Safety • Assembly • Operation • Tips &Techniques • Maintenance • Troubleshooting • Parts Lists • Warranty
A O A AL
21" Rotary Mower- Model Series 420
iMPORTANT
READ SAFETY RULES AND iNSTRUCTiONS CAREFULLY BEFORE OPERATION
Warning: Thisunitisequippedwithaninternalcombustionengineandshouldnotbeusedon or nearanyunimprovedforest-covered,brush-
coveredor grass-coveredlandunlesstheengine'sexhaustsystemisequippedwitha sparkarrestermeetingapplicablelocalor statelaws(if any).
If a sparkarresterisused,it shouldbemaintainedineffectiveworkingorderbytheoperator.IntheStateofCaliforniatheaboveisrequiredbylaw
(Section4442oftheCaliforniaPublicResourcesCode).Otherstatesmayhavesimilarlaws.Federallawsapplyonfederallands.A sparkarrester
forthemufflerisavailablethroughyournearestengineauthorizedservicedealeror contacttheservicedepartment,RO.Box361131Cleveland,
Ohio44136-0019.
PRINTEDIN U.S.A.
MTD LLC, P.O. BOX 361131 CLEVELAND, OHIO 44136-0019
FORMNO.769-01609A
4/2005
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
Trouble Shooting .............................................. 12
Safety Labels .................................................... 13
Parts List ........................................................... 14
Finding and Recording Model Number
BEFOREYOU STARTASSEMBLING
YOURNEW EQUIPMENT,
please locatethe modelplate onthe equipmentand copythe
informationtothe sample modelplate providedtothe right.
Youcan locatethe modelplateby standing at the operating
position andlookingdown atthe rear ofthe deck. This
informationwill be necessaryto usethemanufacturer'sweb
site and/or obtain assistancefrom the CustomerSupport
Departmentoran authorizedservicedealer.
Model Number
Serial Number
YaRD-MaN)//"
P. O. BOX ;361131
CLEVELAND,OH44136
www.yardman.com 330-220-4683
800-800-731 0
Customer Support
Please do IVOTreturn the unit to the retailer from which it was
purchased, without first contacting Customer Support.
Ifyou have difficultyassemblingthis productorhave any
questions regardingthecontrols, operationor maintenanceof
this unit,youcanseek helpfromthe experts.Choosefrom the
options below:
1. Visit yardman.com for many usefulsuggestions.Click
on CustomerSupport buttonand you will get the four
options reproducedinthis sampleto the right.Click on the
appropriate buttonand helpis immediatelyavailable.
2. Phonea Customer Support Representative
at 1(800) 800-7310.
3. The engine manufacturer isresponsiblefor all engine-
relatedissueswith regardsto performance,power-rating,
specifications,warranty and service. Pleasereferto the
engine manufacturer'sOwner's/Operator's Manual,packed
separatelywithyour unit,for moreinformation.
Click here to search our knowledge base.
Search by product, keyword, or phrase.
Login to check the status of your questions, modify
your inquiries, or update your personal profile.
Need local assistance? Click here to find authorized
service centers in your area.
Need a manual and/or parts list? Download
literature from recent model years.
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I
15°
WARNING
Thissymbolpoints
out importantsafety
instructionswhich,if
notfollowed,could
endangerthe personal
i safetyand/or property
I ofyourselfand others.
Readandfollowall
instructionsinthis
manualbeforeat-
temptingto operate
i this machine.Failure
I to complywiththese
instructionsmay result
i inpersonalinjury.When
youseethis symbol.
i HEED ITS WARNING!
Your Responsibility
Restrictthe use
ofthis powermachine
to personswho read,
_understand
ano followthe warnings
and instructions
inthis manual
and on the machine.
WARNING: EngineExhaust,some of itsconstituents,andcertain vehicle compo-
nentscontain or emit chemicals knownto Stateof Californiato cause cancer and
birth defectsor other reproductiveharm.
DANGER: Thismachinewas builtto beoperatedaccordingto the rulesfor safe operationin this
manual.As with anytypeof powerequipment,carelessnessor erroronthe part ofthe operatorcan
result inseriousinjury.This machine iscapableof amputatinghands andfeet andthrowing objects.
