Snapper Lawn Mower MR216518B MRP216518B User Manual

Safety Instructions & Operator’s Manual for  
21” STEEL DECK  
WALK MOWERS  
(TYPE ‘M’)  
SERIES 18  
MODELS  
MR216518B  
MRP216518B  
MODEL NUMBER EXPLANATION  
MR  
P
21  
65  
18  
B
MODEL DESIGNATION  
SELF-PROPELLED  
CUTTING WIDTH  
ENGINE DESIGNATION  
SERIES DESIGNATION  
ENGINE HORSE POWER *  
M – Model Designation  
R – Recycling Model  
P – Self Propelled Model  
21 – 21” Cutting Width  
65 – 6.5 HP *  
18 – Series Designation  
B – Briggs & Stratton  
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 - 4. 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.  
NOTE: Specifications are correct at time of printing and are subject to change without notice.  
* Actual sustained equipment horsepower will likely be lower due to operating limitations and environmental factors.  
COPYRIGHT © 2004  
SNAPPER – A DIVISION OF SIMPLICITY MFG., INC.  
ALL RIGHTS RESERVED  
MANUAL No. 2-9755 (I.R. 7/29/04)  
IMPORTANT SAFETY INSTRUCTIONS  
SAFE HANDLING OF GASOLINE  
(Continued From Previous Page)  
OPERATION  
(Continued From Previous Column)  
3. DO NOT remove fuel cap or add fuel with the engine  
running. Allow the engine to cool before refueling.  
4. DO NOT refuel the machine indoors.  
5. DO NOT store the machine or fuel container inside  
where there is an open flame, spark or pilot light  
such as on a water heater or other appliances.  
6. DO NOT fill fuel containers inside a vehicle or on a  
truck or trailer bed with a plastic liner. Always place  
the containers on the ground away from the vehicle  
before filling.  
7. Remove gas-powered equipment from the vehicle or  
trailer and refuel it on the ground. If this is not  
possible, then refuel equipment using a portable  
container, rather than a gasoline dispenser nozzle.  
8. DO NOT start gas powered equipment in enclosed  
vehicles or trailers.  
11. 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.  
12. STOP engine and wait until the blade comes to  
complete STOP before removing grass bag and/or  
clearing grass.  
13. DO NOT operate mower without the entire grass  
catcher, discharge guard, rear guard or other safety  
devices in place and working. DO NOT point discharge  
at people, passing cars, windows or doors.  
14. DO NOT discharge material against a wall or obstruction.  
Material may ricochet back towards the operator.  
15. Slow down before turning.  
16. Watch out for traffic when near or crossing  
roadways.  
9. Keep the nozzle in contact with the rim of the fuel  
tank or container opening at all times until fueling is  
complete. DO NOT use a nozzle lock-open device  
10. If fuel is spilled on clothing, change clothing  
immediately.  
17. DO NOT operate engine in enclosed areas. Engine  
exhaust gases contain carbon monoxide, a deadly  
poison.  
18. Only use accessories approved by the manufacturer. See  
manufacturer’s instructions for proper operation and  
installation of accessories.  
11. DO NOT overfill a fuel tank. Replace fuel cap and  
tighten securely.  
MAINTENANCE AND STORAGE  
OPERATION  
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 children in a well  
ventilated, unoccupied building.  
1. DO NOT put hands or feet near or under rotating  
parts. Keep clear of discharge area while engine is  
running.  
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.  
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 before starting.  
6. DO NOT mow near drop offs, ditches or  
embankments. Operator could lose footing or  
balance.  
7. STAY ALERT for holes and other hidden hazards.  
Tall grass can hide obstacles. Keep away from  
ditches, washouts, culverts, fences and protruding  
objects.  
3. When draining fuel tank, drain fuel into an approved  
container outdoors and away from open flame.  
4. Keep all bolts, especially blade bolts, nuts and  
screws properly tight. Check that all cotter pins are  
in proper position.  
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. 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. ALWAYS stay behind handle when engine (motor) is  
running.  
10. DO NOT leave the machine with the engine running.  
STOP BLADE and STOP ENGINE before leaving the  
operators position for any reason.  
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.  
3
IMPORTANT SAFETY INSTRUCTIONS  
MAINTENANCE AND STORAGE  
(Continued From Previous Page)  
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.  
