Safety Instructions & Operator’s Manual for

21” STEEL DECKWALK MOWERSSERIES 12 & 14
MODELSPUSH MODELS
215012215014
R215012
N215012
NR215012
FR215012
FR215014

PROPELLED MODELS
P216012
EP216012
NP216012
RP215012
RP216012
RP215012T2
FRP216012
NRP215012
NFRP216012

MODEL NUMBER EXPLANATIONR

PMODEL DESIGNATION
SELF-PROPELLED
CUTTING WIDTHENGINE HORSE POWER
R – Recycling ModelF – Flange Type Deck
P – Self Propelled Model
N – California ModelE – European Model
21 – 21” Cutting Width
50 – 5.0 HP (Engine Horse Power)
60 – 6.0 HP (Engine Horse Power)

21

50

12

T

2
ENGINE OPTIONSENGINE TYPESERIES DESIGNATION

12 - Series Designation
14 – Series Designation
T – Tecumseh Engine
2 – Two Cycle 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 accordancewith the operating instructions and common sense.

COPYRIGHT © 1999
SNAPPER INC.
ALL RIGHTS RESERVEDMANUAL No. 3-5743 (REV. 2, 9/2/99)

IMPORTANT SAFETY INSTRUCTIONSWARNING: This powerful cutting machine is capable of amputating hands and feet and can throw objects thatcan cause injury and damage! Failure to comply with the following SAFETY instructions could result in serious
injury or death to the operator or other persons. The owner of the machine must understand these instructions
and must allow only persons who understand these instructions to operate machine. Each person operating themachine must be of sound mind and body and must not be under the influence of any substance, which might
impair vision, dexterity or judgment. If you have any questions pertaining to your machine which your dealer
cannot answer to your satisfaction, call or write the Customer Service Department at SNAPPER, McDonough,Georgia 30253. Phone: (1-800-935-2967).

PROTECTION FOR CHILDREN

PREPARATION

Tragic accidents can occur if the operator is notalert to the presence of children. Children are often
attracted to the machine and the mowing activity.
Never assume that children will remain where you
last saw them.

(Continued From Previous Column)
3. Data indicates that operators age 60 and above,
are involved in a large percentage of mowerrelated injuries. These operators should
evaluate their ability to operate the mower
safely enough to protect themselves and othersfrom serious injury.
4. Handle fuel with extra care. Fuels are flammableand vapors are explosive. Use only an approved
fuel container. DO NOT remove fuel cap or add
fuel with engine running. Add fuel outdoors
only with engine stopped and cool. Clean
spilled fuel and oil from machine. DO NOT
smoke.
5. Check the area to be mowed and remove all
objects such as toys, wire, rocks, limbs andother objects that could cause injury if thrownby blade or interfere with mowing. Also note thelocation of holes, stumps, and other possible
hazards.
6. Keep people and pets out of the mowing area.
Immediately, STOP Blade, Stop engine and Stop
mower if anyone enters the area.
7. Check shields, deflectors, switches, blade
controls and other safety devices frequently forproper operation and location.
8. Make sure all safety decals are clearly legible.
Replace if damaged.
9. Protect yourself when mowing and wear safety
glasses, long pants and substantial footwear.
DO NOT mow barefooted or with sandals.
10. Know how to STOP blade and engine quickly in
preparation for emergencies.
11. Use extra care when loading or unloading themachine into a trailer or truck.
12. Check grass catcher components frequently forsigns of wear or deterioration and replace asneeded to prevent injury from thrown objects
going through weak or torn spots.

1. KEEP children out of the mowing area andunder the watchful care of a responsible adult.
2. DO NOT allow children in yard when machine isoperated and turn machine OFF if anyone
enters the area.
3. DO NOT allow pre-teenage children to operatemachine.
4. ALLOW only responsible adults & teenagers
with mature judgment under close adultsupervision to operate machine.
5. DO NOT pull mower backwards unlessabsolutely necessary. LOOK and SEE behindand down for children, pets and hazards before
and while backing.
6. USE EXTRA CARE when approaching blind
corners, shrubs, trees, or other objects that may
obscure vision.

SLOPE OPERATION
1. Slopes are a major factor related to slip and fall
accidents, which can result in severe injury. All
slopes require extra caution. If you feel uneasy
on a slope, DO NOT mow it.
2. Mow across slopes, never up-and-down.
Exercise extreme CAUTION when changing
directions on slopes. DO NOT mow steep
slopes or other areas where stability or traction
is in doubt.
3. Use extra care with crass catchers or otherattachments; these affect the handling and thestability of the machine.

PREPARATION
1. Read, understand, and follow instructions andwarnings in this manual and on the mower,engine and attachments. Know the controls andthe proper use of the mower before starting.
2. Only mature, responsible persons shall operate
the machine and only after proper instruction.