Failureto observethe followingsafety instructionscould resultin serious injuryordeath.
Children
Tragicaccidentscanoccurifoperatorisnotalertto presence
ofchildren.Childrenareoftenattractedtomowerand mowing
activity.Theydonot understandthe dangers.Neverassume
thatchildrenwill remainwhereyoulastsawthem.
1. Keepchildrenoutofthe mowingareaandunderwatchful
careofa responsibleadultotherthanthe operator.
2. Bealertandturnmoweroffif achildentersthearea.
3. Beforeand whilemovingbackwards,lookbehindanddown
forsmallchildren.
4. Useextremecarewhenapproachingblindcorners,
doorways,shrubs,trees,orotherobjectsthatmayobscure
yourvisionofa child whomayrunintothemower.
5. Keepchildrenawayfromhotor runningengines.Theycan
sufferburnsfroma hotmuffler.
6. Neverallowchildrenunder14yearsoldto operateapower
mower.Children14yearsoldandovershouldreadand
understandoperationinstructionsandsafetyrulesinthis
manualandshouldbetrainedandsupervisedbyaparent.
General Operation
1. Readthisoperator'smanualcarefullyin its entiretybefore
attemptingtoassemblethismachine.Read,understand,
andfollowall instructionsonthe machineandin the
manual(s)beforeoperation.Becompletelyfamiliarwith
thecontrolsandthe properuseofthis machinebefore
operatingit. Keepthis manualin a safeplaceforfuture
andregularreferenceandfor orderingreplacementparts.
2. Thismachineisa precisionpieceof powerequipment,
nota plaything.Therefore,exerciseextremecautionat all
times.Yourunithas beendesignedto performonejob: to
mowgrass.Do notuseit foranyotherpurpose.
3. Neverallowchildrenunder14yearsoldto operatethis
machine.Children14yearsoldand overshouldreadand
understandthe instructionsinthismanualandshould
betrainedand supervisedby a parent.Onlyresponsible
individualswhoarefamiliarwiththeserulesofsafe
operationshouldbeallowedto usethis machine.
4. Thoroughlyinspectthe areawheretheequipmentisto
beused.Removeall stones,sticks,wire,bones,toys
andotherforeignobjects,whichcouldbetrippedoveror
pickedupandthrownbythe blade.Thrownobjectscan
causeseriouspersonalinjury.Planyourmowingpattern
toavoiddischargeofmaterialtowardroads,sidewalks,
bystandersandthe like.Also,avoiddischargingmaterial
againsta wallor obstruction,whichmaycausedischarged
materialto ricochetbacktowardthe operator.
5. Tohelpavoidbladecontactora thrownobjectinjury,
stayinoperatorzonebehindhandlesandkeepchildren,
bystanders,helpersandpetsatleast75feetfrom mower
whileit is inoperation.Stopmachineifanyoneenters
area.
6. Alwayswearsafetyglassesor safetygogglesduringopera-
tionandwhile performinganadjustmentor repairtoprotect
youreyes.Thrownobjectswhich ricochetcancauseserious
injurytothe eyes.
7. Wearsturdy,rough-soledworkshoesand close-fitting
slacksandshirts.Shirtsand pantsthatcoverthe armsand
legsandsteel-toedshoesarerecommended.Neveroperate
thismachineinbarefeet,sandals,slipperyor light-weight
(e.g.canvas)shoes.
8. Do notputhandsorfeetnearrotatingpartsor undercutting
deck.Contactwithbladecanamputatehandsandfeet.
9. A missingor damageddischargecovercancause blade
contactor thrownobjectinjuries.
10.Manyinjuriesoccurasa resultofthe mowerbeingpulled
overthefoot duringafall causedbyslippingor tripping.
Do notholdontothe mowerifyouarefalling;releasethe
handleimmediately.