4
TABLE OF CONTENTS  
IMPORTANT SAFETY INSTRUCTIONS...................................................................... 2 - 4  
TABLE OF CONTENTS......................................................................................................5  
SECTION 1 - FAMILIARIZATION.......................................................................................6  
SECTION 2 - OPERATING INSTRUCTIONS............................................................... 7-11  
Pre-start Checklist................................................................................................7  
Starting & Stopping Engine & Blades................................................................7  
Starting & Stopping Wheel Drive........................................................................8  
Handle Height Adjustment ..................................................................................8  
Cutting Height Adjustment..................................................................................8  
Recycling Operation.............................................................................................9  
Installation of Grass Catcher (Door Type)................................................... 9-10  
Installation of Grass Catcher (Slide Closure Type) ........................................10  
Installation of Discharge Deflector & Recycling Cover..................................11  
SECTION 3 - MAINTENANCE INSTRUCTIONS ....................................................... 12-13  
Change Engine Oil..............................................................................................12  
Check Transmission Grease....................................................................... 12-13  
Check Mower Blade ...........................................................................................13  
Check Engine Drive Belt....................................................................................13  
Check Transmission Poly-V Belt ......................................................................13  
Service - Annually ..............................................................................................13  
Engine ..............................................................................................................13  
Air Filter............................................................................................................13  
Engine Oil.........................................................................................................13  
Storage Procedure .............................................................................................13  
SECTION 4 - ADJUSTMENTS AND REPAIR............................................................ 14-21  
Mower Blade Replacement................................................................................14  
Blade Sharpening......................................................................................... 14-15  
Wheel Drive Control Adjustment ......................................................................15  
Driven and Drive Disc Service .................................................................... 16-19  
Cleaning Drive Disc and Driven Disc............................................................16  
Drive Spring Repair/Replacement.................................................................16  
Driven Disc Adjustment............................................................................ 16-17  
Driven Disc Replacement......................................................................... 17-18  
Driven Disc Bearing Replacement ................................................................18  
Hex Shaft Bearing Replacement....................................................................19  
Belt Service................................................................................................... 19-20  
Engine Drive Belt Replacement............................................................... 19-20  
Transmission Poly-V Belt Replacement .......................................................20  
Battery Service ...................................................................................................21  
TROUBLESHOOTING......................................................................................................22  
SERVICE SCHEDULE......................................................................................................23  
Maintenance/Replacement Parts......................................................................23  
WARRANTY......................................................................................................................24  
PRIMARY MAINTENANCE ........................................................................................ 25-28  
PRODUCT REGISTRATION FORM.................................................................................29  
5
Section 1 - FAMILIARIZATION  
WHEEL DRIVE  
CONTROL  
BLADE  
CONTROL  
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.  
GROUND SPEED  
CONTROL  
ROPE START  
HANDLE  
FUEL FILLER  
CAP  
OIL FILL CAP  
AND DIPSTICK  
REAR HEIGHT  
ADJUSTMENT  
LATCH  
ENGINE  
PRIMER  
RECYCLING  
COVER  
FRONT HEIGHT  
ADJUSTMENT  
LATCHES  
FIGURE 1.1  
1.1 INTRODUCTION  
1.2 NOMENCLATURE  
This manual has been prepared for the operators of  
the SNAPPER Type ‘M’ 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 - 4 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 Type ‘M’ 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.  
6
Section 2 - OPERATING INSTRUCTIONS  
2.1 PRE-START CHECK LIST  
2.2 STARTING & OPERATION  
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.  
2.2.1. ENGINE & BLADE  
1. Push primer button three times to start a cold  
engine. See Figure 2.3. NOTE: The primer should  
not be required to restart a warm engine.  
2.1.2. Check blade control and wheel drive control  
to insure they work freely. See Figure 2.1.  
PRIMER  
BUTTON  
(PUSH 3X)  
BLADE  
CONTROL  
WHEEL  
DRIVE  
CONTROL  
FIGURE 2.3  
2. Pull blade control against handle. See Figure  
2.4.  
FIGURE 2.1  
3. Pull rope start handle to crank engine.  
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.  
BLADE  
CONTROL  
ROPE START  
HANDLE  
FIGURE 2.4  
FIGURE 2.2  
4. After engine starts, allow a brief warm-up until  
engine runs smooth.  
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.  
NOTE: To stop the engine (and blade), release the blade  
control.  
2.1.6. Clean exterior surfaces of cutting deck and  
engine of any accumulation of spilled fuel, dirt, grass,  
oil, etc. Keep engine air intake screen and cooling  
fins clear at all times.  