2

IMPORTANT SAFETY INSTRUCTIONSOPERATION

MAINTENANCE AND STORAGE

1.

1. DO NOT store mower or fuel container insidewhere 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 ofchildren in a well ventilated, unoccupied
building.
2. Keep mower and engine free of grass, leaves orexcess grease to reduce fire hazard and engine
overheating.
3. When draining fuel tank, drain fuel into an
approved container outdoors and away fromopen flame.
4. Keep all bolts, especially blade bolts, nuts andscrews properly tight. Check that all cotter pins
are in proper position.
5. Always provide adequate ventilation whenrunning engine. Engine exhaust gases containcarbon 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 fromspark 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 andexposure to moving parts. Replace with new
bag if loose seams or tears are evident. Replaceslider or bag adapter if broken or cracked.
9. Mower blades are sharp and can cut. Wrap theblades or wear heavy leather gloves and use
CAUTION when handling them.
10. DO NOT test for spark by grounding spark plugnext 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 havethe dealer install any new safety devices.
12. Use only genuine SNAPPER replacement parts
to assure that original standards aremaintained.

DO NOT put hands or feet near or under rotatingparts. Keep clear of discharge area while engine isrunning.
2. STOP engine when crossing gravel drives, walks, orroads, and under any conditions where thrownobjects might be a hazard.
3. Mow only in daylight or good artificial light.
4. DO NOT operate mower while under the influenceof alcohol or drugs.
5. After striking a foreign object or if mower vibrates
abnormally, STOP the engine, disconnect andsecure spark plug wire. Inspect the mower for any
damage and repair the damage.
6. DO NOT mow near drop offs, ditches orembankments. Operator could lose footing orbalance.
7. STAY ALERT for holes and other hidden
hazards. Tall grass can hide obstacles. Keepaway from ditches, washouts, culverts, fences
and protruding objects.
8. DO NOT mow on wet grass. Always be sure ofyour 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 makecertain 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 tocomplete STOP before removing grass bag
and/or clearing grass.
12. DO NOT operate mower without the entire grasscatcher or guards in place. DO NOT point
discharge at people, passing cars, windows ordoors.
13. Slow down before turning.
14. Watch out for traffic when near or crossing
roadways.
15. DO NOT operate engine in enclosed areas.
Engineexhaustgases
containcarbonmonoxide, a deadly poison.

3

TABLE OF CONTENTSIMPORTANT SAFETY INSTRUCTIONS.............................................2 & 3
TABLE OF CONTENTS ............................................................................ 4
SECTION 1 - FAMILIARIZATION.............................................................. 5
SECTION 2 - OPERATING INSTRUCTIONS......................................... 6-8
Pre-start Checklist ............................................................................................... 6
Starting & Stopping Engine & Blade............................................................... 6-7
Starting & Stopping Wheel Drive ....................................................................... 7
Handle Height Adjustment .................................................................................. 7
Cutting Height Adjustment
Recycling Operation ............................................................................................ 8
Baffle Adjustment ................................................................................................ 8
Installation of Grass Catcher .............................................................................. 8

SECTION 3 - MAINTENANCE INSTRUCTIONS.................................. 9-10
Change Engine Oil ............................................................................................... 9
Check Transmission Grease.......................................................................... 9-10
Check Mower Blade ........................................................................................... 10
Check Engine Drive Belt ................................................................................... 10
Check Transmission Poly-V Belt...................................................................... 10
Service - Annually .............................................................................................. 10
Engine.............................................................................................................. 10
Air Filter ........................................................................................................... 10
Engine Oil ........................................................................................................ 10
Storage Procedure............................................................................................. 10

SECTION 4 - ADJUSTMENTS AND REPAIR .................................... 11-17
Mower Blade Replacement ............................................................................... 11
Blade Sharpening ......................................................................................... 11-12
Wheel Drive Control Adjustment...................................................................... 12
Driven and Drive Disc Service .......................................................................... 13
Cleaning Drive Disc and Driven Disc............................................................ 13
Drive Spring Repair/Replacement................................................................. 13
Driven Disc Adjustment ............................................................................ 13-14
Driven Disc Replacement.......................................................................... 14-15
Driven Disc Bearing Replacement ................................................................ 15
Hex Shaft Bearing Replacement ................................................................... 16
Belt Service ........................................................................................................ 16
Engine Drive Belt Replacement ............................................................... 16-17
Transmission Poly-V Belt Replacement ....................................................... 17

TROUBLESHOOTING ............................................................................ 18
SERVICE SCHEDULE ............................................................................ 19
Maintenance/Replacement Parts...................................................................... 19

WARRANTY ............................................................................................ 20
PRIMARY MAINTENANCE ................................................................ 21-24

4

Section 1 - FAMILIARIZATIONFIGURE 1.1
1.1 INTRODUCTION
This manual has been prepared for the operators of
the SNAPPER WALK BEHIND MOWERS. Its
purpose, aside from recommending operating androutine 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 thismanual and all safety messages on the mower andattachments before operating the mower.

