or parts found upon
examination by the factory at McDonough, Georgia, to be defective in material or workmanship or both.
All transportation costs incurred by the purchaser in submitting material to an authorized SNAPPER dealer for
replacement under this warranty must be paid by the purchaser.
This warranty does not apply to engines and their components, and batteries, as these items are warranted separately.
This warranty does not apply to parts that have been damaged by accident, alteration, abuse, improper lubrication,
normal wear, or other cause beyond the control of SNAPPER. This warranty does not cover any machine or component
part that has been altered or modified changing safety, performance, or durability.
Batteries have a one (1) year prorated warranty period with free replacement if required during the first ninety (90) days
from the original purchase date. SNAPPER will not be responsible for any installation cost incurred. The battery warranty
only covers original equipment batteries and does not cover damage to the battery or machine caused by neglect or
abuse, destruction by fire, explosion, freezing, overcharging, improper maintenance, or use of improper electrolyte.
There is no other express warranty.
DISCLAIMER OF WARRANTY
Implied warranties, including those of merchantability and fitness for a particular purpose, are limited to three
(3) years from purchase date for the original purchaser's residential or other non-commercial use, and two (2)
years from purchase for the original purchaser's commercial, rental or other non-residential use, and to the
extent permitted by law, any and all implied warranties are excluded. This is the exclusive remedy. Liabilities for
consequential damages, under any and all warranties are excluded.
Some states do not allow limitations on how long an implied warranty lasts, or do not allow the exclusion or
limitation of incidental or consequential damages, so the above limitation 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.
WARNING: THE USE OF REPLACEMENT PARTS OTHER THAN GENUINE SNAPPER PARTS MAY IMPAIR THE
SAFETY OF SNAPPER PRODUCTS AND WILL VOID ANY LIABILITY AND WARRANTY BY SNAPPER
ASSOCIATED WITH THE USE OF SUCH PARTS.
IMPORTANT: Please fill out the attached SNAPPER Product Registration Card immediately and mail to:
Snapper’s Product Registration Center, P.O. Box 1379, McDonough, Georgia 30253
22
PRIMARY MAINTENANCE
23
PRIMARY MAINTENANCE
24
PRIMARY MAINTENANCE
25
PRIMARY MAINTENANCE
26
SNAPPER PRODUCT REGISTRATION FORM
IMPORTANT: KEEP THIS INFORMATION FOR YOUR PERSONAL RECORDS
(Complete the following information on your Snapper purchase)
Model Number ____________________________________________________________
Serial Number _____________________________________________________________
Date of Purchase ___________________________________________________________
Retailer ___________________________________________________________________
Retailer’s Phone Number____________________________________________________
It is very important that you register your purchase with Snapper to ensure
warranty coverage. Please mail your product registration card to:
Snapper at P.O. Box 777, McDonough, Georgia 30253.
Or you may register on line at www.snapper.com.
You can contact us at our web site or if you would like to speak with a Customer
Service Representative. Call us at the Snapper Customer Relations Center. For
faster service please have your Serial Number and Model Number available.
Call the Snapper Customer Relations Center at 1-800-935-2967.
Eastern Standard Time
Monday through Friday from 8am to 6pm.
Saturday from 9am to 1pm.
27
Safety Instructions & Operator’s Manual for
21” STEEL DECK
WALK MOWERS
COMMERCIAL MODEL
SERIES 17
IMPORTANT
Snapper products are built using engines that meet or exceed all applicable emissions requirements on
the date manufactured. The labels on those engines contain very important emissions information and
critical safety warnings. Read, Understand, and Follow all warnings and instructions in this manual, the
engine manual, and on the machine, engine and attachments. If you have any questions about your
Snapper product, contact your local authorized Snapper dealer or contact Snapper Customer Service at
Snapper, McDonough, GA. 30253. Phone: (1-800-935-2967).
WARNING
BATTERY POSTS, TERMINALS AND RELATED ACCESSORIES CONTAIN LEAD AND LEAD COMPOUNDS,
CHEMICALS KNOWN TO THE STATE OF CALIFORNIA TO CAUSE CANCER AND BIRTH DEFECTS OR OTHER
REPRODUCTIVE HARM. WASH HANDS AFTER HANDLING.
WARNING
ENGINE EXHAUST, SOME OF ITS CONSTITUENTS, AND CERTAIN VEHICLE COMPONENTS CONTAIN OR
EMIT CHEMICALS KNOWN TO THE STATE OF CALIFORNIA TO CAUSE CANCER OR OTHER
REPRODUCTIVE HARM.
COPYRIGHT © 2002
SNAPPER INC.
ALL RIGHTS RESERVED
MANUAL No. 7-4932 (I.R. 6/07/02)
28
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