7
Section 2 - OPERATING INSTRUCTIONS  
2.2 STARTING & OPERATION  
2. Move upper mower handle up or down until the  
desired position is achieved.  
2.2.2. PROPELLING MOWER  
(Self Propelled Models Only)  
1. Start engine. Refer to Section “Starting &  
Operation”.  
3. Tighten the lower nuts on each lower handle to  
maintain desired position.  
2. Move ground speed control to the desired speed  
position. See Figure 2.5.  
WARNING  
Stop engine and mower blade by releasing the blade  
control before adjusting cutting height.  
3. 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 2.5.  
2.5 CUTTING HEIGHT ADJUSTMENT  
1. Pull the height adjusting latch outward and move  
to desired cutting height. See Figure 2.7.  
ENGAGE  
LOWEST CUTTING  
HEIGHT  
1
LATCH  
WHEEL  
DRIVE  
CONTROL  
GROUND  
SPEED  
SIXTH  
CONTROL  
SHOWN IN  
FIRST/SLOW  
FIRST  
1
2
3
4
HIGHEST  
CUTTING  
HEIGHT  
6
5
FIGURE 2.5  
6
2.3 STOPPING  
Stop engine and blade by releasing the blade  
control. Stop forward motion of mower by releasing  
the wheel drive control.  
FIGURE 2.7  
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 2.8.  
1. Loosen the lower nuts on each lower handle as  
shown in Figure 2.6.  
HIGHER  
LATCH  
POSITIONS  
LOWER  
HANDLE  
LOWER  
CUTTING HEIGHT SETTINGS  
LOOSEN LOWER  
NUTS ON EACH  
LOWER HANDLE  
FIGURE 2.8  
FIGURE 2.6  
8
Section 2 - OPERATING INSTRUCTIONS  
2.8 INSTALLATION of RECYCLING PLUG  
(Optional Accessory on Some Models)  
STEP 1: Once adapter has been installed, recycling may  
be desired. Insert recycling plug completely and securely  
into adapter. Install grass bag. See Figure 2.10.  
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.  
INSERT RECYCLING PLUG  
COMPLETELY AND SECURELY  
PLUG  
INTO ADAPTER. INSTALL  
GRASS BAG.  
2.6 RECYCLING OPERATION  
NOTE: 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 ground speed control to slowest speed  
setting.  
ADAPTER  
3. 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.  
2.7 INSTALLATION of GRASS BAG ADAPTER  
(Optional accessory on some models)  
STEP 1: Install the grass bag adapter and secure to the  
side and top of the deck with the two nuts provided on the  
machine. Slot in front edge of adapter must be under nut  
located on top of deck. See Figure 2.9.  
FIGURE 2.10  
2.9 INSTALLATION of GRASS CATCHER – DOOR  
BAG  
ROUTE RECOIL  
ROPE AROUND  
ADAPTER PULLEY  
(Optional accessory on some models)  
Install grass catcher by sliding connector over flange  
of adapter. See Figure 2.11. Attach grass bag hooks  
over middle handle cross bar. See Figure 2.12.  
BE SURE  
ADAPTER SLOT  
SLIPS UNDER  
DECK NUT  
POSITION BAG  
BETWEEN HANDLES  
SECURE  
WITH NUTS  
SLIDE  
CONNECTOR  
DOWN OVER BAG  
ADAPTER FLANGE  
ADAPTER  
CONNECTOR  
FIGURE 2.9  
STEP 2: Route recoil rope around pulley on top of bag  
BAG  
adapter. See Figure 2.9.  
ADAPTER  
FIGURE 2.11  
(Continued On Next Page)  
9
Section 2 - OPERATING INSTRUCTIONS  
HOOK BAG  
HANDLE OVER  
LOWER HANDLES  
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.  
2.9 INSTALLATION of GRASS CATCHER – DOOR  
BAG  
(Optional accessory on some models)  
MIDDLE  
HANDLE  
CROSS BAR  
SLIDE CONNECTOR  
OVER END OF  
ADAPTER FLANGE  
FIGURE 2.14  
2.11 REMOVING and DUMPING GRASS CATCHER –  
Slide Closure Type  
1. Grasp bag connector and bag handle as shown.  
See Figure 2.13.  
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.  
ATTACH BAG HOOKS  
OVER MIDDLE HANDLE  
CROSS BAR  
FIGURE 2.12  
3. Dump bag by pulling bag slider off of Z-Fold at  
rear of bag, opening bag.  
2.10 INSTALLATION of GRASS CATCHER – Slide  
Closure Type  
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 2.15.  
