Snapper 7800422 (NSPV21675E), 7800422, 7800421 (NSPV21675), 7800421, 7800417 (SPV21675E) Owner’s Manual

...

SafetyInstructions& Operator'sManualfor

21" VARIABLESPEED

REARDISCHARGE

WALKBEHIND

MOWERS

SPV21675(7800179)

SPV21675E(7800417)

NSPV21675(7800421)

NSPV21675E(7800422)

Models

NOTE:Specificationsarecorrectattimeof printingandaresubjecttochangewithoutnotice. * Actualsustainedenginepowerwilllikelybelowerdueto operatinglimitationsandenvironmentalfactors. Pleasereferto 'EnginePowerRatingInformation'for further

details.

$1tlAPPER.coo°oo_,,o,..,o_,,o._.,. Manual No. 7103136 (Rev.'-', 12/19/2008)

ThankYou for purchasingthis quality-built Snappermower.We're pleasedthat you placedyour confidenceinthe Snapperbrand.When operatedand maintainedaccordingto the instructions in this

manual,your Snappermowerwill provide manyyearsof dependableservice.

This manual contains safety information to make you aware of the hazards and risks associated with the machine and how to avoid them. This machine is designed and intended only for finish cutting of

established lawns and is not intended for any other purpose. It is important that you read and understand these instructions thoroughly before attempting to start or operate this equipment. Save these

instructions for future reference.

PRODUCT REGISTRATION

IMPORTANT:KEEPTHISINFORMATIONFORYOURPERSONALRECORDS (Completethe following information on your Snapperpurchase)

Dateof Purchase

Retailer

Retailer's PhoneNumber

Equipment

Model Number

Serial Number

Engine

Model .Type. Trim

It is very importantthat you registeryour purchasewith Snapperto ensure warrantycoverage.Please mail your product registration cardto:

Snapperat P.O.Box 1379, McDonough,Georgia30253.

You can contact us at ourwebsite (www.snapper.com),or if you would like to speakwith a Customer ServiceRepresentative,call us atthe SnapperCustomerRelationsCenterat 1-800-317-7833. Forfaster servicepleasehaveyour SerialNumber and Model Numberavailable.

SNAPPERis a trademark of Briggs & Stratton Yard Power Products Group, LLC

Jefferson, Wl, USA.

Briggs & Stratton Yard Power Products Group

Tableof Contents

OperatorSafety ........................................................ 4

Important OperatorSafety Instructions .................................. 4

Featuresand Controls ................................................... 6

Operation ............................................................. 7

Pre-Start Checklist .................................................. 7

Starting & Stopping Engine& Blade ..................................... 7

Propelling Mower ................................................... 8

HandleHeight Adjustment ............................................ 8

Cutting Height Adjustment ............................................ 9

Recycling Operation ................................................. 9

Installing the DischargeDeflector ...................................... 10

Removingthe Recycling Plug ......................................... 10

Installing the Grass Bag ............................................. 10

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Maintenance .......................................................... 11

ChangeEngine Oil .................................................. 11

CheckMower Blade ................................................ 11

CheckEngineDrive Belt ............................................. 11

Service - Periodic .................................................. 11

Engine ........................................................... 11

Air Filter ......................................................... 11

Engine Oil ........................................................ 11

WheelDrive Components ............................................ 12

Storage Procedure ................................................. 12

Mower Blade Replacement ........................................... 13

BladeSharpening .................................................. 13

WheelDrive Control Adjustment ....................................... 14

Belt Service ....................................................... 15

Engine Drive Belt Replacement ........................................ 15

Battery Service .................................................... 16

RearCover Removal& Installation ..................................... 17

Service Schedule................................................... 18

Troubleshooting ....................................................... 19

Warranty ............................................................ 20

Slope Guide .......................................................... 21

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WARNING

Batteryposts, terminals and relatedaccessoriescontain

lead and lead compounds, chemicals known to the State of California to cause cancer and birth defects or other

reproductiveharm. Wash handsafter handling.

WARNING

Engineexhaust,someof its constituents, and certain vehicle components contain or emit chemicals known to the State of California to causecancer or other reproductive

harm.