11.Neverpullthe mowerbacktowardyouwhileyouare
walking.Ifyoumustbackthe mowerawayfromawallor
obstructionfirstlookdownand behindtoavoidtrippingand
thenfollowthesesteps:
a. Stepbackfrommowertofully extendyourarms.
b. Besureyouarewellbalancedwithsurefooting.
c. Pullthe mowerbackslowly,no morethanhalfway
towardyou.
d. Repeatthesestepsas needed.
12.Do notoperatethe mowerwhileunderthe influenceof
alcoholordrugs.
13.Do notengagetheself-propelledmechanismon unitsso
equippedwhilestartingengine.
14.Thebladecontrolhandleisasafetydevice.Neverattempt
tobypassitsoperation.Doingso makesthe safetydevice
inoperativeandmayresultin personalinjurythrough
contactwiththe rotatingblade.Thebladecontrolhandle
mustoperateeasilyin bothdirectionsandautomatically
returntothe disengagedpositionwhenreleased.
15.Neveroperatethe mowerinwet grass.Alwaysbesureof
yourfooting. Aslipand fall cancauseseriouspersonal
injury.If youfeelyouarelosingyourfooting,releasethe
bladecontrolhandleimmediatelyand the bladewillstop
rotatingwithinthreeseconds.
16.Mowonlyin daylightor goodartificiallight.Walk,neverrun.
17.Stopthe bladewhencrossinggraveldrives,walksor roads.
18.If theequipmentshouldstartto vibrateabnormally,stopthe
engineandcheckimmediatelyfor the cause.Vibrationis
generallya warningoftrouble.
4
19.Shuttheengineoff andwait untilthe bladecomesto a
completestopbeforeremovingthe grasscatcheror unclog-
ging thechute.
The cuttingbladecontinuesto rotatefora fewsecondsafter
the engineisshutoff. Neverplaceany partofthe bodyin
the bladearea untilyouaresurethe bladehasstopped
rotating.
20. Neveroperatemowerwithoutpropertrail shield,discharge
cover,grasscatcher,bladecontrolhandleor othersafety
protectivedevicesin placeandworking.Neveroperate
mowerwithdamagedsafetydevices.Failuretodo socan
resultin personalinjury.
21. Mufflerandenginebecomehotandcan causeaburn.Do
nottouch.
22.Only usepartsandaccessoriesmadeforthismachineby
manufacturer.Failuretodo socanresultinpersonalinjury.
23. Ifsituationsoccurwhicharenotcoveredin this manual,
usecareand goodjudgment.Contactyourdealerfor
assistance.Telephone1-800-800-7310forthe nameofyour
nearestdealer.
Slope Operation
Slopesareamajorfactorrelatedto slipandfallaccidents,which
can resultinsevereinjury.Operationonslopesrequiresextra
caution.Ifyoufeeluneasyon aslope,do notmowit.Foryour
safety,usetheslopegaugeincludedaspartofthis manualto
measureslopesbeforeoperatingthisunitonaslopedor hilly
area.Iftheslopeisgreaterthan15degrees,donot mowit.
Do:
1. Mowacrossthefaceofslopes;neverupanddown.Exercise
extremecautionwhenchangingdirectiononslopes.
2. Watchfor holes,ruts,rocks, hiddenobjects,or bumpswhich
can causeyouto slipor trip.Tallgrasscanhideobstacles.
3. Alwaysbesureofyourfooting.A slip andfall cancause
seriouspersonalinjury.Ifyoufeelyouarelosingyour
balance,releasethe bladecontrolhandleimmediately,and
the bladewill stoprotatingwithin3seconds.
Do Not:
1. Donot mowneardrop-offs,ditchesorembankments,you
could loseyourfootingorbalance.
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. Washyourskin andchangeclothesimmediately.
3. Useonlyanapprovedgasolinecontainer.
4. Neverfillcontainersinsideavehicleoron atruckor trailer
bedwitha plasticliner.Alwaysplacecontainersonthe
groundawayfromyourvehiclebeforefilling.
5. Removegas-poweredequipmentfromthe truckortrailer
andrefuelit onthe ground.Ifthisis notpossible,thenrefuel
suchequipmentonatrailerwitha portablecontainer,rather
thanfroma gasolinedispensernozzle.
