MTD 12A-527G030 Owner’s Manual

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Page 1

Safety • Assembly • Operation • Tips & Techniques • Maintenance • Troubleshooting • Parts Lists • Warranty

OF A O AL

22" Rotary Mower- Model Series 520

iMPORTANT

READ SAFETY RULES AND iNSTRUCTiONS CAREFULLY BEFORE OPERATION

Warning: Thisunitisequippedwithan internalcombustionengineandshouldnotbeusedon or nearanyunimprovedforest-covered,brush- coveredor grass-coveredlandunlesstheengine'sexhaustsystemisequippedwitha sparkarrestermeetingapplicablelocalor statelaws(if any). If a sparkarresterisused,it shouldbemaintainedineffectiveworkingorderby theoperator.IntheStateofCaliforniatheaboveisrequiredbylaw (Section4442oftheCaliforniaPublicResourcesCode).Otherstatesmayhavesimilarlaws.Federallawsapplyonfederallands.A sparkarrester forthemufflerisavailablethroughyournearestengineauthorizedservicedealeror contactthe servicedepartment,RO.Box361131Cleveland,

Ohio44136-0019.

FORMNO.770-10349H

PRINTEDIN U.S.A.

MTD LLC, P.O. BOX 361131 CLEVELAND, OHIO 44136-0019

11/17/2006

Page 2

This Operator's Manual is an important part of your new lawn mower, it will help you assemble,

prepare, and maintain the unit for best performance. Please read and understand what it says.

Table of Contents

Slope Gauge ........................................................ 3

Safe Operation Practices ................................... 4

Setup and Adjustment ....................................... 6

Operating Your Lawn Mower .............................. 8

MTDLLCreservestherighttochangeproductspecifications,designs,andequipmentwithoutnoticeandwithoutincurringobligation.

Finding and Recording Model Number

BEFOREASSEMBLINGYOUR NEWEQUIPMENT, pleaselocatethe modelplateonthe equipmentand

copythe informationto thesamplemodel platepro- videdto the right.Youcan locatethe modelplateby standingat theoperatingpositionand lookingdown

atthe rearofthe deck.Thisinformationwillbe neces- saryto usethe manufacturer'sweb site, to obtain

assistancefromthe CustomerSupportDepartment, orwhen contactinganauthorizedservicedealer.

Maintaining Your Lawn Mower ......................... 10

Troubleshooting ................................................ 12

Off-Season Storage and Safety Labels .......... 13

Parts List ........................................................... 14

Model Number

www.mtdproducts.com

Serial Number

MTD LLC

PoO= BOX 361131

CLEVELAND, OH 44136 330-220-4683

800-800-7310

Customer Support

Please do NOT return the unit to the retailer from which it was purchased, without first

contacting Customer Support.

Ifyou have difficulty assemblingthis product or have any questions regardingthe controls, operation,or maintenanceof this unit,youcanseek helpfromthe experts.Choosefrom the options below:

• Visit www.mtdproducts.com

• Call a CustomerSupport Representativeat 1-800-800-7310.

• The engine manufacturer is responsiblefor all engine-relatedissueswith regardsto performance,power-rating,specifica- tions,warranty and service. Pleasereferto the engine manufacturer'sOwner's/Operator'sManual,packedseparatelywith

your unit, for moreinformation.

Page 3

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Page 4

WARNING: EngineExhaust,some of its constituents,and certain vehicle compo- nentscontain or emit chemicals known to Stateof Californiato cause cancer and

birth defects or other reproductiveharm.

DANGER: This machinewas builtto be operatedaccordingto the rulesfor safe operation inthis manual.As with anytypeof powerequipment,carelessnessor erroron the part of the operator

can resultin serious injury.Thismachine is capableof amputatinghandsand feet and throwing objects. Failureto observethe following safety instructionscouldresult in seriousinjury ordeath.

WARNING

Thissymbolpoints out importantsafety

instructionswhich,if notfollowed,could

endangerthe personal

i safetyand/or property I ofyourselfandothers.

Readandfollowall instructionsinthis

manualbeforeat-

temptingto operate

i this machine.Failure I to complywith these

instructionsmayresult

i inpersonalinjury.When

youseethis symbol.

i HEED ITS WARNING!

i Your Responsibility

Restrictthe use ofthis powermachine

to personswho read.

i understand

andfollow the warnings and instructions

=nthis manual and on the machine.

Children

Tragicaccidentscanoccurifoperatorisnotalertto presence ofchildren.Childrenareoftenattractedtomowerandmowing activity.Theydonot understandthe dangers.Neverassume thatchildrenwill remainwhereyoulastsawthem.

1. Keepchildrenoutof the mowingareaandunderwatchful careof a responsibleadultotherthanthe operator.

2. Bealert andturn moweroff if a childentersthearea.

3. Beforeandwhilemovingbackwards,lookbehindanddown forsmallchildren.

4. Useextremecarewhenapproachingblindcorners, doorways,shrubs,trees,or otherobjectsthatmayobscure yourvisionofachild whomayrunintothe mower.

5. Keepchildrenawayfromhotorrunningengines.Theycan sufferburnsfroma hotmuffler.

6. Neverallowchildrenunder14yearsoldto operateapower mower.Children14yearsoldandovershouldreadand understandoperationinstructionsandsafetyrulesinthis manualandshouldbetrainedandsupervisedbya parent.

General Operation

1. Readthis operator'smanualcarefullyin its entiretybefore attemptingtoassemblethismachine.Read,understand,

andfollowall instructionsonthemachineandin the manual(s)beforeoperation.Becompletelyfamiliarwith

thecontrolsandthe properuseofthis machinebefore operatingit.Keepthis manualin asafeplaceforfuture andregularreferenceandfor orderingreplacementparts.