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IMPORTANTOPERATORSAFETYINSTRUCTIONS

WARNING:This powerful cutting machineis capableof amputating handsand feet and can throw objects that can cause injury and damage! Failureto comply with the following SAFETYinstructions could result in

serious injury or deathto the operator or other persons.The owner of the machine must understand these instructions and must allow only persons who understandthese instructions to operate machine.Each personoperating the machine must be of sound mind and body and must not be under the influenceof any substance,which might impair vision, dexterity or judgment. If you haveany questions pertaining to your machinewhich your dealer cannot answer to your satisfaction, call or write the Customer Service Departmentat SNAPPER,IVIcDonough,Georgia30253. Phone:(1-800-317-7833).

PROTECTIONFORCHILDREN

Tragic accidents canoccur if the operator is not alert to the

presenceof children. Children are often attracted to the machine andthe mowing activity. Neverassume that

children will remain whereyou last saw them.

1. KEEPchildren out of the mowing area and underthe

watchful careof a responsible adult other than the operator.

2. DO NOTallow children in yard when machine is operated andturn machine OFFif anyoneenters the area.

3. DO NOTallow pre-teenagechildren to operate machine.

4. ALLOW only responsible adults & teenagerswith mature judgment under close adult supervision to operate machine.

5. DO NOTpull mower backwards unless absolutely necessary.LOOKand SEEbehind and down for children,

pets and hazards beforeand while backing.

6. USEEXTRACAREwhen approaching blind corners, shrubs, trees, or other objects that may obscure vision.

SLOPE OPERATION

1. Slopes are amajor factor relatedto slip and fall accidents,which can result in severeinjury. All slopes require extra caution. If you feel uneasyon aslope, DONOT

mow it.

2. Mow across slopes, never up-and-down. Exercise extremeCAUTIONwhen changing directions on slopes. DO NOTmow steep slopes or other areas where stability or

traction is in doubt. Referto the Slope Guideat the back of this manual.

3. Useextra care with grass catchers or other attachments;

these affect the handling and the stability of the machine.

PREPARATION

1. Read,understand, andfollow instructions and warnings in this manualand on the mower, engine and attachments. Knowthe controls and the proper use of the mower before starting.

2. Only mature, responsible persons shall operatethe machine and only after proper instruction.

3. Data indicates that operators age 60 and above,are involved in a large percentageof mower-related injuries.

Theseoperators should evaluatetheir ability to operate the

mower safely enough to protect themselvesand others

from serious injury.

4. Handlefuel with extracare. Fuelsareflammable and vapors are explosive. Useonly an approved fuel container.

DONOTremovefuel capor add fuel with engine running.

PREPARATION

(ContinuedFromPrevious Column)

Add fuel outdoors only with engine stopped and cool. Clean spilled fuel and oil from machine. DONOTsmoke.

5. Checkthe areato be mowed and removeall objects such as toys, wire, rocks, limbs and other objects that could cause injury if thrown by bladeor interfere with mowing. Also note the locationof holes, stumps, and other possible

hazards.

6. Keeppeople and pets out of the mowing area. Immediately,STOPBlade,Stop engine and Stop mower if

anyone enters the area.

7. Checkshields, deflectors, switches, blade controls and

other safety devices frequently for proper operation and

location.

8. Make sure all safety decals are clearly legible. Replaceif

damaged.

9. Protect yourself when mowing and wear safety glasses, long pants and substantial footwear. DONOTmow

barefootedor with sandals.

10. Know how to STOPbladeand engine quickly in preparationfor emergencies.

11. Use extra carewhen loading or unloading the machine into a trailer or truck.

12. Checkgrass catchercomponents frequently for signs of

wear or deterioration and replaceas neededto prevent

injury from thrown objects going through weak or torn

spots.

SAFEHANDLINGOFGASOLINE

Toavoid personal injury or property damage, useextreme care in handling gasoline. Gasolineis extremely flammable and the vapors are explosive.

1. Extinguish all cigarettes, cigars, pipes and other sources

of ignition.