(Optional accessory on some models)  
1. Position grass bag between handles. See  
Figure 2.13. Install grass catcher by sliding  
connector over flange of adapter. Attach grass  
bag hooks over middle handle cross bar. See  
Figure 2.14.  
LOWER HANDLES  
HANDLE  
GRASP SLIDER. PULL  
Z-FOLD INTO SLIDER  
BAG CONNECTOR  
PULL  
FIGURE 2.15  
ADAPTER  
FLANGE  
FIGURE 2.13  
10  
Section 2 - OPERATING INSTRUCTIONS  
2.13 INSTALLATION of RECYCLING COVER  
(Optional Accessory on Some Models)  
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.  
It will be necessary to remove bag adapter and grass  
bag or discharge deflector before installing recycling  
cover. See previous section for instructions. Install the  
recycling cover and secure to the side and top of the  
deck with the two nuts provided on the machine. Slide  
top portion of cover under nut secured to the deck. See  
Figure 2.17.  
2.12 INSTALLATION of DISCHARGE DEFLECTOR  
(Optional accessory on some models)  
RECYCLING  
COVER  
Install discharge deflector if discharging is desired.  
Grass Bag and Bag Adapter or Recycling Cover must  
be removed.  
1. Remove front and rear nuts that secure Bag  
Adapter or Recycling Cover to deck. Refer to  
sections concerning these parts.  
2. Install discharge deflector and secure to deck  
using hardware removed in Step 1. Slot in front  
edge of discharge deflector must be under nut as  
shown and both bolts protruding through holes in  
the side of the deflector. See Figure 2.16.  
SLIDE  
INSTALL  
DEFLECTOR SLOT  
UNDER NUT  
DISCHARGE  
DEFLECTOR  
ATTACH RECYCLING  
COVER TO THE DECK  
WITH TWO NUTS  
FIGURE 2.17  
WARNING  
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.  
INSTALL  
NUTS  
FIGURE 2.16  
WARNING  
Grass Catcher bags used on SNAPPER products  
are made of woven fabric, and are subject to  
deterioration and wear during normal usage.  
Check condition of bag before each use.  
Immediately replace worn or damaged catcher bags  
with only bags recommended by SNAPPER. The  
grass catcher is optional equipment on some  
models.  
11  
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. Dispose of drain oil properly.  
4. Fill engine with oil as specified in Engine Manual.  
Do Not overfill.  
3.2.2. CHECK GREASE LEVEL IN TRANSMISSION  
1. Remove transmission fill plug. Roll machine  
forward or backward while looking down into plug  
hole.  
2. 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.  
3.2 SERVICE - AFTER FIRST 5 HOURS  
3.2.1. CHANGE ENGINE OIL  
FILL PLUG  
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.  
1. Refer to Engine Manual for proper oil  
specifications, procedures and proper service  
intervals.  
2. For simplest/cleanest oil change, loosen lower  
handle nuts. Stand mower up on lower handle  
brackets as shown in Figure 3.1. Drain oil through  
dipstick tube into a container. Allow sufficient time for  
all oil to drain. NOTE: On self-propelled models,  
wheel drive rod prohibits handles from being folded.  
Simply turn mower on its side to drain oil.  
FIGURE 3.2  
NOTE: Snapper “00” Grease (Part No. 2-9443) is  
available at your SNAPPER dealer.  
FIGURE 3.1  
12  
Section 3 – MAINTENANCE  
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.  
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.  
RECOMMENDED  
BLADE RETAINING  
CAP SCREW TORQUE  
VALUE SHOULD BE  
40 FT. LBS.  
3.2.2. CHECK GREASE LEVEL IN TRANSMISSION  
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 of  
operation.  
FIGURE 3.4  
3.3 SERVICE - ANNUALLY  
Perform all maintenance as described in the “Service  
Schedule” section of this manual.  
3.3.1. Engine  
KEEP DRIVE DISC CLEAN!  
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.  
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.  
FIGURE 3.3  
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.  
5. Lubricate all exposed metal with a light coating  
of oil to prevent corrosion.  
6. On self-propelled models disconnect transfer  
rod clip and remove ground speed control rod  
before folding handles.  
IMPORTANT: Drain fuel tank before tipping mower. 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.  
3.2.3. CHECK MOWER BLADE  
1. Disconnect spark plug wire and secure end away  
from plug.  
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.  
7. Loosen handle knobs. Carefully fold the handles  
forward, “flexing” the control cables to prevent  
cable damage.  