2. Thismachineisaprecisionpieceof powerequipment, nota plaything.Therefore,exerciseextremecautionat all times.Yourunithas beendesignedto performonejob: to mowgrass.Do notuseitfor anyotherpurpose.

3. Neverallow childrenunder 14yearsoldto operatethis machine.Children14yearsoldand overshould readand

understandthe instructionsinthismanualandshould betrainedand supervisedbya parent.Onlyresponsible

individualswhoarefamiliarwiththeserulesofsafe operationshouldbeallowedto usethis machine.

4. Thoroughlyinspectthe areawherethe equipmentisto beused.Removeallstones,sticks,wire,bones,toys andotherforeignobjects,whichcouldbetrippedoveror pickedupandthrownbytheblade.Thrownobjectscan causeseriouspersonalinjury.Planyour mowingpattern toavoiddischargeofmaterialtowardroads,sidewalks, bystandersandthe like.Also,avoiddischargingmaterial againsta wall or obstruction,whichmaycausedischarged materialto ricochetbacktowardthe operator.

5. Tohelpavoidbladecontactorathrownobjectinjury, stayinoperatorzone behindhandlesand keepchildren, bystanders,helpersandpetsatleast75feetfrom mower whileitis inoperation.Stopmachineifanyoneenters

area.

6. Alwayswearsafetyglassesor safetygogglesduringopera- tionandwhile performinganadjustmentor repairto protect youreyes.Thrownobjectswhichricochetcancauseserious injurytothe eyes.

7. Wearsturdy,rough-soledworkshoesand close-fitting slacksandshirts. Shirtsand pantsthatcoverthe armsand legsandsteel-toedshoesarerecommended.Neveroperate thismachinein barefeet,sandals,slipperyorlight-weight (e.g.canvas)shoes.

8. Do notputhandsorfeet nearrotatingpartsor undercutting deck.Contactwithbladecanamputatehandsandfeet.

9. A missingor damageddischargecovercancauseblade contactor thrownobject injuries.

10.Manyinjuriesoccuras a resultofthemowerbeing pulled overthefoot duringa fall causedbyslippingor tripping. Do notholdontothe mowerifyouarefalling;releasethe handleimmediately.

11.Neverpullthe mowerbacktowardyouwhileyouare walking.Ifyoumust backthe mowerawayfroma wallor obstructionfirstlookdownandbehindtoavoidtrippingand thenfollowthesesteps:

a. Stepbackfrommowertofullyextendyourarms. b. Besure youarewellbalancedwithsurefooting.

c. Pullthe mowerbackslowly,no morethan half way

towardyou.

d. Repeatthesestepsas needed.

12.Donotoperatethe mowerwhileunderthe influenceof alcoholordrugs.

13.Donotengagetheself-propelledmechanismon unitsso equippedwhilestartingengine.

14.Thebladecontrolhandleisasafetydevice.Neverattempt tobypassitsoperation.Doingso makesthe safetydevice inoperativeandmayresult in personalinjurythrough contactwiththe rotatingblade.Thebladecontrolhandle mustoperateeasily in bothdirectionsandautomatically returntothe disengagedpositionwhenreleased.

15.Neveroperatethe mowerinwetgrass.Alwaysbesureof yourfooting. A slipandfall cancauseseriouspersonal injury.If youfeelyouarelosingyourfooting,releasethe bladecontrolhandleimmediatelyand the bladewillstop

rotatingwithinthreeseconds.

16.Mowonlyin daylightor goodartificiallight.Walk,neverrun.

17.Stopthe bladewhencrossinggraveldrives,walksor roads.

18.Ifthe equipmentshouldstartto vibrateabnormally,stopthe engineandcheckimmediatelyforthe cause.Vibrationis generallya warningoftrouble.

Page 5

19.Shutthe engineoffand waituntilthe bladecomestoa completestopbeforeremovingthegrasscatcherorunclog- gingthechute. Thecuttingbladecontinuesto rotateforafewsecondsafter the engineisshutoff.Neverplaceany partofthe body in the bladeareauntilyouare surethe bladehasstopped rotating.

20.Neveroperatemowerwithoutpropertrailshield,discharge cover,grasscatcher,bladecontrolhandleorothersafety protectivedevicesin placeandworking.Neveroperate mowerwith damagedsafetydevices.Failureto doso can resultin personalinjury.

21.Mufflerand enginebecomehotandcancausea burn.Do nottouch.

22.Onlyusepartsandaccessoriesmadeforthis machineby manufacturer.Failuretodoso can resultin personalinjury.

23. Ifsituationsoccur whichare notcoveredinthis manual, usecareand goodjudgment.Contactyour dealerfor

assistance.

Slope Operation

Slopesare amajorfactorrelatedtoslip andfallaccidents,which canresultinsevereinjury.Operationonslopesrequiresextra caution.Ifyoufeeluneasyona slope,do notmowit.Foryour

safety,usetheslopegaugeincludedaspartof this manualto measureslopesbeforeoperatingthisuniton a slopedorhilly area.Ifthe slopeisgreaterthan15degrees,donotmowit.

Do:

1. Mowacrossthefaceof slopes;neverupand down.Exercise extremecautionwhenchangingdirectiononslopes.

2. Watchfor holes,ruts,rocks,hiddenobjects,or bumps whichcancauseyouto slipor trip. Tallgrasscan hide

obstacles.

