Safety • Assembly • Operation • Tips & Techniques • Maintenance • Troubleshooting • Parts Lists • Warranty
OF A O A AL
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21" Self-Propelled Mower
Model Series 989
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.770-02331
PRINTEDIN U.S.A.
MTD LLC, P.O. BOX 361131 CLEVELAND, OHIO 44136-0019
01/2006
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
Maintaining Your Lawn Mower ......................... 10
Finding and Recording Model Number
BEFOREYOUSTARTASSEMBLING
YOURNEW EQUIPMENT,
please locatethe modelplate onthe equipmentand copythe
informationtothe sample modelplate providedtothe right.
Youcan locatethe model plate by standing at the operating
position and lookingdown atthe rear of the deck. This
informationwill be necessaryto usethe manufacturer'sweb
site and/or obtain assistancefrom theCustomerSupport
Departmentor an authorizedservice dealer.
Trouble Shooting .............................................. 14
Off-Season Storage and Safety Labels .......... 15
Parts List ........................................................... 16
Warranty ............................................ Back Cover
Model Number
www.yardman.com 330-220-4683
Serial Number
P. O. BOX 361131
CLEVELAND,OH44136
800-800-7310
Customer Support
Please do/VOTreturn the unit to the retailer from which it was
purchased, without first contacting Customer Support.
Ifyou havedifficulty assembling this productor haveany questionsregarding the controls, operationor maintenanceof this unit,
youcan seek helpfrom the experts. Choosefromthe optionsbelow:
1. Visit yardman.com. Click on the CustomerSupport
menuoption.
2. Phonea Customer Support Representativeat 1 (800)
800-7310.
Y_doM_ YardMac_,_es M_ua,s O_,ine P_s O_iine Sewic_ Loca_o_ ]i P_o_Juc,:Re!_str_o_ ]
3. Theengine manufactureris responsiblefor all engine-
relatedissueswith regardsto performance, power-rating,
specifications,warrantyand service. Pleasereferto the
enginemanufacturer'sOwner's/Operator's Manual,packed
separatelywithyour unit, for more information.
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WARNING: EngineExhaust,some of its constituents,andcertain vehicle compo-
nentscontain or emit chemicals knownto Stateof Californiato cause cancerand
birth defects or other reproductiveharm.
DANGER: This machinewas builtto beoperatedaccordingto the rulesfor safe operation in this
manual.As with anytypeof power equipment,carelessnessor error on the part of the operator can
result in seriousinjury.This machine iscapableof amputatinghands andfeet andthrowing objects.
Failureto observethe followingsafetyinstructionscould result in serious injury or death.
RNING
This symbol points
out important safety
instructionswhich, if
notfollowed, could
endangerthe personal
i safety and/or property
ofyourself and others.
Readand follow all
instructionsinthis man-
ualbefore attempting to
operatethis machine.
Failureto complywith
these instructionsmay
resultin personalinjury.
i When youseethis
symbol.
HEED iTS WARNING
Your
i Flesponsibility
I Restrictthe use
i of this powermachine
to personswho read.
understand
and followthe warnings
and instructions
in this manual
andon 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,toysand
otherforeignobjectswhichcouldbetrippedoverorpicked
upandthrownby the blade.Thrownobjectscancause
seriouspersonalinjury.Planyourmowingpatternto avoid
dischargeof materialtowardroads,sidewalks,bystanders
andthe like.Also,avoiddischargingmaterialagainsta
wallorobstructionwhichmaycausedischargedmaterial
toricochetbacktowardtheoperator.
5. Tohelpavoidbladecontactorathrownobjectinjury,
stayinoperatorzone behindhandlesand keepchildren,
bystanders,helpers,and petsat least75feetfrommower
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,slipperyorlightweight
(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.Donotengage theself-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.Iftheequipmentshouldstartto vibrateabnormally,stopthe
engineandcheckimmediatelyforthe cause.Vibrationis
generallya warningoftrouble.
19.Shutthe engineoff andwaituntilthebladecomesto a
completestopbeforeremovingthegrasscatcheror unclog-
gingthechute.
Thecuttingblade continuesto rotatefor a fewseconds
4
after theengineisshutoff. Neverplaceanypartofthe body
inthebladeareauntilyouaresurethe bladehasstopped
rotating.
20. Neveroperatemowerwithoutpropertrailshield,discharge
cover,grasscatcher,bladecontrolhandle,or othersafety
protectivedevicesin placeandworking.Neveroperate
mowerwithdamagedsafetydevices.Failuretodo so can
resultin personalinjury.