2. Use only an approvedfuel container.

3. DO NOTremovefuel cap or add fuel with the engine running. Allow the engineto cool before refueling.

4. DO NOTrefuelthe machine indoors.

5. DO NOTstore the machine or fuel container inside where

there is an open flame, sparkor pilot light such as on a water heateror other appliances.

6. DO NOTfill fuel containers inside a vehicle or on a

truck or trailer bed with a plastic liner.Always placethe containers on the ground awayfrom the vehicle before filling.

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IMPORTANTOPERATORSAFETYINSTRUCTIONS(Continued)

SAFEHANDLING OF GASOLINE

(ContinuedFrom PreviousPage)

7. Remove gas-poweredequipment from the vehicle or trailer and refuelit on the ground. If this is not possible, then refuel equipment using a portablecontainer, rather than a gasoline dispenser nozzle.

8. DO NOTstart gas poweredequipment in enclosed vehicles or trailers.

9. Keepthe nozzlein contactwith the rim of the fuel tank or

container opening at all times until fueling is complete. DO NOTusea nozzle lock-open device

10. If fuel is spilled on clothing, change clothing

immediately.

11. DO NOToverfill a fuel tank. Replacefuel cap and tighten

securely.

OPERATION

1. DO NOTput handsor feet near or under rotating parts.

Keepclearof discharge areawhile engine is running.

2. STOPenginewhen crossing gravel drives, walks, or

roads, and under anyconditions where thrown objects might be a hazard.

3. Mow only in daylight or good artificial light.

4. DO NOToperatemower while under the influence of

alcohol or drugs.

5.After striking a foreign object or if mower vibrates

abnormally,STOPthe engine,disconnect and secure spark plug wire. Inspect the mower for any damageand repair the damagebeforestarting.

6. DO NOTmow near drop offs, ditches or embankments.

Operatorcould lose footing or balance.

7. STAYALERTfor holes and other hidden hazards.Tall

grass can hide obstacles. Keepawayfrom ditches,

washouts, culverts, fencesand protruding objects.

8. DO NOTmow on wet grass. Always be sure of your footing. Keepafirm hold on the handleandwalk, neverrun.

Slipping could cause injury.

9.ALWAYSstay behind handlewhen engine (motor) is

running.

10. DO NOTleavethe machinewith the enginerunning.

STOPBLADEandSTOPENGINEbeforeleavingthe operators position for any reason.

11. Before cleaning, repairing or inspecting make certain

engine,blade and all moving parts haveSTOPPED. Disconnectand secure spark plug wire awayfrom plug to prevent accidentalstarting.

12. STOPengineandwait until the bladecomes to

completeSTOPbeforeremoving grass bag and/or clearing grass.

13. DO NOToperatemower without the entire grass

catcher,or guards in place discharge guard, rearguard or other safety devicesin place and working. DONOTpoint discharge at people, passingcars, windows or doors.

OPERATION

(ContinuedFromPrevious Column)

14. DO NOTdischargematerial against a wall or obstruction. Material may ricochet back towards the operator.

15. Slow down beforeturning.

16. Watch out for traffic when near or crossing roadways.

17. DO NOToperateengine in enclosedareas. Engine exhaust gasescontain carbon monoxide, a deadly poison.

18. Only use accessoriesapprovedby the manufacturer. See manufacturer'sinstructions for proper operation and

installation of accessories.

MAINTENANCE AND STORAGE

1. DO NOTstore mower or fuel container inside where fumes may reach an open flame, spark or pilot light such as

in awater heater,furnace, clothes dryer or other gas

appliance. Allow engine to cool before storing machine in an enclosure.Store fuel container out of reachof children

in awell ventilated, unoccupied building.

2. Keepmower and engine free of grass, leavesor excess greaseto reducefire hazardand engine overheating.

3. When draining fuel tank, drain fuel into an approved container outdoors and away from open flame.

4. Keepall bolts, especially bladebolts, nuts and screws

properly tight. Checkthat all cotter pins are in proper position.