1.2 NOMENCLATURE
The nomenclature drawing above, Figure 1.1, showsthe essential parts of the SNAPPER WALK BEHIND
MOWERS. It is recommended that all operators ofthe mower become thoroughly familiar with thecontrols, parts and operation of the mower before
operating. Specific details involving the engine arefound 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
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.
2.1.2. Check blade control and wheel drive control toinsure they work freely. See Figure 2.1.

2.1.6. Clean exterior surfaces of cutting deck andengine of any accumulation of spilled fuel, dirt, grass,oil, etc. Keep engine air intake screen and coolingfins clear at all times.
2.2 STARTING & OPERATION
2.2.1. ENGINE & BLADE(Primer Models)
1. Move engine speed control to the “Fast” (Rabbit)
position. See Figure 2.3.

RECYCLING MODEL SHOWN(ROPE START MOUNTED ON
RIGHT SIDE OF HANDLE)NOTE: Stop the engine (and blade) by releasing theblade control.
CATCHER MODEL SHOWN(ROPE START MOUNTED
ON LEFT SIDE OF HANDLE)

BLADECONTROL

BLADE
CONTROLWHEEL DRIVECONTROL

FIGURE 2.1

WHEEL
DRIVE
CONTROL2.1.3. Check cutting height. Adjust to desired height.
2.1.4. Check engine oil and add oil as needed to bringlevel up to the full mark. Refer to Engine Owner’s
Manual for oil specifications. See Figure 2.2.

ENGINE SPEED CONTROL(SHOWN IN FASTPOSITION)FIGURE 2.3
2. Push primer button three times to start a coldengine. NOTE: Do not use primer button to start
warm engine.
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 2.2
2.1.5. Add fuel to tank after pushing the mower
outside where fumes can safely dissipate. Make surecap is tightened after refueling. Refer to Engine
Owners Manual for specifications.

6Section 2 - OPERATING INSTRUCTIONS
2.2.2. PROPELLING MOWER(Self Propelled Models Only)
1. Move ground speed control to the desired speed
position. See Figure 2.4.
2. Start engine. Refer to Section “Starting &Operation”.
3. Move wheel drive control against handle toengage wheel drive and propel mower forward.
Forward speed can be adjusted while the mower ismoving by changing position of the ground speed
control. See Figure 2.4.

2. Move upper mower handle up or down until thedesired position is achieved.
3. Tighten the lower nuts on each lower handle tomaintain desired position.

WARNINGSTOP engine and mower blade by releasing the blade
control before adjusting cutting height or handle
height.

RECYCLING MODEL SHOWN(ROPE START MOUNTED ON
RIGHT SIDE OF HANDLE)MOVE GROUNDSPEED CONTROL TO
DESIRED POSITION

2.5 CUTTING HEIGHT ADJUSTMENT
1. Pull the height adjusting latch outward and move
to desired cutting height. See Figure 2.6.

(FAST)SIXTH SPEEDPOSITION

1LOWEST CUTTINGHEIGHT

LATCH

SIXTH

FIRST

(SLOW)FIRST SPEEDPOSITIONWHEEL DRIVECONTROL

1
2
3
4

BLADE
CONTROL

5

FIGURE 2.4

6

2.3 STOPPING
Stop engine and blade by releasing the blade
control. Stop forward motion of mower by releasing
the wheel drive control.

HIGHEST
CUTTING
HEIGHT

6

FIGURE 2.6
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 2.7.

2.4 HANDLE HEIGHT ADJUSTMENT
The height of the mower handle can be adjusted asfollows:
1. Loosen the lower nuts on each lower handle asshown in Figure 2.5.
HIGHERLATCH
POSITIONSLOWER
HANDLELOWER

CUTTING HEIGHT SETTINGSLOOSEN LOWER
NUTS ON EACH
LOWER HANDLE

FIGURE 2.7

FIGURE 2.5
7

Section 2 - OPERATING INSTRUCTIONSWARNING
DO NOT attempt any maintenance, adjustments orservice with engine and blade running. STOP engine
and blade. Disconnect spark plug wire and secureaway from spark plug. Engine and components are
HOT. Avoid serious burns, allow sufficient time for allcomponents to cool.