3. Alwaysbesureofyourfooting.A slipandfallcan cause seriouspersonalinjury.Ifyoufeel youare losingyour balance,releasethebladecontrolhandleimmediately,and the bladewill stoprotatingwithin3seconds.

Do Not:

1. Do notmowneardrop-offs,ditchesorembankments,you could loseyourfootingor balance.

2. Do notmowslopesgreaterthan 15degreesasshownon the slopegauge.

3. Do notmowonwetgrass.Unstablefootingcouldcause slipping.

Service

Safe Handling Of Gasoline:

1. Toavoidpersonalinjuryor propertydamageuseextreme carein handlinggasoline.Gasolineisextremelyflammable andthevaporsareexplosive.Seriouspersonalinjury can occurwhengasolineisspilledonyourselfor your clothes, whichcanignite.Washyourskinandchangeclothes immediately.

2. Use onlyan approvedgasolinecontainer.

3. Neverfillcontainersinsidea vehicleor on a truck ortrailer bedwitha plasticliner.Alwaysplacecontainersonthe

groundawayfromyourvehicle beforefilling.

4. Removegas-poweredequipmentfromthe truckor trailer andrefueliton theground.Ifthis isnot possible,thenrefuel suchequipmenton atrailer withaportablecontainer,rather thanfroma gasolinedispensernozzle.

5. Keepthe nozzlein contactwiththe rimof the fueltankor containeropeningat all timesuntilfuelingiscomplete.Do not useanozzlelock-opendevice.

6. Extinguishallcigarettes,cigars, pipesandothersources ofignition.

7. Neverfuel machineindoorbecauseflammablevaporswill accumulatein thearea.

8. Neverremovegascap oraddfuelwhileengineishot or running. Allowengineto coolatleasttwo minutesbefore refueling.

9. Neveroverfill fuel tank. Filltankto nomorethanY2inch belowbottomoffiller neckto providefor fuelexpansion.

10.Replacegasolinecap andtightensecurely.

11.Ifgasolineis spilled,wipeitoff theengineandequipment. Moveunitto anotherarea.Wait5minutesbeforestarting engine.

12.Neverstorethe machineorfuel containernearanopen flame,sparkor pilot lightasona waterheater,space heater,furnace,clothesdryeror othergasappliances.

13.Toreducefire hazard,keepmowerfreeof grass,leaves, orotherdebrisbuild-up.Cleanupoil orfuelspillageand removeanyfuel soakeddebris.

14.Allowa mowertocool at least5 minutesbeforestoring.

GeneralService:

1. Neverrunanengineindoorsorina poorlyventilatedarea. Engineexhaustcontainscarbonmonoxide,anodorless anddeadlygas.

2. Beforecleaning,repairing,orinspecting,makecertainthe bladeandall movingpartshavestopped.Disconnectthe sparkplugwireandgroundagainstthe engineto prevent unintendedstarting.

3. Checkthebladeandenginemountingboltsatfrequent intervalsfor propertightness.Also,visuallyinspectblade

fordamage(e.g.,bent,cracked,worn)Replacebladewith theoriginalequipmentmanufacture's(O.E.M.)bladeonly,

listedin thismanual."Useof partswhichdo notmeetthe originalequipmentspecificationsmayleadto improper

performanceand compromisesafety!"

4. Mowerbladesaresharpandcancut.Wrapthebladeor weargloves,anduseextracautionwhenservicingthem.

5. Keepallnuts,bolts,andscrewstightto besurethe equip- mentis insafeworkingcondition.

6. Nevertamperwithsafetydevices.Checktheirproper operationregularly.

7. Afterstrikingaforeignobject,stopthe engine,discon- nectthesparkplugwireandgroundagainsttheengine.

Thoroughlyinspectthemowerforanydamage.Repairthe damagebeforestartingandoperatingthemower.

8. Neverattemptto makeawheelor cuttingheightadjust- mentwhilethe engineisrunning.

9. Grasscatchercomponents,dischargecover,andtrail shieldaresubjecttowear anddamagewhichcould exposemovingpartsor allowobjectstobethrown.For safetyprotection,frequentlycheckcomponentsandre- placeimmediatelywithoriginalequipmentmanufacturer's (O.E.M.)partsonly,listedin thismanual."Useofparts whichdo notmeetthe originalequipmentspecifications mayleadto improperperformanceandcompromise safety!"

10.Donotchangetheenginegovernorsettingor over-revthe engine.Thegovernorcontrolsthe maximumsafeoperating

speedoftheengine.

11.Maintainorreplacesafetylabels,asnecessary.

12.Observeproperdisposallawsand regulations.Improper disposaloffluidsand materialscanharmtheenvironment.

Practices

WARNING

Thissymbol points out importantsafety instructions,which if notfollowed,could

endangerthe personal safety and/or property

of yourselfand others.

Readand followall

instructions inthis man- ual before attemptingto

operatethis machine.

Failureto comply with

these instructionsmay result in personalinjury. Whenyousee this

symbol.

HEED iT'S WARNING!

Your Responsibility

Restrictthe use

of this powermachine to personswho read.

understand and followthe warnings and instructions

in this manua and on the machine.

Page 6

Forshippingpurposes,thechutedeflectoron your mowerisheldin anuprightpositionbya retainer.

Removetheretaineras follows: a. Push chutedeflectoruptowardsengine.Holding

deflectorinthisposition,removethe retainerand discard.SeeFigure3-1.

b. Lowerthechutedeflectorcarefullykeepingyour

fingersoutoftheway.