21. Mufflerandenginebecomehotandcan causeaburn.Do
nottouch.
22.Onlyusepartsand accessoriesmadeforthis machineby
manufacturer.Failuretodo so canresultinpersonalinjury.
23. Ifsituationsoccurwhicharenotcoveredinthis manual,
usecareand goodjudgment.Contactyourdealerfor
assistance.Telephone1-800-800-7310for the nameofyour
nearestdealer.
Slope Operation
Slopesare amajorfactorrelatedto slipandfallaccidentswhich
can resultinsevereinjury.Operationonslopesrequiresextra
caution.Ifyoufeeluneasyona slope,do notmowit.Foryour
safety,usetheslopegaugeincludedaspartof this manualto
measureslopesbeforeoperatingthis unitonaslopedor hilly
area.Iftheslopeisgreaterthan 15degrees,donot mowit.
Do:
1. Mowacrossthefaceofslopes; neverup anddown.
Exerciseextremecautionwhenchangingdirectionon
slopes.
2. Watchfor holes,ruts,rocks, hiddenobjects,or bumpswhich
can causeyouto slipor trip.Tallgrass canhideobstacles.
3. Alwaysbesureofyourfooting.A slip andfallcancause
seriouspersonalinjury.Ifyoufeelyouare losingyour
balance,releasethebladecontrolhandleimmediately,and
the bladewill stoprotatingwithin 3seconds.
Do Not:
1. Donot mowneardrop-offs,ditchesorembankments,where
you couldloseyourfootingor balance.
2. Donot mowslopesgreaterthan 15degreesasshownon
the slopegauge.
3. Donot mowon wetgrass.Unstablefootingcouldcause
slipping.
Service
Safe HandlingOf Gasoline:
1. To avoidpersonalinjury orpropertydamageuseextreme
care inhandlinggasoline.Gasolineisextremelyflammable
andthevaporsareexplosive.Seriouspersonalinjurycan
occurwhengasolineisspilledonyourselforyourclothes
whichcanignite.
2. Wash yourskin andchangeclothesimmediately.
3. Useonlyanapprovedgasolinecontainer.
4. Neverfillcontainersinsidea vehicleoron atruckor trailer
bedwitha plasticliner.Alwaysplacecontainersonthe
groundawayfromyourvehicle beforefilling.
5. Removegas-poweredequipmentfromthe truck ortrailer
andrefuelit onthe ground.Ifthis is notpossible,thenrefuel
suchequipmenton a trailerwitha portablecontainer,rather
thanfroma gasoline dispensernozzle.
6. Keepthenozzlein contactwiththe rimofthefueltankor
containeropeningat alltimesuntil fuelingis complete.Do
notuseanozzlelock-opendevice.
7. Extinguishallcigarettes,cigars,pipesandothersources
of ignition.
8. Neverfuel machineindoorsbecauseflammablevaporswill
accumulatein thearea.
9. Neverremovegascap oraddfuelwhileengineishot or
running. Allowengineto coolatleasttwo minutesbefore
refueling.
10.Neveroverfillfueltank.Filltankto nomorethanY2inch
belowbottomoffiller neckto providefor fuelexpansion.
11.Replacegasolinecap andtightensecurely.
12.Ifgasolineis spilled,wipeitoff theengineandequipment.
Moveunitto anotherarea.Wait5minutesbeforestarting
engine.
13.Neverstorethe machineorfuel containernearanopen
flame,sparkor pilot lightasona waterheater,space
heater,furnace,clothesdryer,orothergasappliances.
14.Toreducefire hazard,keepmowerfreeof grass,leaves,
orotherdebrisbuild-up.Cleanupoil orfuelspillageand
removeanyfuel soakeddebris.
15.Allowa mowertocool at least5 minutesbeforestoring.
GeneralService:
1. Neverrunanengineindoorsorina poorlyventilatedarea.
Engineexhaustcontainscarbonmonoxide,anodorlessand
deadlygas.
2. Beforecleaning,repairing,orinspecting,makecertainthe
bladeandall movingpartshavestopped.Disconnectthe
sparkplugwireandgroundagainstthe engineto prevent
unintendedstarting.
3. Checkthebladeandenginemountingboltsatfrequent
intervalsfor propertightness.Also,visuallyinspectbladefor
damage(e.g.,bent,cracked,worn)Replacebladewiththe
originalequipmentmanufacture's(O.E.M.)bladeonly,listed
inthismanual."Useof partswhichdo notmeetthe original
equipmentspecificationsmayleadto improperperformance
andcompromisesafety!"