HOLE DESIGNATES TOP OFBAFFLE (ALWAYS KEEP
HOLE IN UP POSITION)
FRONT
DECK
BAFFLEFRONT DECK BAFFLE (SHOWNIN HIGHEST POSITION)

2.6 RECYCLING OPERATION

WING
NUTS

WING NUT

MOVE BAFFLE UP FOR
MULCHING GRASSNOTE: For best recycling results, cut up to a maximum of
1/3 of grass blade length and recycle ONLY when grass is
dry.
1. Set all wheels in the highest cutting position(Notch 6).
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.

FRONT CUTOUT OF DECKMOVE BAFFLE DOWNFOR GRASS BAGGINGFIGURE 2.8

WARNING
DO NOT operate without entire Grass Catcher or
guard in place. Grass Catcher components are
subject to deterioration during normal use. Inspectfrequently and replace worn or damaged components
immediately.

2.7 ADJUSTING FRONT DECK BAFFLE(Models with an “F” prefix in model number)(Example: FR215012)
The front of the cutting deck on these models has
been modified with an open area. This allows theblade to have more direct contact with the grass andallows more air flow into deck chamber. The
adjustable baffle should be secured in the lowest
position when using a grass bag. The baffle should
be secured in the highest position when mulchinggrass.

POSITION BAG
BETWEEN HANDLESCONNECTOR

NOTE: Under certain conditions, when mulching, somegrass may blow out from under front of baffle. This isnormal but, the amount of grass blowing out can be
reduced. Lower baffle slightly to reduce the amount ofgrass blow out.

SLIDE
CONNECTORDOWN OVER BAG
ADAPTER FLANGEBAG ADAPTER

1. Stop engine.
2. Loosen wing nuts that secure front deck baffle.
See Figure 2.8.
3. Lower the adjustable baffle to the lowest position
when using a grass bag. Raise the baffle to its
highest position when mulching grass. Take care tokeep the baffle’s lower edge parallel to the bottom of
the deck. See Figure 2.8.
4. Retighten wing nuts securely.

FIGURE 2.9

2.8 INSTALLATION of GRASS CATCHER
Install grass catcher by sliding connector over flange ofadapter. See Figure 2.9. Attach grass bag hooks overmiddle handle cross bar. See Figure 2.10.

ATTACH BAG HOOKSOVER MIDDLE HANDLECROSS BAR

FIGURE 2.10
8

MIDDLEHANDLECROSS
BAR

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 particularmower, always mention model and serial number.

3.2.2. CHECK GREASE LEVEL IN TRANSMISSION
1. Remove transmission fill plug. Roll machine
forward or backward while looking down into plughole.
2. If liquid grease IS NOT visible on the input gear(the small gear below the plug hole), add anamount, to cover gear, of Snapper “00” grease. See
Figure 3.2.

3.2 SERVICE - AFTER FIRST 5 HOURS
3.2.1. CHANGE ENGINE OILWARNING
DO NOT attempt any maintenance, adjustments orservice with engine and blade running. STOP engine
and blade. Disconnect spark plug wire and secureaway from spark plug. Engine and components are
HOT. Avoid serious burns, allow sufficient time for allcomponents to cool.

FILL PLUG

1. Refer to Engine Manual for proper oil
specifications and procedures.
2. For simplest/cleanest oil change, loosen lower
handle wing nuts and stand mower up on lower
handle as shown in Figure 3.1. Drain oil throughdipstick tube into a container.
FIGURE 3.2
NOTE: Snapper “00” Grease (Part No. 2-9443) is available
at your SNAPPER dealer.
(Continued on Next Page)

FIGURE 3.1

9

Section 3 – MAINTENANCE
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.

3.2.2. CHECK GREASE LEVEL IN TRANSMISSION(Continued from previous page)
NOTE: 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 ofoperation.

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.

KEEP DRIVE DISC CLEAN !

RECOMMENDED
BLADE RETAINING
CAP SCREWTORQUE VALUESHOULD BE 30 TO
40 FT. LBS.

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.

FIGURE 3.3

WARNING
DO NOT attempt any maintenance, adjustments orservice with engine and blade running. STOP engine
and blade. Disconnect spark plug wire and secureaway from spark plug. Engine and components are
HOT. Avoid serious burns, allow sufficient time forall components to cool. Wear heavy leather gloves
when handling or working around cutting blades.
Blades are extremely sharp and can cause severe
injury.

3.4 STORAGE PROCEDURE
Refer to the Engine Owner’s Manual for directions regarding
engine storage preparations. Prepare the mower for “end of
season” storage as follows:
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 wireaway 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 withspark plug or carburetor down. Scrape away any
accumulation of grass with a putty knife and or wirebrush.
5. Lubricate all exposed metal with a light coating of oil
to prevent corrosion.
6. On self-propelled models, loosen wing nuts on
ground speed control rod before folding handles.
7. Loosen handle knobs. Carefully fold the handles
forward, “flexing” the control cables to prevent cabledamage.
8. Store the mower in a shed or other dry area,
protected from weather.