WARNING

Thechute retainer

must be removedand

discardedbefore

operatingthe mowerl

NOTE: Yourmower

isshipped with the

handlein the heightpositionl

Figure 3-1

Figure 3=2

,_ WARNING: The chute retainer

must be removed and discarded before operating the mower.

Performthefollowingsequenceforhandlesetup: a. LifttheupperhandleupfromfoldedpositionAand

pullittoextendedpositionBfollowingthearrow in Figure3-2.Thehandleshouldclickintothis

position.

b. Makesurethecarriageboltis seatedproperlyin

thehandle.Tightenstarknobssecuringupper handletothelowerhandle

If satisfiedwith heightof handle,tightenstarknobsat theendsofthelowerhandleshowninFigure3-3.For convenienceof operating,youmayadjustthe handle

heightby removingthestarknobsandremovingthe lowerhandle.

a. Positioneachhandlebracketstudintothetophole

in thelowerhandle.SeeFigure3-3inset.

b. Tightenthe starknobs.

Insertpostoncabletiesinto holesprovidedonthe lowerhandle.Pullcabletietightandtrimexcess.See Figure3-4.

the lower handlemust

_eplaced inthe same

relativepositionl

NOTE:ThisOperator!s Manual coversseveral modelsl LawnMower

featuresvary by model:Not all features

disCuSsed(orengines pictured)in this manual are applicableto all

LawnMowermodelsl

Figure 3=3

Figure 3=4

Page 7

5. RopeguideSetupasfollowsin Figure3-5: a. Holdthebladecontrolagainsttheupperhandle.

b. Slowlypullstarterropeoutofengine. c. Slipstarterropeintotheropeguide.

d. Tightenropeguidewingnut.

6. If notalreadyontheunit,installrearwheelsasfollows in Figure3-6:

a. Placerearofthemowerdeckon raisedblocks. b. Removelocknutfrompivotarmassembly(on

selectmodels,thesemaybeincludedseparately ina plasticbag).

c. Slidewheel,withhollowsidein,ontopivotarm

andsecurewithlocknut.

d. Assembletheothersidein thesamemanner.

7. Eachwheelhasaheightadjustmentlevertochange thecutting heightofthe mower.

a. Depressheightadjustmentlevertowardswheel. b. Slidelevertodesiredpositionfora changein

cuttingheight.SeeFigure3-7.

c. Releaselevertowardsdeck.

8. Installmulchingbaffleonthe rightsideofthe mower followingthestepsbelow:

a. Lift upandholdtheside-dischargechutedeflector

andinsertbottomlip ofthe mulchingbaffleinside thechuteopening.SeeFigure3-8.

b. Snaphooksofthemulchingbaffleoverthe hinge

pinofthechutedeflector.Thehooksmustsnap intoplaceonthehingepin,lockingthe mulching

bafflefirmlyontomower.Releasechutedeflector.

Figure 3=5

Figure 3=6

i ii iiii

i CUTTINGHEIGHT

Allwheels must be

placedin the same

i relativeposition. For

roughor unevenlawns, i movethe height adjust- i mentleverto a higher i positon This will stop i scalping of grass.

MULCHINGBAFFLE

Forproperassembly,

installbottom lipinside

chute opening before

placinghooks overthe

hingepin.

IMPORTANT

Thisunit isshipped

without gasolineor

oil inthe engine.Fill

up gasolineand oil

as instructed inthe

accompanyingengine

manual BEFORE

operatingyour mower.

Figure 3=8

_., =J

Figure 3W

Page 8

WARNING

The blade control

mechanismisa

safety device. Never

attemptto bypassits

operations.

; Use extreme care

when handling

gasoline.Gasoline is

extremely flammable

and the vapors are

explosive. Never fuel the machine indoors

or whilethe engine

is hot or running.

I Extinguish cigarettes,

cigars, pipes and

other sources of

ignition.

Keep hands and feet

away from the chute

area on cutting deck.

Referto warning

label onthe unit.

Know Your Lawn Mower

BladeControl

RecoilStarter

Mulching Baffle

Figure 4-1

Nowthatyouhavesetupyour lawnmowerforopera- tion,getaquaintedwithitscontrolsandfeatures.These aredescribedbelowandillustratedonthispage.This knowledgewillallowyoutouse yournewequipmentto itsfullestpotential.

Blade Control

Thebladecontrolisattachedtothe upperhandleof themower.Depressand squeezeitagainsttheupper handletooperatetheunit. Releaseitto stopengineand

blade.

_ WARNING:Thisblade control mecha-

Drive Control

Thedrivecontrolislocatedontheundersideofthe upperhandleand isusedtoengagethedrive.Squeeze

itagainstthe upperhandleto engagethedrive;release itto slowdownor stopmowerfrompropelling.See

Figure4-1.

Mulching Baffle

insteadofcollectingthegrassclippingsinthe grass catcher,yourmowerhas theoptionof recirculatingthe clippingsbacktothelawn.Removegrasscatcher(if applicable),andoperatewiththemulchingbaffleonly forthispurpose.

nism isa safetydevice. Neverattempt to bypass itsoperations.

DriveControl

4eightAdjustment

Levers

Cutting Height Adjustment Levers

Oneadjustmentleverislocatedoneachwheelandis usedto adjustthecuttingheight.Allfourlevershaveto beatthesamerelativepositiontoensurea uniformcut.

Recoil Starter

Therecoilstarterisattachedtothe rightupperhandle. Standbehindthe unitand pullthe recoilstarterropeto

startthe unit.