5. Always provide adequate ventilation when running engine. Engineexhaust gasescontain carbon monoxide, a deadly poison.

6. Serviceengine and makeadjustments only when engine

is stopped. Removedspark plug wire from spark plug and secure wire awayfrom spark plug to prevent accidental starting.

7. DO NOTchangeengine governor speedsettings or overspeed engine.

8. Checkgrass bag assembly frequently for wear or deterioration to avoidthrown objects and exposure to

moving parts. Replacewith new bag if loose seamsor tears are evident. Replaceslider or bag adapterif brokenor

cracked.

9. Mower bladesare sharp andcan cut. Wrap the bladesor wear heavy leather glovesand useCAUTIONwhen handling

them.

10. DO NOTtest for spark by grounding spark plug next to

spark plug hole; sparkplug could ignite gas exiting engine.

11. Havemachine serviced by an authorized SNAPPER

dealer at least once ayear and havethe dealerinstall any

newsafety devices.

12. Use only genuine SNAPPERreplacementparts to

assure that original standards are maintained.

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IMPORTANT

The figures and illustrations in this manualare provided for referenceonly and may differ from your specific model,

Contactyour Snapperdealer if you have questions.

FeaturesandControls

A. Oil Fill Capand Dipstick

B. FuelFillerCap C. RecyclingCover

D. Battery Box E. Height Adjustment Lever

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F. G. H. I, J.

BladeControl RopeStart Handle

Drive WheelControl RearDischargeDoor

Grass Bag

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Pre-StartCheckList

Make the following checks andperform the service required before each start-up.

1. Checkthe guards, deflectors, grass bag,and covers to make sure all are in place and securelytightened.

2. Checkthe blade control (A, Figure1) and wheel drive control (B) to insure they work freely.

StartingandOperation

EngineandBlade

1. Pull the blade control (A, Figure3) againstthe handle.

2. Start the mower: ManualStart Models: Pull the rope start handle (B)

to crank the engine.

ElectricStart Models: Insert the key (C) into the ignition switch (D), located on the right side of the

handle abovethe ropeguide. Turnthe keyto crank the engine.

3. After the enginestarts, allow a brief warm-up until the

engine runs smooth before beginning mower operation.

NOTE.Tostop the engine (and blade), releasethe blade

control.

Figure 1: Mower controls

3. Checkthe cutting height. Adjust to the desired height. Refer to the Section 'Cutting Height Adjustment'.

4. Checkthe engineoil and add oil as neededto bring the level up to the full mark (A, Figure2). Referto the Engine Owner'sManualfor oil specifications.

Figure2: Checkingengine oil

5. Add fuel to the tankafter pushing the mower outside wherefumes can safely dissipate. Fill the tank to 1-1/2 inches belowthe top of the filler neck(to allow for fuel expansion). Makesure the cap is tightened after fueling. Refer to the EngineOwners Manualfor fuel specifications.

6. Cleanthe exterior surfaces of the cutting deck and engine of any accumulation of spilled fuel, dirt, grass, oil, etc. Keepthe engine air intakescreen and cooling

fins clear at all times.

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Figure3: Starting the mower

StartingandOperation(Continued)

Propellingthe Mower

1. Start the engine. Referto the Section entitled "Starting and Operation- Engine and Blade".

2. Begin squeezingthe wheel drive control (A, Figure4) back toward the handle to engagethe wheel drive and

propel the mower forward. Forward speed can be increased by squeezingthe wheeldrive control further

back toward the handle.

HandleHeightAdjustment

Theheight of the mower handle can beadjustedas follows:

1. Turnthe two locking cams (A, Figure5) a quarter-turn to unlock the handle assembly (B).

2. Align the handle assemblywith one of the three handle height adjustment holes (C) in the mounting brackets.

3. Returnthe locking cams to their original position to lock the handle.

Figure4: Wheeldrive control (Components removed for clarity)

Stopping

1. Stop forward motion of the mower by releasingthe wheeldrive control.

2. Stop the engine and blade by releasingthe blade control.

Figure5: Adjusting the handleheight

WARNING

DONOTattempt anymaintenance,adjustments or service with engine and blade running. STOPengine andblade. Disconnectspark plug wire and secureaway from spark plug. Engineand components are HOT.Avoid serious burns, allow sufficient time for all components to cool.