6. Keepthe nozzlein contactwiththe rimofthefueltank or
containeropeningat alltimesuntilfuelingis complete.Do
notuseanozzlelock-opendevice.
7. Extinguishallcigarettes,cigars,pipesandothersources
ofignition.
8. Neverfuel machineindoorbecauseflammablevaporswill
accumulatein thearea.
9. Neverremovegascap oradd fuelwhileengineishot or
running. Allowengineto coolatleasttwominutesbefore
refueling.
10.Neveroverfillfueltank. Filltankto nomorethanY2inch
belowbottomoffiller neckto providefor fuelexpansion.
11.Replacegasolinecapandtightensecurely.
12.If gasolineis spilled,wipeitoff theengineand equipment.
Moveunittoanotherarea.Wait5minutesbeforestarting
engine.
13.Neverstorethe machineorfuel containernearanopen
flame,sparkor pilotlightasona waterheater,space
heater,furnace,clothesdryeror othergasappliances.
14.Toreducefire hazard,keepmowerfreeofgrass,leaves,
orother debrisbuild-up.Cleanupoil orfuelspillageand
removeanyfuel soakeddebris.
15.Allowamowertocoolat least5 minutesbeforestoring.
GeneralService:
1. Neverrunanengineindoorsorin apoorlyventilatedarea.
Engineexhaustcontainscarbonmonoxide,anodorlessand
deadlygas.
2. Beforecleaning,repairing,or inspecting,makecertainthe
bladeandall movingpartshavestopped.Disconnectthe
sparkplugwireandgroundagainstthe engineto prevent
unintendedstarting.
3. Checkthe bladeandenginemountingboltsatfrequent
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.
Thoroughlyinspectthe mowerforanydamage.Repairthe
damagebeforestartingandoperatingthemower.
8. Neverattemptto makea wheelor cuttingheightadjustment
whiletheengineis running.
9. Grasscatchercomponents,dischargecover,andtrail
shieldaresubjecttowear anddamagewhichcould expose
movingpartsor allowobjectsto bethrown.Forsafety
protection,frequentlycheckcomponentsandreplaceim-
mediatelywithoriginalequipmentmanufacturer's(O.E.M.)
partsonly,listedinthis manual."Useofpartswhich do
notmeetthe originalequipmentspecificationsmayleadto
improperperformanceandcompromisesafety!"
10.Do notchangetheenginegovernorsettingor over-revthe
engine.Thegovernorcontrolsthe maximumsafeoperating
speedoftheengine.
11.Maintainor replacesafetylabels,asnecessary.
12.Observeproperdisposallawsandregulations.Improper
disposaloffluidsandmaterialscanharmtheenvironment.
5
Operation
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 beforeattemptingto
operatethis machine.
Failureto comply with
these instructionsmay
result inpersonalinjury.
Whenyou seethis
symbol.
HEED IT'S WARNING!
YourResponsibility
Restrictthe use
of this powermachine
to personswho read.
understand
and followthe warnings
and instructions
in this manua
and onthe machine.
MOTElThisOperatoris
Manualcoversseveral
modelslLawnMower
featuiesvaryby
model:Notallfeatures
discussedinthis
manualareapplicable
to allLawnMower
NOTE:Standbehind
themowerasifyou
weregoingtooperate
it.YOLJrrighthand
correspondstotheright
sideofthemoweryour
efthandCorresponds
totheleftsideofthe
mower:
NOTEIYourmower
is shippedWiththe
handleinthehigher
heightposition,
NOTE:Eachendof
the lowerhandlemust
beplacedintheSame
relativepositionI
IMPORTANT
This unt sshipped
Withoutgasolineor
oilin theenginelFill
upgasolinea.ndoil
as instructedinthe
accompanyingengine
Step 1
f
._ardware Pack
_ Wing Nuts (2) Carriage Bolts (2)
1. Removeanypackingmaterialwhichmaybebetween
upperandlowerhandles.
a. Pullupand backon upperhandleasshownin
Step1.Makecertainthe lowerhandleis seated
securelyintothehandlemountingbrackets.
b. Tightenhandknobssecuringupperhandleto
lowerhandle.Makesurethateachcarriageboltis
seatedproperlyin thehandle.