Gas and Oil Fill-Up

1. Checkoillevelandaddoil if necessary.Followengine manualforthis.

2. Servicethe enginewithgasolineasinstructedinthe enginemanual. SeeEnginemanualforlocationofoil andgasfill.

_ ARNING:Useextremecarewhenhan-

dling gasoline.Gasolineis extremely flammableand the vapors areexplosive.

Neverfuel the machine indoorsor while the engine is hot or running. Extinguish

cigarettes, cigars, pipesandother sources of ignition.

Page 9

WARNING:The operationof any lawn mowercan result inforeign objects being thrownintothe eyes,whichcan

damageyoureyesseverely.Always

wearsafetyglasseswhileoperating

the mower,or whileperforming any adjustmentsor repairson it.

Starting Engine

WARNING:Besureno one otherthan

theoperatorisstandingnearthe lawn mowerwhilestartingengine or operat- ingmower. Neverrun engine indoors or in enclosed, poorly ventilated areas. Engine exhaustcontains carbon monox-

ide,an odorless and deadly gas. Keep hands,feet,hair andloose clothing

awayfromany moving partson engine and lawnmower.

1. Pushprimer(ifequipped)threetimes.Waitabout two secondsbetweeneach push.SeeFigure4-2. In temperaturearound550F or below,primefivetimes.

Donot primeto restarta warmengine.

2. Standingbehindthe mower,squeezethebladecontrol againstupperhandle.

3. Holdingthesetwo handlestogetherfirmly,grasp recoil starterhandleand pullropeoutwitha rapid,continu- ous,fullarmstroke.SeeFigure4-2.Keepinga firm griponthestarterhandle,letthe roperewindslowly.

Repeatuntilenginecranks.Letthe roperewindeach

timeslowly.

Stopping Engine

1. Releasebladecontrolto stoptheengineand blade.

2. Disconnectsparkplugwirefromsparkplugand groundagainsttheengine.

,_l_k WARNING:Waitfor the blade to stop

completelybeforedoing any work on the mower or to removethegrass

catcher.

Figure 4=2

Using Your Lawn Mower

Besurelawnisclearof stones,sticks,wire,orother objectswhichcoulddamagelawnmowerorengine. Suchobjectscouldbeaccidentlythrownbythe mower inanydirectionandcauseseriouspersonalinjurytothe operatorandothers.

WARNING:If you strikeaforeign object,stopthe engine.Remove wire from the spark plug,thoroughly

inspectmowerfor anydamage,and repairdamagebeforerestarting and

operating. Extensive vibration of mower during operation is an indica- tion of damage.The unit should be promptlyinspectedand repaired.

1. Oncetheengineis running,squeezethedrive controlagainsttheupperhandleto propelmower.

2. Forbest results,do notcut wetgrass.

3. Fora healthierlawn,nevercut offmorethanone- thirdof thetotallengthofthegrass.

Using as Mulcher

Formulchinggrass,removethegrasscatcher(if apllicable)andinstallmulchingbafflefollowinginstruc- tionsin"SettingUpYourLawnmower".

1. Foreffectivemulching,do notcut wetgrass.

2. Newor thick grassmayrequirea narrowercut. Adjustgroundspeedaccordingtoconditionoflawn.

3. If thegrasshasbeenallowedto growinexcessof 4 inches,mulchingisnotrecommended.Usethe grasscatcherto bagclippingsinstead.

perating

The operation of any

lawnmower can result

inforeign objects

being thrown into

the eyes, which can

damage your eyes

severely. Always wear

safety glasseswhile

operatingthe mower,

or while performing

any adjustments or

repairs on it.

Be sure no one other

than the operator is

standing near the lawn

mower while starting

engine or operating

mower. Never run

engine indoors or

in enclosed,poorly

ventilated areas. En-

gine exhaust contains

carbon monoxide, an

odorless and deadly

]as. Keep hands, feet, lair and loose clothing

_wayfrom any moving

partson engine and

lawn mower.

Page 10

Mower

-, Lubrication

Figure 5=1

General Recommendations

1. Alwaysobservesafetyruleswhen performing anymaintenance.

2. Thewarrantyonthislawnmowerdoesnotcover itemsthathavebeensubjectedtooperatorabuse ornegligence.Toreceivefullvaluefromwarranty, operatormustmaintainthelawn moweras

instructedhere.

3. Changingofengine-governedspeedwill void enginewarranty.

4. Alladjustmentsshouldbecheckedat leastonce eachseason.

5. Periodicallycheckallfastenersand makesurethese aretight.

1. Lubricatepivotpointson thebladecontrolanddrive controlatleastonceaseasonwithlightoil.These controlsmustoperatefreelyin bothdirections.See Figure5-1.

2. Lubricatethewheelsatleastonceaseasonwith lightoil (ormotoroil). If wheelsareremovedforany

reason,lubricatesurfaceof thepivotarmandinner surfaceof thewheelwithlightoil.SeeFigure5-1.

3. Lubricatethetorsionspringandpivotpointoneach endoftheside mulchingplug/chutedeflectorperiodi- callywithlightoil topreventrust.SeeFigure5-1.

4. Thetransmissionis pre-lubricatedand sealedatthe factoryanddoesnotrequirelubrication.

5. Followtheaccompanyingenginemanualforlubrica- tionscheduleandinstructionforenginelubrication.

Deck Care

1. Disconnectsparkplugwire.Draingasolinefromlawn mower,or placeapieceof plasticunderthegascap.

2. Tip mowersothat itrestsonthe housing.Keepthe sidewiththeaircleanerfacingup.Holdmowerfirmly.

,,_I_II_IL WARNING:Nevertip the mowermore

3. Scrapeandcleantheundersideofthedeckwitha suitabletool.Donotspraywithwater.

4. Putthemowerbackonitswheelsonthe ground.If youhad putplasticunderthegascapearlier,make

sureto removeitnow.

than 90 degrees in anydirections and do not leavethe mower tipped for any lengthoftime. Oil candrain intothe upper part of the engine causinga starting problem.