4. Check blade for sharpness, wear and damage.  
Refer to Section “Blade Wear Limits”.  
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.  
8. Store the mower in a shed or other dry area,  
protected from weather.  
13  
Section 4 - REPAIR & ADJUSTMENTS  
2. Replace the blade if it is badly chipped, bent,  
WARNING  
noticeably out of balance or has cracks or notch in  
either tip. See Figure 4.1 & 4.1A. Replace with new  
blade.  
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.  
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.  
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.  
IMPORTANT: Drain fuel tank before tipping mower.  
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 BLADE  
WEAR LIMIT  
(NOTCH STARTS)  
DANGEROUS CONDITION !  
DO NOT USE ON MOWER !  
REPLACE WITH NEW  
BLADE.  
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 THAT  
BLADE HUB IS  
SEATED  
BETWEEN  
FLANGES  
BLADE  
HUB  
FIGURE 4.1  
FLANGE  
4.1.1.A. NINJA BLADE WEAR LIMIT  
1. Inspect blade frequently for signs of excessive  
wear or damage. See Figure 4.2.  
BLADE  
WEAR LIMIT.  
NEW BLADE  
CRACKS OR  
NOTCHES  
CONE WASHER  
(Concave Side Up)  
BEGIN TO  
APPEAR ON TIP  
CAPSCREW  
FIGURE 4.3  
DANGEROUS !  
DO NOT USE A BLADE IN  
THIS CONDITION !  
FIGURE 4.2  
14  
Section 4 - REPAIR & ADJUSTMENTS  
CLUTCH CABLE  
VINYL SPRING  
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.  
1/16” TO 1/8”  
CLEARANCE  
CLUTCH CABLE  
EYE  
UPPER  
SPRING  
SPRING HOOK  
LOWER  
SPRING  
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  
CLUTCH CABLE EYE  
22-28º  
BLADE TIP  
SPRING  
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 check  
clearance. Repeat procedure if required.  
5. Check blade for balance. If necessary, correct  
balance by grinding heavy end of blade.  
6. Reinstall blade. See Figure 4.3. Check torque of  
blade retaining cap screw. Recommended torque  
should be 40 ft. lbs.  
NOTE: The vinyl spring cover should be kept over the  
spring at all times except for adjustments.  
NOTE: The following sections 4.2 through  
4.4 are for self-propelled models only.  
4. If the wheel drive control fails to return quickly to  
the “OFF” position when released, check for binding  
at the cable holdings located on the side of the right  
handle. 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 with  
the 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  
cable eye with the wheel drive control released. See  
Figure 4.5.  
15  
Section 4 - REPAIR & ADJUSTMENTS  
IMPORTANT: If machine drive system continues  
slipping see Trouble Shooting section.  
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.  
USE  
NEEDLE  
NOSE  
PLIERS TO  
INSTALL  
DRIVE  
SPRING  
4.3 DRIVEN AND DRIVE DISC SERVICE  
If the mower does not propel itself properly, See  
Figure 4.6. Check for the following problems:  
DRIVEN DISC &  
RUBBER RING  
POLY-V  
BELT  
DRIVE  
SPRING  
DRIVE  
SPRING  
ENGINE  
DRIVE  
BELT  
DRIVE  
DISC  
FIGURE 4.7  
4.3.3. DRIVEN DISC ADJUSTMENT  
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 4.8.  
FIGURE 4.6  
1. Grease on drive disc causing slippage.  
2. Broken or disconnected drive spring.  
3. Driven disc is out of adjustment.  
4. Driven disc rubber is worn - does not contact  
drive disc properly.  
MOVE GROUND  
REYCLING MODEL SHOWN  
SPEED CONTROL TO  
(ROPE START MOUNTED ON  
SIX SPEED POSITION  
RIGHT SIDE OF HANDLE)  
5. Worn Poly-V Belt or engine drive belt.  
SIXTH SPEED  
POSITION  
NOTE: If any of the above (1 thru 5) are causing  
problems, service as follows:  
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.  
FIRST  
FIRST  
SPEED  
4. Dry components with a clean cloth.  
4.3.2. Drive Spring Repair/Replacement  
If drive spring is loose, reconnect as shown in Figure  
4.7. If spring is broken, replace with new spring.  
FIGURE 4.8  
16  
Section 4 - REPAIR & ADJUSTMENTS  
WARNING  
1/8” MEASUREMENT TO  
OUTSIDE EDGE OF DRIVE  
DISC  
DO NOT attempt any maintenance, adjustments or  
service with engine and blade running. STOP engine  
and blade. Disconnect spark plug wire and secure  
DRIVE  
DISC  
SLIDE DRIVEN  
away from spark plug. Engine and components are  
HOT. Avoid serious burns, allow sufficient time for  
all components to cool.  