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WARNING

DONOTattempt any maintenance,adjustments or service

with engine and blade running. STOPengine andblade.

Disconnectspark plug wire and secure away from spark plug. Engineand components are HOT.Avoid serious burns, allow sufficient time for all components to cool.

CuttingHeightAdjustment

1. Pull the height adjusting lever(A, Figure 6) outward, and

move to the desired cutting height. Thehighest cutting position is Notch 9 (B; also see Figure7). The lowest cutting position is Notch 1 (C).

Note: The/ever wi// setaftwhee/s to the same cutting height.

WARNING

Stop engineand mower blade by releasingthe blade

control before adjusting cutting height.

1.50 in _ 4.00 in

Figure7: Cutting height settings (approximate)

RecyclingOperation

Note:Forbest recycling results, cut up to a maximum of 1/3

of grass blade length and recycleONLYwhen grass is dry.

1. Setthe height adjustment leverin the highest cutting position (Notch 9). Referto the Section entitled "Cutting

HeightAdjustment".

2. Proceedmowing slowly. If the grass is very dense, lower the height adjustmentlever one notch lower to improve recycling performance.

InstallingtheDischargeDeflector

1. Raisethe recycling cover (A, Figure8).

Important. The recyclingcover should remainon the

machine at all times. Donot remove.

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Figure6:Adjusting cutting height

Figure 8: Installing the discharge deflector

2. Install the deflector (B) to the deck underthe recycling cover,making sure that:

Thetabs (C) hook under the pivot rod (D). Thelocking tab on the deck (A, Figure9) goes through the slot in the deflector (B).

3. Lowerthe recycling cover against the deflector.

WARNING

DONOTattempt any maintenance,adjustments or service

with engine and blade running. STOPengine andblade.

Disconnectspark plug wire and secure away from spark plug. Engineand components are HOT.Avoid serious burns, allow sufficient time for all components to cool.

InstallingtheGrassBag

1. Raisethe rear discharge door (A, Figure11).

2. Removethe recycling plug. Referto the section entitled "Removing the Recycling Plug".

3. Holdingthe grass bag handle (B), install the grass bag onto the back of the mower, making sure that the grass bag hooks (A, Figure 12) are hookedonto the reardoor pivot rod (B).

Figure9: Deflector locking tab

Figure 11. Installing thegrass bag

Removingthe RecyclingPlug

1. Raisethe rear discharge door (A, Figure 10).

2. Removethe recycling plug (B) from the rear discharge chute.

Note.The recycling plug should be removed only when bagging is desired, and should be replacedas soon as bagging operations are completed.

Figure 12: Grassbag hooks

WARNING

Grass Catcherbags usedon SNAPPERproducts are made of woven fabric, and are subject to deterioration and wear

during normal usage. Checkcondition of bag before each use. Immediately replaceworn or damagedcatcherbags

with only bags recommendedby SNAPPER.The grass

Figure 10: Removing the recycling plug

catcher is optional equipment on some models.

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Maintenance-Introduction

Toretain the quality of the mower,use genuineSNAPPER replacementparts only. Contact a local SNAPPERdealer for parts and service assistance.Forthe correct part or information for a particular mower, always mention the

model and serial number.

CheckMower Blade

1. Disconnectthe spark plug wire andsecurethe end away from the plug.

2. Tilt the mower up on its rear wheelsfor access to the blade capscrew (A, Figure14). Do not tilt the mower with the spark plug or carburetor down.

WARNING

DONOTattempt any maintenance,adjustments or service

with engine and blade running. STOPengine andblade.

Disconnectspark plug wire and secure away from spark plug. Engineand components are HOT.Avoid serious burns, allow sufficient time for all components to cool. Wearheavy leathergloveswhen handling or working around cutting blades.Bladesare extremely sharp andcan causesevereinjury.

Service- AfterFirst5 Hours

ChangeEngineOil

Refer to the EngineManualfor proper oil specifications, procedures and proper service intervals.