2. Locatehairpinclipinone holeon theweldpinon each
sideof lowerhandle.
,
a. Removehairpinclipfromthis hole.Usinga pairof
pliers,inserthairpinclipintotheotherholeon the
weldpin.Repeaton otherside.
b. Inserta carriageboltfromthehardwarepackinto
theupperholeonthehandlemountingbracket.
Securewithone plasticwingnut,alsoincluded
inthehardwarepack.Repeatonothersidewith
remainingitemsfromhardwarepack.
Theropeguideisattachedtotherightsideofthe
upperhandle.Loosenthewingnutwhichsecuresthe
ropeguide.
a. Holdbladecontrolhandleagainstupperhandle.
b. Pullstarterropeoutoftheengine.Releaseblade
controlhandle.
c. Slipstarterropeintoropeguide.Tightenwingnut.
4. Insertpostoncabletiesintoholesprovidedon the
lowerhandle.Pullcabletietightandtrimexcess.
Step 2
Step 3 Step 4
6
5. An adjustingplateandthumbleverateachwheel
positionprovidescuttingheightadjustment.
a. Depresslevertowardswheel.
b. Moveittoanyof theninepositionsfordesired
cuttingheight.SeeStep5.
c. Releaselevertowardsmowerdeck.
6. Followstepsbelowtoassemblethegrasscatcher:
a. Placebagoverframesothat itsblackplasticside
is atthebottom.
b. Slip plasticchannelofgrassbagoverhooksonthe
frame.SeeStep6.All theplasticchannelsexcept
centertopof bagattachfromoutsideofbag.
c. Attachcentertopofbagfrominsideofbag.
7. Followstepsbelowtoattachgrasscatcher:
a. Liftreardischargedoor.
b. Placegrasscatcheron thepivotrod.Letgo
ofdischargedoorsothat itrestson thegrass
catcher.SeeStep7.
Toremovegrasscatcherorconverttoa mulcher,lift rear
dischargedooron themowerasshowninStep8. Lift
grasscatcherupandoutofthepivotrod.Releaserear
dischargedoortoallowittocloserearopeningof mower.
_IL ARNING: Never operate mower
unless the hooks on the grass
catcherare firmly seated in the
slotson the handle bracket as-
semblies, and the rear discharge
door rests firmly against top of
the grass catcher.
Step 5
Step 6
.,)
\
..... J
Step 7
7
uStment
CUTTING HEIGHT
Step5
All wheelsmust be
placedin thesame
relative positionl
GRASSCATCHER
Stepe
Makecertain bag is
turned right side out
before assembling
(warninglabelWillbe
onthe outside):
WARNING
Never operate mower
unlessthe hooks on
the grasscatcher are
firmly seated in the
slots on the handle
bracket assemblies,
and the rear dis-
charge door rests
firmly against top of
the grasscatcher.
/
WARNING
The blade control
mechanism is a
safety device. Never
attempt to bypass its
operations.
I Useextreme care
when handling
gasoline.Gasoline is
extremely flammable
and the vapors are
explosive. Never fuel
the machine indoors
or while the engine
is hot or running.
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
Recoil
--, Upper Handle
Lower Handle
Starter
Ro
Grass
Catcher
Oil Fill
Cutting Height
Adjustment Lever
(for eachwheel)
Gasoline Fill
Figure 1
Now that you have set up your lawn mower for op-
eration, get aquainted with its controls and features.
These are described below and illustrated on this
page. This knowledge will allow you to use your
new equipment to its fullest potential.
Blade Control
The blade control is attached to the upper handle
of the mower. Depress and squeeze it against the
upper handle to operate the unit. Release it to stop
engine and blade.
Recoil Starter
The recoil starter is attached to the right upper
handle. Stand behind the unit and pull the recoil
starter rope to start the unit.
Gas and Oil Fill-Up
1. Check oil level and add oil if necessary. Follow engine
manual for this. See Figure 1above for location of the
oil fill.
2. Servicetheenginewithgasolineasinstructedinthe
enginemanual. SeeFigure1aboveforlocationof
gasfill.