IMPORTANT: 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 startat all. If contamination does occur, the air filter will have tobe replaced.
3.2.3 CHECK MOWER BLADE
1. Disconnect spark plug wire and secure end awayfrom plug.
2. Tilt mower up on its rear wheels for access tothe 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 30 to 40 ft. lbs.
See Figure 3.4.
4. Check blade for sharpness, wear and damage.
Refer to Section “Blade Wear Limits”.

10Section 4 - REPAIR & ADJUSTMENTS
2. Replace the blade if it is badly chipped, bent,
noticeably out of balance or has cracks or notch ineither tip. See Figure 4.1 & 4.1A. Replace with new
blade.

WARNING
DO NOT attempt any maintenance, adjustments orservice with engine and blade running. STOP engine
and blade. Disconnect spark plug wire and secureaway from spark plug. Engine and components are
HOT. Avoid serious burns, allow sufficient time for allcomponents to cool. Wear heavy leather gloves whenhandling or working around cutting blades. Blades
are extremely sharp and can cause severe injury.

WARNING
DO NOT use a cutting blade that shows signs ofexcessive wear or damage. Refer to Section“MOWER BLADE REPLACEMENT” for proper blade
inspection and service procedures.

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.

4.1.2. BLADE SHARPENING
1. Disconnect spark plug wire and secure end awayfrom plug.
IMPORTANT: 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.

NEW BLADEWEAR LIMIT(NOTCH STARTS)DANGEROUS CONDITION !
DO NOT USE ON MOWER !
REPLACE WITH NEWBLADE.

2. Tilt mower up on its rear wheels. Do not tilt
mower with spark plug or carburetor down.
3. Remove blade. See Figure 4.3.
MAKE SURE THATBLADE HUB IS
SEATEDBETWEEN
FLANGESBLADE
HUB

FIGURE 4.1
FLANGE

4.1.1A. NINJA BLADE WEAR LIMIT
1A. Inspect blade frequently for signs of excessive
wear or damage. See Figure 4.2.
BLADE

WEAR LIMIT.
CRACKS OR
NOTCHESBEGIN TOAPPEAR ON TIP

NEW BLADECONE WASHER(Concave Side Up)
CAPSCREWFIGURE 4.3

DANGEROUS !
DO NOT USE A BLADE IN
THIS CONDITION !

FIGURE 4.2

11

Section 4 - REPAIR & ADJUSTMENTSWARNING

CLUTCH CABLE

DO NOT attempt any maintenance, adjustments orservice with engine and blade running. STOP engine
and blade. Disconnect spark plug wire and secureaway from spark plug. Engine and components are
HOT. Avoid serious burns, allow sufficient time for allcomponents to cool.

VINYL SPRING
1/16” TO 1/8”
CLEARANCEUPPERSPRING

CLUTCH CABLE
EYE
SPRING HOOKLOWERSPRING

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 4.4.
DO NOT SHARPEN
BEYOND ORIGINAL
CUTTING EDGE

CABLE

22-28º

CLUTCH CABLE EYE
SPRINGBLADE TIP

END VIEW OF
BLADE ASSEMBLY
ORIGINAL CUTTING EDGE

FIGURE 4.5
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 checkclearance. Repeat procedure if required.

5. Check blade for balance. If necessary, correctbalance by grinding heavy end of blade.
6. Reinstall blade. See Figure 4.1. Check torque of
blade retaining cap screw. Recommended torqueshould be 30 to 40 ft. lbs.

NOTE: The vinyl spring cover should be kept over thespring at all times except for adjustments.

NOTE: The following sections 4.2 through4.4 are for self-propelled models only.

4. If the wheel drive control fails to return quickly to
the “OFF” position when released, check for bindingat the cable holdings located on the side of the righthandle. The upper clip should be located 2” below
the upper knob; the lower clip should be 4” above
the lower knob. The cable should slide freely withthe clips installed at these locations.

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 cableeye with the wheel drive control released. See
Figure 4.5.

12

Section 4 - REPAIR & ADJUSTMENTS
USE
NEEDLENOSE
PLIERS TO
INSTALLDRIVESPRINGWARNING
DO NOT attempt any maintenance, adjustments orservice with engine and blade running. STOP engine
and blade. Disconnect spark plug wire and secureaway from spark plug. Engine and components are
HOT. Avoid serious burns, allow sufficient time for allcomponents to cool.
4.3 DRIVEN DISC SERVICE
If the mower does not propel itself properly, See
Figure 4.6. Check for the following problems:

DRIVE
SPRINGDRIVEN DISC &RUBBER RING

POLY-VBELTDRIVE
SPRINGENGINEDRIVE
BELT

FIGURE 4.7

DRIVE
DISC

4.3.3. DRIVEN DISC ADJUSTMENT
If the drive disc and driven disc are clean and themower drive is still slipping, adjust the driven disc as
follows:
1. Place ground speed control in the number six
speed position. See Figure 4.8.
FIGURE 4.6
MOVE GROUNDSPEED CONTROL TOSIX SPEED POSITION

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.