Wedo notrecommend

the useof preSsure

washersor garden

hose to Ccan

uniL These maycause damageto electric

components spindles

theengine, The use

of WaterWillresultin

shortenedlifeand

,reduce serViceabilityl

_ ARNING:Alwaysstopengine,

disconnect sparkplug, and ground against enginebeforecleaning, lubricating ordoing any kind of maintenanceonyourmachine.

Engine Care

1. Maintainoillevelasinstructedin enginemanual.

2. Serviceaircleanerevery25hoursundernormal conditions.Cleaneveryfewhoursunderextremely dustyconditions.Refertoenginemanual.

3. Cleansparkplugandresetthegaponcea season. Checkenginemanualforcorrectplugtypeandgap specifications.

4. Cleanengineregularlywitha clothorbrush.Keepthe coolingsystem(blowerhousingarea)cleantopermit properaircirculation.Removeall grass,dirtand

combustibledebrisfrommufflerarea.

Page 11

Blade Care /,I _'_

__k ARNING:Whenremovingcutting

1. Disconnectsparkplugwirefromsparkplug.Turn moweron itssidemakingsurethatthe airfilterand thecarburetorareup.

2. Removebolt,bellwasher,blade,andbladeadapter fromtheenginecrankshaft.SeeFigure5-2.

3. The bladecanbe sharpenedwithafileor on a grind- ing wheel.Donotattempttosharpenthebladewhile it is stillonthemower.Whensharpeningblade,follow originalangleofgrind.Grindcuttingedgesequallyto keepbladebalanced.

4. Removebladefromtheadapterfortestingbalance.

Balancethebladeona roundshaftscrewdriverto

check.Removemetalfromtheheavysideuntilit balancesevenly.

__i WARNING:Anunbalanced bladewill

5. Lubricatetheenginecrankshaftandthe innersurface ofthebladeadapterwithlightoil. Slidetheblade adapterontotheenginecrankshaft.Placetheblade on theadaptersuchthatthesideoftheblademarked "Bottom"(orwithpartnumber)facesthegroundwhen themowerisintheoperatingposition.Makesurethat bladeisalignedandseatedon bladeadapterflanges.

6. Placebellwasheronthe blade.Replacehexboltand tightenhexbolttotorque:450in.Ibs.rain.,600in.Ibs.

max.

Toensuresafeoperationofyourmower,periodically checkthe bladeboltforcorrecttorque.

bladefor sharpeningor replacement, protectyourhandswitha pairof heavy gloves or usea heavy ragto hold blade.

causeexcessivevibration whenrotating

athigh speeds, itmay causedamage to mower,andcould break causing

personalinjury.

Belt Care

1. Removethefrontdrive coverbyslidingoffthe two plasticrivetson eachside ofthecoverwitha screwdriver.SeeFigure5-3.

2. Disconnectbelttensionspringfromtransmission.See Figure5-3.

3. Pushtransmissionup a littleandslidebeltoffthe

transmissionpulley.Lift mowertoaccessbeltfrom undersideofmower.Slidebeltoffof enginepulleyand aroundtheblade.SeeFigure5-4.

4. Replacewithnewbelt,workingaroundblade.Make

surebeltisfirmlyseatedonenginepulleywhile pullingfromtheothersideandslidingitaroundthe transmissionpulley.Securebelttensionspringtothe

transmission.Reassemblefrontdrivecover.

k,.. j

Figure 5=2

Figure 5=3

Figure 5-4

Maintaining

WARNING

When removing

the cutting blade

for sharpening or

replacementor

when sliding the belt

around it, protect

your hands with a

pairof heavy gloves

or use a heavy rag to

hold the blade.

An unbalanced blade

will causeexcessive vibrationwhen rotat- ing at high speeds. It

may cause damage

to mower, and could

break causing per-

sonal injury.

Page 12

Problem Cause Remedy

Ena ne fa sto start 1. Bladecontroldisengaged, i. Engagebladecontro!.

sParkPiugwiie disconnected: conneO!wiretOsparkplugl

3. Fueltankemptyorstalefuel. & Filltankwithclean,freshgasolinel

4. Enginenotpiimed(if equippedwth 4. primeengineaSinstr,u,ctedin Operat, primer)i ing YourLawnMower.

Faultysparkp ugl c ean adjustgap or repiacel

61 BloCked fuel linel clean fuellinel

7: Engineflooded. 7. Wait a few minutesto restait,but do

I notprimel

" 8. Fue!valve(ifequipped)closed, & Openfuelva!ve: See enginemanuaI.

........... 91 Enginenotchoked(ifequippedw/choke). 9. Chokeengine:Seeenginemanual.

For repairsbeyond

minor adjustments

listed here, contact

an authorized service

dealer.

Engineruns erratic

1. Sparkplugwireloose.

2. Blockedfuel lineor stalefuel.

3. Ventingascap plugged.

4. Wateror dirt infuel system.

5. Dirtyair cleaner.

6. Carburetorout ofadjustment.

1. Connectandtightensparkplugwire.

2. Cleanfuelline;fill tank withclean, freshgasoline.

3. Clearvent.

4. Drainfueltank. Refillwithfreshfuel.

5. Referto enginemanual.

6. Referto enginemanual.

Engne overheats 1. Engineoil levellow. 1. Fillcrankcasewithproperoil.