Forthe simplest/cleanest oil change,simply turn the mower on its sideto drain the oil, asshown. Drainthe

oil through the dipstick tube (A, Figure 13) into a con- tainer.Allow sufficient time for all the oil to drain.

Important: Drain the fuel tank beforetipping the machine. DONOTtip the machinewith the carburetor or spark plug

down. Oil from the crankcasewill saturate the air filter and causethe engineto be hard to start or not start at all. If

contamination doesoccur, the air filter will haveto be replaced.

Important: Drain the fuel tank beforetipping the mower. DO NOTtip the machinewith the carburetor or spark plug down.

Oil from the crankcasewill saturatethe air filter andcause the engine to be hard to start or not start at all. If

contamination does occur, the air filter will haveto be

replaced.

Figure 14: Tightening the blade cap screw

3. Checkthe torque of the bladecap screw. Recommended torque should be 40 ft. Ibs.

4. Checkthe bladefor sharpness, wear and damage. Refer to the Section entitled "BladeWear Limits".

CheckEngineDriveBelt

1. Visually checkthe engine drive belt for cracking, fraying, severedor exposed belt strands. If worn or damaged,

replacethe belt before operating the mower.

Figure 13: Draining the engine oil

3. Disposeof drain oil properly.

4. Fill the enginewith oil as specified in the EngineManual. Do Not overfill.

Service- Periodic

Perform all maintenanceas described in the "Service

Schedule" section of this manual.

Engine

Service the engine according to the engineowner's manual.

Air Filter

Referto the engine owner's manualfor service instructions.

EngineOil

Referto the engine owner's manualfor service instructions.

WARNING

DONOTattempt any maintenance,adjustments or service

with engine and blade running. STOPengine andblade.

WheelDriveComponents

1. Removethe rear cover. Referto the Section entitled

"Rear Cover Removal& Installation".

2. Cleanany debris buildup on or around thetransmission,

axles,idler, pulleys, belt, etc., as well as on the insideof the cover. Checkcomponents for wear or damage. Replaceworn or damaged components immediately.

3. Replacethe rear cover.

Important: DO NOToperatethe mower without the rear cover securely in place.

StorageProcedure

Refer to the EngineOwner'sManualfor directions regarding engine storage preparations. Preparethe mower for "end of season"storage as follows:

1. Drain the fuel from the fuel tank and letthe engine run

until all fuel is out of the carburetor.

2. Disconnect and remove the spark plug wire awayfrom

the spark plug beforeany other preparations are made!

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3. Tapeall openings closed to prevent spraying water into

the exhaust or air intakesduring washing.

4. Tilt the mower up on its rearwheels andthoroughly cleanthe underside of the deck. Do not tilt the mower

with the spark plug or carburetor down. Scrapeaway 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. Carefullyfold the handles, "flexing" the control cablesto prevent cabledamage.

7. Store the mower in a shed or other dry area,protected from weather.

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WARNING

DONOTattempt any maintenance,adjustments or service

with engine and blade running. STOPengine andblade.

MowerBladeReplacement

StandardBladeWearLimit

1. Inspect the blade(Figure 15) frequently for signs of

excessivewear or damage: (A) New blade (B) Wear limit (notch starts) (C) Dangerous condition! Do not use on the mower!

Replacewith a newblade.

Figure 15: Mower blade wearfimits

3. Removethe blade (B, Figure 16).

Makesure that bladehub is seated

[betweenf anges

Figure 16: Removingthe mower blade

4. Sharpenthe bladeon a grinding wheel at anangleof 22 to 28 degrees (B, Figure 17). DO NOTsharpenthe blade

beyondthe original cutting edge(A).

5. Checkbladefor balance.If necessary,correct balanceby grinding heavyend of blade.

6. Reinstallblade(B, Figure16). Notethe correct assem- bly order:

(A) Blade hub (B) Blade (C) Bladeflange (facing up) (D) Conewasher (concave side up) (E) Capscrew

7. Checktorque of blade retainingcap screw.

Recommendedtorque should be 40 ft. Ibs.