REYCLING MODEL SHOWN(ROPE START MOUNTED ON
RIGHT SIDE OF HANDLE)SIXTH SPEEDPOSITION
SIXTH

NOTE: If any of the above (1 thru 5) are causing
problems, service as follows:
4.3.1. Cleaning Drive Disc & Driven Disc.
If oil or grease on the drive disc or driven disc iscausing 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.
4. Dry components with a clean cloth.

FIRST

FIRST SPEEDPOSITIONFIGURE 4.8

4.3.2. Drive Spring Repair/Replacement
If drive spring is loose, reconnect as shown in Figure
4.7. If spring is broken, replace with new spring.
IMPORTANT: If machine drive system continues
slipping see Trouble Shooting section.

13

Section 4 - REPAIR & ADJUSTMENTSWARNING1/8” MEASUREMENT TOOUTSIDE EDGE OF DRIVEDISC

DO NOT attempt any maintenance, adjustments orservice with engine and blade running. STOP engine
and blade. Disconnect spark plug wire and secureaway from spark plug. Engine and components are
HOT. Avoid serious burns, allow sufficient time forall components to cool.

DRIVE
DISC

SLIDE DRIVENDISC ASSEMBLY
TOWARD OUTSIDE
EDGE

4.3.3. DRIVEN DISC ADJUSTMENT(Continued From Previous Page)
2. Remove driven disc spring from driven discassembly. Loosen connector hex nut. See Figure 4.9.

TRANSFER
ROD

CONNECTORHEX NUTDRIVEN DISCASSEMBLYOUTSIDEEDGE

CONNECTOR
DRIVE
DISC

FIGURE 4.10
DRIVEN DISCSPRING

4.3.4. Replacing Rubber Driven Disc Ring
If the rubber ring is badly chunked or worn down towithin 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
4.11.

TRANSFER
ROD

CONNECTOR
CONNECTORHEX NUTFIGURE 4.9
CONNECTOR
CLIP

3. Slide driven disc assembly over to 1/8” from outsideedge of drive disc. Maintaining the 1/8” measurement,
remove any looseness from the linkage. This can bedone by holding the transfer rod and applying pressure
to the left (as viewed from operators position). Then
retighten the connector hex nut securely. See Figure
4.10. 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.

TRANSFER
ROD
SPEED CONTROLROD

FIGURE 4.11

(Continued On Next Page)

14Section 4 - REPAIR & ADJUSTMENTS
4.3.5. Replacing Bearing In Driven Disc Assembly
If the driven disc bearing fails, remove the driven
disc assembly and replace bearing 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
4.11.
2. Using needle nose pliers, unhook the drive springand slide the driven disc assembly off the hex shaft.
See Figure 4.12.
3. Remove snap ring that secures driven disc hub
to thrust plate. See Figure 4.14.

WARNING
DO NOT attempt any maintenance, adjustments orservice with engine and blade running. STOP engine
and blade. Disconnect spark plug wire and secureaway from spark plug. Engine and components are
HOT. Avoid serious burns, allow sufficient time forall components to cool.
4.3.4. Replacing Rubber Driven Disc Ring
(Continued From Previous Page)
2. Using needle nose pliers, unhook the drive springand slide the driven disc assembly off the hex shaft.
See Figure 4.12.
3. Remove the five machine screws and plate, which
secure the rubber ring to the driven disc hub. See
Figure 4.13.
4. Install new rubber ring.
5. Reverse above procedures for reassembly andinstallation.

THRUSTPLATESHIMWASHER
SNAP
RING

BEARINGREMOVE FOUR
MACHINE SCREWSDRIVENDISC HUB
RUBBERDISC

DRIVEN DISC
PLATEDRIVE DISCASSEMBLY

FIGURE 4.14
4. Slide the hub assembly out of the bearing.
5. Remove the four screws.
6. Remove bearing and replace with new bearing.
7. Reassemble components in reverse order.

FIGURE 4.12
DRIVEN DISC HUB
MACHINESCREWSRUBBER
RING
PLATE

FIGURE 4.13

15

Section 4 - REPAIR & ADJUSTMENTS
4.4.1. Engine Drive Belt Replacement
1. Empty the fuel tank.
2. Unhook the idler spring from the right rear wheel
bracket. See Figures 4.16.