__1 WARNING:Thisblade controlmecha-
nism isa safety device. Neverattempt
to bypass itsoperations.
Cutting Height Adjustment Levers
One adjustment lever is located on each wheel and
is used to adjust the cutting height. All four levers
have to be at the same relative position to ensure a
uniform cut.
__k ARNING:Useextremecarewhenhan-
dling gasoline.Gasolineis extremely
flammableand the vapors areexplosive.
Neverfuel the machine indoorsor while
the engine ishot or running. Extinguish
cigarettes, cigars, pipesand other
sources of ignition.
8
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,hairand loose clothing
awayfrom any moving partson engine
and lawnmower.
1. Placethefuelvalveleverfoundontheleft sideofthe
engineintotheOPENposition.SeeFigure2 inset.
2. Movethechokeleverall thewaybackwardintothe
chokeposition.Oncetheengineiswarm,theleverwill
automaticallyreverttothe RUNposition.Refertothe
enginemanualforfurtherdetails.
3. Standingbehindthe mower,squeezethebladecontrol
againstupperhandle.SeeFigure2.
4. Holdingthesetwo handlestogetherfirmly,grasprecoil
starterhandleand pullropeoutwitha rapid,continu-
ous,fullarmstroke.SeeFigure2.Keepinga firm
grip onthestarterhandle,lettheroperewindslowly.
Repeatuntilenginecranks.Letthe roperewindeach
timeslowly.
_kk ARNING:Waitfor the blade to stop
completely beforedoing anywork
on the mower or to removethegrass
catcher.
Stopping Engine
1. Releasebladecontroltostoptheengineand blade.
2. Disconnectsparkplugwirefromsparkplugand
groundagainsttheengine.
UsingYour Lawn Mower
_kl= WARNING:Neveroperateyour mower
without eitherthe rear door or the entire
grass catcher assembly firmly secured.
Besurelawnisclearof stones,sticks,wire,or other
objectswhichcoulddamagelawnmowerorengine.
Suchobjectscouldbe accidentlythrownbythemower
in anydirectionandcauseseriouspersonalinjurytothe
operatorandothers.
Figure 2
_klL ARNING:If you strikeaforeign
object, stopthe engine.Remove
wire from thespark plug,thoroughly
inspectmowerfor anydamage,and
repairdamagebeforerestarting and
operating. Extensive vibration of
mower during operation isan indica-
tion of damage.The unit should be
promptlyinspectedand repaired.
1. Forbest results,do notcut wetgrass.
2. Fora healthierlawn,nevercut offmorethanone-
thirdofthetotallengthofthegrass.
Using as Mulcher
Formulchinggrass,removethegrasscatcherfromthe
mower.Thereardischargedoorshouldbeclosed.
1. Foreffectivemulching,do notcut wetgrass.
2. Newor thickgrassmayrequirea narrowercut.
Adjustgroundspeedaccordingtoconditionoflawn.
3. If thegrasshasbeenallowedto growinexcessof
4 inches,mulchingisnotrecommended.Usethe
grasscatchertobagclippingsinstead.
Using Grass Catcher
Youcanusethegrasscatchertocollectclippingswhile
youareoperatingthemower.
1. Attachgrasscatcherfollowinginstructionson page
7. Grassclippingswillautomaticallycollectinthe
bagasyourunthe mower.Operatethemowertillthe
grassbagisfull.
2. Stopenginecompletelybyreleasingtheblade
controlhandle.Makesurethattheunithascometo
a completestop.
3. Liftdischargedoorandpullgrassbagup andaway
fromthe mowertodisposeofthegrassclippings.
Mower
WARNING
The operation of any
lawn mower can result
inforeign objects
being thrown into
the eyes, whichcan
damage your eyes
severely. Always wear
safety glasseswhile
operating the mower,
or whileperforming
any adjustments or
repairs on it.
Be sureno one other
than the operator is
standing near the lawn
mower while starting
engine or operating
mower. Never run
engine indoorsor
n enclosed, poorly
ventilated areas. En-
gineexhaust contains
carbon monoxide, an
odorless and deadly
gas. Keep hands,feet,
hair and loose clothing
away from any moving
partson engine and
lawn mower.