DISC ASSEMBLY  
TOWARD OUTSIDE  
EDGE  
4.3.3. DRIVEN DISC ADJUSTMENT  
(Continued From Previous Page)  
2. Remove driven disc spring from driven disc  
assembly. Loosen connector hex nut. See Figure  
4.9.  
TRANSFER  
ROD  
OUTSIDE  
EDGE  
DRIVEN DISC  
ASSEMBLY  
CONNECTOR  
DRIVE  
DISC  
CONNECTOR  
HEX NUT  
FIGURE 4.10  
DRIVEN DISC  
SPRING  
CONNECTOR  
CLIP  
TRANSFER  
ROD  
CONNECTOR  
TRANSFER  
ROD  
CONNECTOR  
HEX NUT  
SPEED  
CONTROL  
ROD  
FIGURE 4.9  
3. Slide driven disc assembly over to 1/8” from  
outside edge of drive disc. Maintaining the 1/8”  
measurement, remove any looseness from the  
linkage. This can be done 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.  
REINSTALLED CLIP  
AND TRANSFER ROD  
CONNECTOR  
CLIP  
TRANSFER  
ROD  
SPEED  
CONTROL  
ROD  
4.3.4. Replacing Rubber Driven Disc  
If the rubber is badly chunked or worn it must be  
replaced. Install new Driven Disc 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.  
FIGURE 4.11  
17  
Section 4 - REPAIR & ADJUSTMENTS  
4.3.5. Replacing Bearing In Driven Disc Assembly  
WARNING  
IMPORTANT: The bearing, on these machines, is  
staked into the thrust plate. The bearing will have to be  
driven out with a mallet and a large punch. A new  
bearing with four retaining screws will have to be  
purchased to replace existing bearing.  
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.  
If the driven disc bearing requires replacement,  
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  
spring and slide the driven disc assembly off the  
hex shaft. See Figure 4.12.  
3. Remove both snap rings that secure rubber  
driven disc hub to thrust plate. See Figure 4.13.  
4. Slide the rubber driven disc hub out of the  
bearing.  
4.3.4. Replacing Rubber Driven Disc  
(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 4.12.  
3. Remove the two snap rings which secure the  
rubber driven disc to the driven disc assembly. See  
Figure 4.13.  
4. Install new rubber driven disc onto driven disc  
assembly with retaining rings.  
5. Reverse above procedures for reassembly and  
installation of driven disc assembly.  
5. Drive out existing bearing.  
6. Install new bearing and secure to thrust plate  
with four retaining screws. Tighten screws securely.  
7. Reassemble components in reverse order.  
DRIVEN DISC  
ASSEMBLY  
INSTALL NEW  
DRIVEN DISC  
SNAP  
RINGS  
FIGURE 4.13  
FIGURE 4.12  
18  
Section 4 - REPAIR & ADJUSTMENTS  
4.4 BELT SERVICE  
WARNING  
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 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  
FIGURE 4.15  
BALL BEARING  
“O” RING  
3/8”  
LOCK NUT  
BALL BEARING  
HOLDER  
FIGURE 4.14  
19  
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 secure  
away from spark plug. Engine and components are  
DRIVE DISC  
SLOT IN END  
OF DRIVE DISC  
BOLT  
HOT. Avoid serious burns, allow sufficient time for  
all components to cool.  
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 mower.  
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.  
LOCK WASHER  
NUT  
3. Remove the driven disc.  
“Replacing Rubber Driven Disc” for driven disc  
assembly removal procedure.  
Refer to Section  
FIGURE 4.16  
4.4.2. Transmission Poly-V Belt Replacement  
1. Remove the driven disc. Refer to Section  
”Re4placing Rubber Driven Disc“ for procedure.  
2. Note the routing of the old belt around the three  
pulleys before removing it. See Figure 4.17.  
3. Place new Poly-V Belt over end of hex shaft and  
onto driven pulley.  
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.  
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.  
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.  
6. Adjust clutch cable. Refer to Section “Wheel  
Drive Control Adjustment:”.  
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.  