2. Air flow restricted. 2. Removeblowerhousing andc ean.

3. Carburetornotadjustedproperly. 3. Referto enginemanual.

Occasionalskips 1. Sparkpluggap tooclose. 1. Adjustgap to .030".

(hesitates)at 2. Carburetoridlemixtureadjustment 2. Referto enginemanual.

highspeed improperlyset.

Idlespoorly 1. Sparkplugfouled,faultyorgap 1. Resetgapto .030"or replace

- - too wide. _ sparkplug. I 2. Carburetorimproperlyadjusted. 2. Referto enginemanual.

3 Dirtyair cleaner. 3. Referto enginemanual.

Excessive 1. Cuttingbladelooseor unbalanced. 1. Tightenbladeandadapter.Balance

Vibration blade.

2. Bentcuttingblade. 2. See anauthorizedservicedealer.

Mowerwillnot 1. Wetgrass. 1. Donot mowwhengrassLswet; walt

mulch clrass/If I I untillatertocut.

._ ,_" I 2 Excessve y h ghgrass 2. Mowonce ata highcuttingheight

_-qulppea_ then mowagainatdesiredheight'or

I makea narrowercuttingpath.

I 3. Dullblade. I 3. Sharpenor replaceblade.

Unevencut 1. Wheelsnotpositionedcorrectly. 1. Placeallfour wheelsinsame

heightposition.

2. Dullblade. 2. Sharpenor replaceblade.

Mowerwill not

seIfpropeI ' , andmovement.

1. Beltnotinsialledproperly. 1. Check beltforproperpulleyinstallation

2. Debrscloggngdriveoperation 2. Stop engine,disconnectsparkplug wireand cleanoutdebris.

3. Damagedorwornbelt. 3. Inspectandreplacebelt.

Page 13

Off=Season Storage 4. Coatmower'scuttingbladewithchassisgreaseto Thefollowingstepsshouldbetakentoprepareyourlawn mowerforstorage.

1. Cleanandlubricatemowerthoroughlyasdescribedin thelubricationinstructions.

2. We donotrecommendtheuseofa pressurewasher or gardenhoseto cleanyour unit.

3. Referto enginemanualforcorrectengine storageinstructions.

preventrusting.

5. Storemowerinadry,cleanarea.Donotstorenext tocorrosivematerials,suchas fertilizer.

Whenstoringanytypeof powerequipmentina poorly ventilatedor metalstorageshed,careshouldbetaken torust-prooftheequipment.Usingalightoil or silicone, coattheequipment,especiallycablesandall moving partsofyourlawnmowerbeforestorage.

Safety Labels Found On Your Lawn Mower

S".............

WARNING

DO NOTremove safety

(or any) labels from mower for any reason.

Page 14

Model Series 520

_4_

WheelTreads

ZagTread BarTread

Page 15

Ref. PartNo. Description

No.

1. 747-1214 DriveControl

2. 747-1161A BladeControl

3. 746-1132 BladeControlCable- 40.75" 746-04389 BladeControlCable- 42.0"

4. 746-04204 DriveControlCable

5. 749-1092A UpperHandle

6. 710-1205 EyeBolt

7. 720-0279 WingNut,1/4-20

8. 687-02141 FrontLeverAssembly- RH 687-02140 FrontLeverAssembly-LH

9. 736-0182t SprgWasher,.500x 1.00x .022

10. 710-1174 CarriageBolt5/16-18x2.0

11. 731-04859t BailCover- Gray 731-2626t BailCover-Black

12. 720-04072 WingNut

13. 749-04037 LowerHandle

14. 725-0157 CableTie

15. 17098 HingeClip

16. 731-2537 TrailShield

17. 710-0599 HexScrew,1/4-20x.500

18. 682-3062A HandleBracketAssy- RH

19. 687-02052 RearHgt.Adj.LeverAssembly

20. 712-04065 LockNut3/8-16

21. 682-3063A HandleBracketAssembly-LH

22. 687-02046 22"DeckAssembly

23. 710-0654A HexWasherScr., 3/8-16x 1.0

24. 754-04100 V-Belt,3Lx32.90

25. 782-0585A ForwardHeightAdj.Plate- LH

26. 728-0199 Rivet

27. 750-04407 SleeveSpacer,.550IDx 2.22

28. 716-0198 RetainerRing

29. 618-04375A TransmissionAssemblyComp.

Ref. Part No. Description

No.

30. 750-04406A SleeveSpacer,.550IDx7.42

31. 731-04014 TransmissionCover-Gray 731-0073 TransmissionCover-Black

32. 748-04016A BladeAdapter

33. 742-0742A 22" MulchingBlade

34. 736-0452 Washer,Bell,.396x 1.140x .095

35. 710-1044 HexCapScrew3/8-24x 1.5

36. 782-0584 ForwardHght.Adj.Plate- RH

37. 731-0981At HubCap

38. 710-0216 HexCapScrew3/8-16x.75

39. 720-0426 AdjustmentKnob

40. 748-0390 BearingSupportSpacer

41. 731-04643 WheelDustCover

42. 715-0221 Pin

43. 717-1762 SpurGear14T- RH 717-1761 SpurGear14T- LH

44. 732-04049 Ext.Spring.47ODx2.50

45. 734-2042 FrontWheel,8 x2.125,Zag

46. 747-0710 HingePin

47. 732-1014 TorsionSpring

48. 731-1034B SideDischargeAssembly

49. 736-0270 BellWasher.265IDx.75OD

50. 17032A DeflectorChuteAdapter

51. 631-04045 MulchingBaffle

52. 741-0717 ThrustBrg.688IDx 1.938OD

53. 732-0984B SpringLever

54. 687-02080 RearPivotArmAssy- RH 687-02079 Rear PivotArmAssembly- LH

55. 738-1127 ShoulderScrew3/8-16

56. 716-0865 SnapRing.500

57. 734-04093 RearWheel,12x2.125,Zag

tif Equipped

!ii(]_i_i__i_ii!__i_iii __ _i!IiI_i_ii__I

£NUIN£

_FACTORY PARTS

iiii iii i

To order replacement

parts,

1"800:800:7310

www,mtdproducts:com

iMPORTANT

Fora properworking machine,use Factory

ApprovedParts. V-BELTSare specially

designedto engage anddisengagesafely.