9
Maintaining
WARNING
Alwaysstopengine,
disconnectspark
plug,andground
againstenginebefore
cleaning,lubricating
ordoinganykindof
maintenanceonyour
machine.
I Never tip the mower
more than 90 degrees
in any directions
and do not leavethe
mower tipped for any
i length oftime. Oil can
drain intothe upper
part of the engine
causing a starting
i problem.
Lubricatethese
_ointsbefore
reassembly.
Figure 3
General Recommendations
1. Alwaysobservesafetyruleswhenperforming
anymaintenance.
2. Thewarrantyon thislawnmowerdoesnotcover
itemsthathavebeensubjectedtooperatorabuse
ornegligence.Toreceivefullvaluefromwarranty,
operatormustmaintainthelawnmoweras
instructedhere.
3. Changingofengine-governedspeedwillvoid
enginewarranty.
4. Alladjustmentsshouldbecheckedat leastonce
eachseason.
5. Periodicallycheckallfastenersand makesurethese
aretight.
,_ WARNING: Alwaysstop engine,
disconnect spark plug, and
groundagainst engine before
cleaning, lubricating or doing
any kind of maintenanceon your
machine.
Lubrication
1. Lubricatepivotpointson thebladecontrolhandleat
leastoncea seasonwith lightoil.Thebladecontrol
mustoperatefreelyinbothdirections.SeeFigure3.
2. Lubricatethewheelsatleastoncea seasonwith
lightoil (ormotoroil). If wheelsareremovedforany
reason,lubricatesurfaceofthepivotarmandinner
surfaceof thewheelwithlightoil.SeeFigure3.
3. Lubricatethetorsionspringandpivotpointonthe
reardischargedoorperiodicallywithlightoil to
preventrust.SeeFigure3.
4. Followtheaccompanyingenginemanualforlubrica-
tionscheduleandinstructionforenginelubrication.
Deck Care
Clean underside of the mower deck after each use
to prevent build-up of grass clippings or other debris.
Follow steps belowfor this job.
1. Disconnectsparkplugwire.Draingasolinefromlawn
mower,or placea pieceof plasticunderthegascap.
2. Tipmowersothat itrestsonthe housing.Keepthe
sidewiththeair cleanerfacingup.Holdmowerfirmly.
,__, WARNING: Never tip the mower
more than 90 degrees in any
-- directions and do not leave the
mower tipped for any length of
time. Oil can drain intothe upper
part of the engine causing a
starting problem.
3. Scrapeandcleantheundersideofthedeckwitha
suitabletool.Donotspraywithwater.
4. Putthemowerbackonitswheelsontheground.If
youhad putplasticunderthegascapearlier,make
sureto removeitnow.
NOTE: Wedo notrecommend the
useofpressure washersor garden
hose tocleanyour unit. Thesemay
cause damageto electriccompo-
nents, spindles,pulleys,bearings,
or theengine. Theuseof water will
result inshortened fifeand reduce
serviceability.
Engine Care
A listofkeyenginemaintenancejobs requiredforgood
performancebythemowerisgivenbelow.Followthe
accompanyingenginemanualforadetailedlistand
instructions.
1. Maintainoil levelasinstructedinenginemanual.
2. Serviceaircleanerevery25 hoursundernormal
conditions.Cleaneveryfewhoursunderextremely
dustyconditions.Poorengineperformanceand
floodingusuallyindicatesthattheaircleanershould
beserviced.Toservicetheaircleaner,refertothe
enginemanual.
3. Cleansparkplugand resetthegaponcea season.
Sparkplugreplacementisrecommendedatthestart
ofeachmowingseason.Checkenginemanualfor
correctplugtypeand gapspecifications.
4. Cleanengineregularlywitha clothorbrush.Keepthe
coolingsystem(blowerhousingarea)cleantopermit
properaircirculation.Removeall grass,dirtand
combustibledebrisfrommufflerarea.
10
Blade Care " "
_ ARNING: When removing the
cutting blade for sharpening or
replacement, protect your hands
with a pair of heavy gloves or use
a heavy rag to hold the blade.