4. Mowerbladesaresharpandcancut.Wrapthebladeor wear
gloves,anduseextracautionwhenservicingthem.
5. Keepallnuts,bolts,andscrewstightto besurethe equip-
mentis insafeworkingcondition.
6. Nevertamperwithsafetydevices.Checktheirproperopera-
tionregularly.
7. Afterstrikingaforeignobject,stopthe engine,discon-
nectthesparkplugwireandgroundagainsttheengine.
Thoroughlyinspectthemowerforanydamage.Repairthe
damagebeforestartingandoperatingthemower.
8. Neverattemptto makeawheelor cuttingheightadjustment
whiletheengineis running.
9. Grasscatchercomponents,dischargecover,andtrail
shieldaresubjecttowear anddamagewhichcouldexpose
movingpartsor allowobjectsto bethrown.Forsafety
protection,frequentlycheckcomponentsandreplaceim-
mediatelywithoriginal equipmentmanufacturer's(O.E.M.)
partsonly,listedinthis manual."Useofpartswhich do
notmeetthe originalequipmentspecificationsmayleadto
improperperformanceandcompromisesafety!"
10.Donotchangetheenginegovernorsettingor overspeedthe
engine.Thegovernorcontrolsthe maximumsafeoperating
speedoftheengine.
11.Maintainorreplacesafetylabels,asnecessary.
12.Observeproperdisposallawsand regulations.Improper
disposaloffluidsand materialscanharmtheenvironment.
WARNING
Thissymbol points
out importantsafety
instructionswhich, if
notfollowed,could
endangerthe personal
safety and/or property
ofyourself andothers.
Readand followall
instructions inthis man-
ual before attemptingto
operatethis machine.
Failureto comply with
these instructionsmay
result in personalinjury.
Whenyousee this
symbol.
HEED iTS WARNING
Your
Responsibility
Restrictthe use
ofthis powermachine
to personswho read.
understand
and followthe warnings
and instructions
inthis manual
and on the machine.
5
Standbehindthe mower
i asif youweregoingto
operateit.Yourright hand
correspondsto the right
sideofthe mower;your
lefthandcorrespondsto
the leftsideofthe mower.
Makecertainthe drive
cableisroutedaround
theoutsideandabove
the lowerhandleso it
I doesnot interferewith
attachingthe grassbag.
i The chutedoorhasbeen
designedto movethe
i starterrope outof the way
i ofthe bagwhenthe chute
doorisopened.
Figure3-1:Unfoldhandleand tightenhardware.
f
[ Hardware Pack l
Wing Nuts (2) Carriage Bolts (2)
1. Removeanypackingmaterialwhichmaybebetween
upperandlowerhandles.
a. Pullupand backon upperhandleasshownin
Figure3-1.Makecertainthelowerhandleisseated
securelyintothehandlemountingbrackets.
b. Tightenhandknobstosecureupperhandleto
lowerhandle.Makesurethateachcarriageboltis
seatedproperlyinthehandle.
NOTE:Makecertainthe drive cableis routedaround
the outside and above the lowerhandle.
2. Locatethe hairpinclipon the weldpinon eachsideof
thelowerhandle.
a.
Removehairpinclipfromthishole.Usinga pair
ofpliers,inserthairpinclipintothe holeon pin
closesttothebracket,Figure3-2.Repeatonother
side.
b. Inserta carriageboltfromthehardwarepackinto
theupperholeonthehandlemountingbracket.
Securewithone plasticwingnut,alsoincluded
inthehardwarepack.Repeatonothersidewith
remainingitemsfromhardwarepack.
.
Theropeguide,whichisconnectedto thesupport
rod,is locatedontherightsideofthelowerhandle,
Figure3-3.
a. Holdthebladecontrolagainstupperhandle.
b. Pullstarterropeoutofthe engine.Releasethe
bladecontrol.
c. Slipstarterropeinto ropeguide.
.
Securecablesto thelowerhandleusingthecableties
alreadyonthe lowerhandle.Insertpegsoncableties
intothe holeson the lowerhandle.Pullcabletiestight
andtrimexcess.
i IMPORTANT
Thisunit isshippedwith=
outgasoline or oil inthe
engine.Fillup gasoline
i and oil asinstructedin
I the accompanyingengine
i manual BEFOREoperat-
I ingyourmower.
Figure3-2:Securelowerhandletomountingbrackets.
Figure3-3:Pullrecoilstarterthroughropeguide.
J
Figure3-4:Usewing nutsto securedischargechuteto deck.
6
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