IDLER  
DIFFERENTIAL  
PULLEY  
BRACKET  
DRIVE  
PULLEY  
POLY-V  
BELT  
11. Reinstall belt cover and tighten bolts securely.  
12. Reinstall blade hub and cutter blade.  
Recommended torque for blade cap screw is 40 ft. lbs.  
HEX SHAFT  
DRIVEN  
PULLEY  
BELT GUIDE  
ROUTING OF POLY-V BELT  
FIGURE 4.17  
20  
Section 4 - REPAIR & ADJUSTMENTS  
4.5. BATTERY SERVICE  
4.5.2. BATTERY SERVICE  
1. Remove battery.  
2. Place battery in a well ventilated area on a level  
surface.  
3. Using distilled water, refill cells as required to bring  
fluid to proper level.  
4. With cell caps removed, connect battery charger to  
battery terminals. Red to positive (+) terminal and  
black to negative (-) terminal.  
5. Slow charge battery at 1 amp for 10 hours.  
6. If battery will not accept charge or is partially  
charged after 10 hours of charging at 1 amp, replace  
with new battery.  
4.5.1. NEW BATTERY PREPARATION  
1. Remove battery from carton.  
2. Place battery in a well ventilated area on a level  
non-concrete surface.  
3. Remove battery cell caps. Fill cells with electrolyte  
to proper level. Filling battery with electrolyte will bring  
the battery to 80% charged state.  
4. With cell caps removed, connect battery charger to  
battery terminals; RED to positive (+) and BLACK to  
negative (-) terminal.  
IMPORTANT: Never place anything in battery other than  
specified electrolyte.  
4.5.3. BATTERY STORAGE  
5. Slow charge the battery at 1 amp for 2 hours to  
bring the battery to full charge.  
6. After charging, check level of electrolyte and add  
as needed to bring to proper level.  
If Walk Behind is to be stored out of season on its rear  
bumper, it is recommended the battery be removed,  
charged and stored.  
1. Remove battery.  
7. Reinstall cell caps.  
8. Install battery into power unit.  
2. Perform battery service.  
3. Bring battery to full charge, if required.  
4. Store battery in an area away from the Walk  
Behind on a wood surface. DO NOT STORE  
BATTERY ON A CONCRETE SURFACE.  
9. Connect positive (+) cable (red) first, from wiring  
harness to the positive terminal (+) on battery using  
bolt and nut provided in hardware bag. Connect  
negative (-) cable (black) last, to negative terminal (-)  
on battery using bolt and nut. Apply a small amount of  
grease over terminals to prevent corrosion.  
4.5.4. BATTERY TESTING  
There are two types of battery tests: Unloaded and  
Loaded. The unloaded test is the procedure that will  
be discussed. It’s the simplest and most commonly  
used. An unloaded test is made on a battery without  
discharging current. To perform unloaded testing,  
check charge condition using either a hydrometer or  
voltmeter.  
WARNING  
DO NOT over fill battery with electrolyte. Shield the  
positive terminal with terminal cover located on battery  
harness. This prevents metal from touching the  
positive terminal, which could cause sparks. The  
electrolyte (acid) produces a highly explosive gas.  
Keep all sparks, flame and fire away from area when  
charging battery or when handling electrolyte or  
battery. Electrolyte (acid) is a highly corrosive liquid.  
Wear eye protection. Wash affected areas immediately  
after having eye or skin contact with electrolyte (acid).  
Battery acid is corrosive. Rinse empty acid containers  
with water and mutilate before discarding. If acid is  
spilled on battery, bench, or clothing, etc., Flush with  
clear water and neutralize with baking soda. Never  
attempt to charge battery while installed on the walk  
behind. Never use “BOOST” chargers on the battery.  
1. Using a voltmeter, voltage readings appear  
instantly to show the state of charge. Remember to  
hook the positive lead to the battery’s positive  
terminal, and the negative lead to the negative  
terminal.  
2. A hydrometer measures the specific gravity of  
each cell. The specific gravity tells the degree of  
charge; generally, a specific gravity of about 1.265 to  
1.280 indicates full charge. A reading of 1.230 to  
1.260 indicates the battery should be charged. The  
chart on the next page shows the charge level as  
measured by syringe float hydrometer, digital  
voltmeter and five ball hydrometer.  