WARNING
DO NOT attempt any maintenance, adjustments orservice with engine and blade running. STOP engine
and blade. Disconnect spark plug wire and secureaway from spark plug. Engine and components are
HOT. Avoid serious burns, allow sufficient time forall components to cool.

RIGHT REARWHEEL BRACKETSLOT IN
DECK

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 locatedon the outside of the right wheel bracket. See
Figure 4.15.
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.

IDLER
SPRING

IDLER
ARM

DRIVE DISCDRIVE BELTENGINE DRIVE PULLEYTOP VIEW OF ENGINE BELT ROUTINGFIGURE 4.16

IMPORTANT: 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 startat all. If contamination does occur, the air filter will have tobe replaced.
3. Remove the driven disc. Refer to Section“Replacing Driven Disc Rubber Ring” for driven discremoval procedure.
4. Do not tilt mower with spark plug or carburetor
down. Tilt mower up on its rear wheels and remove
blade and blade hub. Assistance from anotherperson may be necessary to hold mower in thetilted position.

BALL BEARING“O” RING

3/8”
LOCK NUT(Continued On Next Page)
BALL BEARINGHOLDER

FIGURE 4.15
4.4. BELT SERVICE
On self-propelled mowers, the engine belt transmits
power from engine to drive disc. The drive disc powers
the poly-v belt which engages the transmission thatpowers 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.
16

Section 4 - REPAIR & ADJUSTMENTSWARNING
DO NOT attempt any maintenance, adjustments orservice with engine and blade running. STOP engine
and blade. Disconnect spark plug wire and secureaway from spark plug. Engine and components are
HOT. Avoid serious burns, allow sufficient time for allcomponents to cool.

IDLER
SPRINGRIGHT WHEEL
BRACKET

4.4.1. Engine Drive Belt Replacement(Continued from Previous Page)
5. Hold the slotted end of the drive disc bolt with ascrewdriver and remove the nut and internal tooth
lock washer. See Figure 4.17.

PULL SPRING THROUGHLARGE HOLE & HOOK
INTO SMALL HOLE

DRIVE
DISC

SLOT IN END
OF DRIVE
DISC BOLTPOSITION SCRAPERTO CLEAR “V” OF
PULLEYFIGURE 4.18
4.4.2. Transmission Poly-V Belt Replacement
1. Remove the driven disc. Refer to Section on“Replacing Driven Disc Rubber Ring” for procedure.
2. Note the routing of the old belt around the threepulleys before removing it. See Figure 4.19.
3. Place new Poly-V Belt over end of hex shaft andonto 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 thendown into the pulley groove. Make sure the Poly-V
Belt is above belt guide. See Figure 4.19.

BUSHING

IDLER
ARM
SPACERIDLER
SPRINGDECK BRACKET(PARTIALLY
SHOWN)

INTERNAL TOOTH
LOCKWASHER
NUT

IDLER
PULLEYFIGURE 4.17

DRIVENPULLEY

6. Lift the drive disc off the idler arm and remove
worn belt.
7. Loop one end of new belt over engine pulley andinsert the other end through slot in deck. See Figure
4.17.
8. Loop the belt around the pulley on the bottom of
the drive disc.
9. Reinstall drive disc and retaining hardware.
10. Reinstall blade hub and cutter blade. Recom-mended
torque for blade cap screw is 30 to 40 ft. lbs.
11. Use a stiff wire, such as a coat hanger, with ahook fashioned on one end to pull the hooked end of
the idler spring through the large hole in the rightwheel bracket. See Figure 4.18.
12. Reinstall the driven disc assembly.

DIFFERENTIAL
BRACKET
POLY-VBELT

HEX SHAFTDRIVEPULLEYBELT GUIDEROUTING OF POLY-V BELTFIGURE 4.19

17

TROUBLESHOOTINGPROBLEM
Engine Will Not Start
Using Recoil Starter

PROBABLE CAUSE
1. Fuel tank empty.
2. Engine needs choking or priming.

CORRECTIVE ACTION
1. Fill fuel tank with fresh fuel.
2. Choke/Prime. Check Engine Manual for
Instructions.
3. Place spark plug wire onto spark plug.

3. Spark plug wire disconnected.
Engine Stalls or Stops 1. Blade control is released or is not being held securely
After Runningagainst handle.
2. Choke control in the “CHOKE” position.
3. Fuel tank empty.
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.

1. Blade control should be held securely against
handle at all times during operation of mower.
2. Move choke control to “OFF” position.
3. Fill with fuel to proper level.
4. Clean free of all debris.
5. Service spark plug.
6. Drain and clean fuel system.