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WARNING

DONOTuse a cutting bladethat shows signs of excessive

wear or damage.Refer to the Section entitled "MOWER

BLADEREPLACEMENT"for proper bladeinspection and

service procedures.

BladeSharpening

1. Disconnectthe spark plug wire and securethe end away from the plug.

2. Tilt the mower up on its rearwheels. Donot tilt the mower with the spark plug or carburetor down.

Important: Drain the fuel tank beforetipping the mower. DO NOTtip the machine with the carburetor or spark plug down. Oil from the crankcasewill saturatethe air filter andcause

the engine to be hard to start or not start at all. If contamination doesoccur, the air filter will haveto be

replaced.

Do not sharpen beyondoriginal cutting edge

Endview of bladeassembly

Figure 17: Sharpeningthe mower blade

WARNING

DONOTattempt any maintenance,adjustments or service

with engine and blade running. STOPengineand blade.

Disconnectspark plug wire and secure awayfrom spark plug. Engineand components are HOT.Avoid serious burns, allow sufficient time for all components to cool.

WheelDriveControlAdjustment

Thewheel drive control lever(A, Figure18) should engage the transmission whenthe lever is squeezedback toward the handlebar,and should disengagethe transmission when the

lever is released.

3. Fully engagethe lever,and measurethe length of the extendedspring. The overall spring length should increase by 0.020 - 0.025".

4. Toadjust spring extension: a. Disengagethe lever. b. Toincrease (+) the extendedspring length, loosen

the jam nut (B, Figure20) and rotatethe ferrule (C) below the adjustment turnbuckle (A), located on the

lower end of the wheel drive control cable, one-half turn out from the turnbuckle. Tighten the jam nut.

c. To decrease(-) the extended spring length, loosen

the jam nut, and rotate the ferrule one-half turn in toward the turnbuckle. Tightenthe jam nut.

5. Engagethe leverand recheckthe extendedspring length. RepeatStep 4 as needed.

Figure 18: Wheeldrive controls (Components removed for clarity)

If the transmission does not engageor disengage, adjustment may be performed as follows:

1. Removethe rear cover from the mower. Referto the

t-.

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section entitled "Rear CoverRemoval& Installation".

2. With the wheel drive control lever in the 'DISENGAGE' position, the spring (A, Figure 19) on the end of the

wheeldrive control cable should havenotension. Measurethe overall length of the unextendedspring (B).

Figure20: Adjusting the transmission spring tension

IMPORTANT:INCORRECTADJUSTMENTCANCAUSE PREMATUREWEARAND/ORDAMAGETOTHEWHEEL DRIVECOMPONENTS.

Figure 19: Measuring the disengaged transmission spring length

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WARNING

DONOTattempt any maintenance,adjustments or service

with engine and blade running. STOPengineand blade.

Disconnectspark plug wire and secure awayfrom spark plug. Engineand components are HOT.Avoid serious burns, allow sufficient time for all components to cool.

BeltService

On self-propelled mowers, the engine belt transmits power from the engineto the transmission that powers the rear wheels.Should the belt become worn, it could cause slip- page,which would impair mower performance. Thecondi- tion of the enginebelt should be checkedafter every 25 hours of mower operation.

EngineDriveBelt Replacement

1. Empty the fuel tank.

2. Remove the blade (A, Figure21). Referto the Section entitled "BladeSharpening".

3. Removethe hardware (B) securing the two-piece belt cover beneaththe deck. Removethe cover.

4. Removethe rearcover of the mower. Referto the Section entitled "Rear CoverRemoval& Installation".

5. To replacethe belt: a. Removethe hardware(B, Figure22) securingthe belt

guide (A) to the transmission assembly. Removethe belt guide.

b. Removethe belt from the transmission and engine

pulleys, noting the belt routing. c. Replacethe belt. d. Replacethe belt guide onto the transmission.

6. Replacethe covers andblade.

Note: Recommendedblade torque is 40 ft./bs.

Figure21: Removing the blade and belt cover

Figure22: Removing the belt guide

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