4.5.4. BATTERY TESTING  
Methods of Checking Battery Condition  
State of Charge  
100% Charged w/ Sulfate Stop  
100% Charged  
75% Charged  
50% Charged  
Syringe Hydrometer  
Digital Voltmeter  
Five Ball Hydrometer  
Five Balls Floating  
Four Balls Floating  
Three Balls Floating  
Two Balls Floating  
One Ball Floating  
1.280  
12.80v  
1.265  
1.210  
12.60v  
12.40v  
1.160  
12.10v  
25% Charged  
1.120  
11.90v  
0% Charged  
Less than 1.100  
Less than 11.80v  
Zero Balls Floating  
21  
TROUBLESHOOTING  
PROBLEM  
PROBABLE CAUSE  
CORRECTIVE ACTION  
Engine Will Not Start 1. Fuel tank empty.  
Using Recoil Starter 2. Engine needs priming.  
3. Spark plug wire disconnected.  
1. Fill fuel tank with fresh fuel.  
2. Prime. Check Engine Manual for Instructions.  
3. Place spark plug wire onto spark plug.  
Engine Stalls or Stops 1. Blade control is released or is not being held securely 1. Blade control should be held securely against  
After Running  
against handle.  
handle at all times during operation of mower.  
2. Fuel tank empty.  
2. Fill with fuel to proper level.  
3. Engine air pre-cleaner and or air cleaner dirty.  
4. Spark plug defective or gap set improperly.  
5. Water, debris or stale fuel in fuel system.  
3. Clean free of all debris.  
4. Service spark plug.  
5. Drain and clean fuel system.  
1. Clean or replace filters.  
Engine Loses Power 1. Engine air pre-cleaner or air cleaner dirty  
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 blade.  
2. Loose blade components.  
1. Service mower blade.  
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. Forward ground speed too fast.  
3. Terraced cut, side to side.  
1. Adjust cutting height.  
Cutting Grass  
Improperly  
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.  
1. Move ground speed control to a slower speed.  
2. Mow when grass is dry.  
4. Excessive deck pitch, front to rear.  
5. Cutting blade dull or damaged.  
1. Forward speed too fast.  
Poor Grass Discharge  
2. Grass is wet.  
3. Excessively worn or damaged blade.  
4. Build up of grass clippings and debris under deck.  
5. Improper blade installed on deck.  
6. Blade installed improperly on deck.  
1. Leaking engine case.  
3. Service mower blade.  
4. Clean deck.  
5. Install proper SNAPPER blade.  
6. Install blade 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.  
22  
SERVICE SCHEDULE  
ITEM  
SERVICE PERFORMED  
REF.  
Page 7  
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 12  
Page 13  
X
X*  
Clean Sponge Element  
Clean or Replace  
Replace  
Engine Manual  
Engine Manual  
Engine Manual  
Engine Manual  
Pages 13, 19  
Air Pre-Cleaner  
Air Cleaner  
X**  
X**  
Spark Plug  
X
Clean Shroud & Fins  
Engine Cooling  
System  
X**  
Check For Wear And  
Tension  
Check For Wear, Damage Pages 14-15  
& Replacement  
Clean Debris  
Accumulation  
Drive Belts  
X
X
X
X
Mower Blade  
Mower Deck  
X
X
Page 7  
Check Grease Level  
Page 13  
Transmission  
Grease  
X
X
Periodic Grease Check  
Page 13  
Check for Wear Damage Pages 16-18  
& 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  
Blade Control Cable  
3-4608  
3-4604  
1-9795  
1-7168  
2-6691  
2-6407  
1-2354  
4-6784  
5-7668  
4-1855  
06138  
Clutch Pull Cable (See Parts Manual)  
Cutter Blade (Air Lift Compatible)  
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  
Cantilever Drive Tire Assembly  
Rubber Drive Tire  
Parts Manual for 21” Steel Deck Walk Behind Mower Type ‘M’ Series 18  
23  
2 YEAR LIMITED WARRANTY  
For two (2) 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 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 certain transmissions, 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 warranty period with free replacement if required for one (1) year 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 two (2)  
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 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  
24  
PRIMARY MAINTENANCE  
25  
PRIMARY MAINTENANCE  
26  
PRIMARY MAINTENANCE  
27  
PRIMARY MAINTENANCE  
28  
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.  
29  
NOTES  
30  
NOTES  
31  
Safety Instructions & Operator’s Manual for  
21” STEEL DECK  
WALK BEHIND MOWERS (TYPE ‘M’)  
SERIES 18  
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 © 2004  
SNAPPER – A DIVISION OF SIMPLICITY MFG., INC.  
ALL RIGHTS RESERVED  
MANUAL No. 2-9755 (I.R. 7/29/04)  
32  

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