Engine Loses Power

1. Engine air pre-cleaner or air cleaner dirty
2. Spark plug faulty.
3. Water, debris or stale fuel in fuel system.

1. Clean or replace filters.
2. Service spark plug.
3. Drain and clean fuel system.

Excessive Vibration

1. Damaged, out of balance or bent mower blade.
2. Loose blade components.
3. Loose or missing air lift (if equipped).
4. Lumpy or frayed belt
5. Bent Idler pulley

1. Service mower blade.
2. Service and tighten loose parts.
3. Replace air lifts. Tighten to proper torque.
4. Replace belt.
5. Replace pulley.

Mower Will Not Move 1. Damaged transmission
2. Traction drive belt requires replacement
Loss Of Traction(Self-Propelled Models) 3. Driven disc slipping
1. Cutting height too low or high.
Cutting Grass
2. Engine speed too slow.
Improperly
3. Forward ground speed too fast.
4. Terraced cut, side to side.
5. Excessive deck pitch, front to rear.
6. Cutting blade dull or damaged.

1. Adjust cutting height.
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.

Poor Grass Discharge 1. Engine speed too slow.
2. Forward speed too fast.
3. Grass is wet.
4. Excessively worn or damaged blade.
5. Build up of grass clippings and debris under deck.
6. Improper blade installed on deck.
7. Blade installed improperly on deck.

1. Move engine speed control to “FAST” position.
2. Move ground speed control to a slower speed.
3. Mow when grass is dry.
4. Service mower blade.
5. Clean deck.
6. Install proper SNAPPER blade.
7. Install blade properly.

1. Leaking engine case.

1. Contact authorized SNAPPER dealer.
2. Check and tighten drain plug.
3. Make sure dip stick or oil filler cap is securely
in place.

Oil Leaking

18

1. Contact authorized SNAPPER dealer.
2. Replace traction drive belt.
3. Clean or replace driven disc.

SERVICE SCHEDULEITEMSERVICE PERFORMED

Engine Oil

REF.

EACH
USE
X

5
HRS

25
HRS

Check Oil Level

Page 6

Initial Oil Change

Page 9Periodic Oil Change

Page 10X*

Clean Sponge Element

X**

50
HRS

100
HRS

X

Air Cleaner

Clean or Replace

Engine Manual& Page 10.
Engine Manual.

Spark Plug

ReplaceEngine Manual.

X

Clean Shroud & Fins

Engine Manual

X**

Check For Wear And
TensionCheck For Wear, Damage& Replacement
Clean Debris
Accumulation
Check Grease Level

Page 16-17

Air Pre-Cleaner

Engine Cooling
SystemDrive Belts
Mower Blade
Mower Deck
Transmission
GreasePeriodic Grease Check

X**

X

Page 11-12

X

Page 10

X

Pages 9

X

X

X

X

Pages 10

X

Check for Wear Damage Page 12-15& Replacement*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
Drive Disc

4.5.

EACH
SEASONX

MAINTENANCE/REPLACEMENT PARTS

MAINTENANCE PARTS
Engine Speed Control (Briggs Engines)
Engine Speed Control (Tecumseh 4 Cycle Engine)
Engine Speed Control (Tecumseh 2 Cycle Engine)
Blade Control Cable (See Parts Manual)
Clutch Pull Cable (See Parts Manual)
Cutter Blade (European Models Only)
Cutter Blade (Mulching)
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 Walk Behind Mower
Series 12, 14, 15 & 16

19

2-90362-90522-4139--1-9795
1-71682-66912-64071-23541-23532-336406059

3 YEAR LIMITED WARRANTY
For three (3) years from purchase date for the original purchaser's residential, non-commercial use, SNAPPER, throughany authorized SNAPPER dealer will replace, free of charge (except for taxes where applicable), any part or parts foundupon examination by the factory at McDonough, Georgia, to be defective in material or workmanship or both.
For ninety (90) days 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 orabuse, 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 ninety(90) days from purchase for the original purchaser's commercial, rental or other non-residential use, and to theextent permitted by law, any and all implied warranties are excluded. This is the exclusive remedy. Liabilities forconsequential 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 orlimitation 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 SNAPPERASSOCIATED 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

20

PRIMARY MAINTENANCE

21

PRIMARY MAINTENANCE

22

PRIMARY MAINTENANCE

23

PRIMARY MAINTENANCE

24

NOTES______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
25

NOTES______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
26

NOTES______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
27

Safety Instructions & Operator’s Manual for

21” STEEL DECKWALK BEHIND MOWERSSERIES 12 & 14

IMPORTANTSnapper 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 andcritical safety warnings. Read, Understand, and Follow all warnings and instructions in this manual, theengine 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:The engine exhaust from this product contains chemicals known to the Stateof California to cause cancer, birth defects or other reproductive harm.

COPYRIGHT © 1999
SNAPPER INC.
ALL RIGHTS RESERVEDMANUAL No. 3-5743 (REV. 2, 9/2/99)28