A substitute (non OEM) V-Beltcan be danger-

ousby not disengaging completely.

Page 16

MANUFACTURER'S LiMiTED WARRANTY FOR

ThelimitedwarrantysetforthbelowisgivenbyMTDLLCwithrespect tonewmerchandisepurchasedandusedin the UnitedStates,its possessionsandterritories. "MTD"warrantsthisproductagainstdefectsinmaterialandworkman- shipfor a periodoftwo (2)yearscommencingonthedateof original purchaseandwill,at itsoption,repairor replace,freeof charge,any partfoundto bedefectiveinmaterialsorworkmanship.Thislimitedwar- rantyshallonlyapplyifthisproducthasbeenoperatedand maintained inaccordancewiththe Operator'sManualfurnishedwiththeproduct, andhasnotbeensubjectto misuse,abuse,commercialuse,neglect, accident,impropermaintenance,alteration,vandalism,theft,fire,water, ordamagebecauseofotherperilor naturaldisaster.Damageresulting fromthe installationor useof anypart,accessoryorattachmentnot approvedby MTDforusewiththeproduct(s)coveredbythis manual willvoid yourwarrantyastoanyresultingdamage. Normalwearpartsarewarrantedto befreefromdefectsinmaterialand workmanshipfora periodofthirty(30)daysfromthedateof purchase. Normalwearpartsinclude,butarenotlimitedto itemssuchas:batter- ies,belts,blades,bladeadapters,grassbags,riderdeckwheels,seats, snowthrowerskidshoes,shaveplates,augerspiralrubberandtires. HOW TO OBTAIN SERVICE: Warrantyservice isavailable,WITH PROOFOF PURCHASE,throughyour localauthorized service dealer.Tolocatethe dealer in yourarea, check yourYellowPages,

or contact MTDLLC at RO. Box 361131,Cleveland,Ohio44136- 0019,or call 1-800-800-7310or 1-330-220-4683 or logonto our

Website at www.mtdproducts.com. Thislimitedwarrantydoesnot providecoverageinthefollowingcases: a. Theengineor componentpartsthereof.Theseitemsmaycarrya

separatemanufacturer'swarranty.Refertoapplicablemanufacturer's warrantyfortermsandconditions.

b. Logsplitterpumps,valves,andcylindershavea separateoneyear

warranty.

c. Routinemaintenanceitemssuchaslubricants,filters,blade

sharpening,tune-ups,brakeadjustments,clutchadjustments,deck adjustments,andnormaldeteriorationoftheexteriorfinishdueto

useor exposure.

d. Servicecompletedbysomeoneotherthananauthorizedservice

dealer.

e. MTDdoesnot extendanywarrantyforproductssoldor exported

outsideoftheUnitedStates,itspossessionsandterritories,except thosesoldthroughMTD'sauthorizedchannelsofexportdistribution.

f. ReplacementpartsthatarenotgenuineMTDparts. g. Transportationchargesandservicecalls.

Noimpliedwarranty,includingany impliedwarranty of mer- chantabilityof fitness for a particular purpose,appliesafter the applicable periodof expresswritten warranty aboveas to the partsasidentified.Nootherexpresswarranty,whetherwrittenor oral, except as mentioned above,givenby anypersonor entity,

includinga dealeror retailer, withrespect to any product,shall bindMTD.Duringthe periodof the warranty,the exclusiveremedy isrepairor replacementof the productas setforth above. Theprovisionsasset forth inthis warrantyprovidethesoleand exclusiveremedy arising from the sale.MTDshallnot be liable

for incidentalor consequentiallossordamageincluding,without limitation, expensesincurredfor substituteor replacementlawn careservicesor for rentalexpensesto temporarily replacea warranted product.

Somestatesdo notallowtheexclusionor limitationofincidentalor consequentialdamages,or limitationsonhowlongan impliedwarranty

lasts,sotheaboveexclusionsor limitationsmaynotapplytoyou. Innoeventshallrecoveryofany kindbegreaterthantheamountof the purchasepriceof theproductsold.Alterationof safetyfeaturesof the productshallvoid this warranty. Youassumetheriskandliability forloss,damage,orinjurytoyou andyourpropertyand/ortoothersand theirpropertyarisingoutofthe misuseorinabilitytousethe product. Thislimitedwarrantyshallnotextendtoanyoneotherthan theoriginal purchaserorto thepersonforwhomitwas purchasedasagift.

HOWSTATELAWRELATESTOTHISWARRANTY:This limited warrantygivesyouspecificlegalrights,and youmayalsohaveother

rightswhichvaryfromstatetostate. IMPORTANT:OwnermustpresentOriginalProofof Purchasetoobtain warrantycoverage.

IViTDLLC, P.O. BOX 361131 CLEVELAND, OHiO 44136-0019; Phone: 1=800=800-7310, 1-330=220-4683