Periodicallyinspectthebladeadapterforcracks,
especiallyif youstrikea foreignobject.Replacewhen
necessary.Followthe stepsbelowforbladeservice.
1. Disconnectsparkplugwirefromsparkplug.Turn
moweron itssidemakingsurethattheairfilterand
thecarburetorareup.
2. Removetheboltandthe bladebellsupportwhich
holdthebladeand thebladeadaptertotheengine
crankshaft.See Figure4.
3. Removebladeandadapterfromthecrankshaft.
4. Thebladecanbe sharpenedwitha fileor on a grind-
ingwheel.Donotattempttosharpenthebladewhileit
isstillonthemower.
5. Whensharpeningtheblade,followtheoriginalangle
ofgrind.Grindeachcuttingedgeequallyto keepthe
bladebalanced.
.
7.
Removebladefromtheadapterfortestingbalance.
Balancethebladeona roundshaftscrewdriverto
check.Removemetalfromtheheavysideuntilit
balancesevenly.
,__ WARNING: An unbalanced blade
will cause excessive vibration
when rotating at high speeds, it
may cause damage to mower, and
could break causing personal
injury.
8. Lubricatetheenginecrankshaftandtheinnersurface
ofthebladeadapterwithlightoil.Slidetheblade
adapterontotheenginecrankshaft.
9. Placethebladeon theadaptersuchthattheside
oftheblademarked"Bottom"(orwithpartnumber)
facesthegroundwhenthemowerisintheoperating
position.Makesurethatthebladeisalignedand
seatedon thebladeadapterflanges.
10.Placebladebellsupportonthe blade.Alignnotches
on thebladebell supportwith smallholesinblade.
11.Replacehexboltandtightenhexboltto torque:450
in.Ibs.rain.,600 in.Ibs.max.
Toensuresafeoperationofyourmower,periodically
checkthebladeboltforcorrecttorque.
Figure 4
J
Figure 5
Replacing Rear Flap
1. Toremoverearflap,cutoff theflatendofthewire
rodwhichsecuresittothedeck.See Figure5.
2. Attachthenewflapand newrodtodeck,bending
theendsofthenewrodoverto securetodeck.
Off-Season Storage
Thefollowingstepsshouldbetakento prepareyour
lawnmowerforstorage.
1. Cleanandlubricatemowerthoroughlyasdescribed
inthe lubricationinstructions.
2. Wedo notrecommendtheuseofa pressurewasher
orgardenhosetocleanyourunit.
3. Refertoenginemanualforcorrectengine
storageinstructions.
4. Coatmower'scuttingbladewithchassisgreaseto
preventrusting.
5. Storemowerina dry,cleanarea.Donotstorenext
tocorrosivematerials,suchas fertilizer.
Whenstoringanytypeof powerequipmentin a poorly
ventilatedor metalstorageshed,careshouldbetaken
torust-prooftheequipment.Usinga lightoil or silicone,
coattheequipment,especiallycablesandall moving
partsofyourlawnmowerbeforestorage.
Maintaining
Yo ur LaWn
ower
WARNING
When removing
the cutting blade
for sharpening or
replacement, protect
your handswith a
pair of heavy gloves
or use a heavy ragto
holdthe blade.
An unbalanced blade
will causeexcessive
vibration when rotat-
ing at high speeds, it
may cause damage
to mower, and could
break causing per-
sonal injury.
11
Forrepairs beyond
the minor adjustments
listed here, contact
an authorized service
dealer.
i
Problem Cause Remedy
En n f ils to start Bladecontrolhandledisengaged
I 1: Engagebladecontrolhandle.
g ea , ....
2. Sparkplugwiredisconnected. 21 connectwireto sparkplug,
&Fuel tankemptyorstalefuel. & Fill tankwith€ieanlfreshgasolinei
41 Enginenotprirned. & Primeengineasinstructedin
OPerating ouiLawnMowei
Fut sark u 5 Cean adjustgap or repace
a y p p!g,
6. Blockedfueliinel 6, Cleanfuelline;
7 Engine flooded 7. Waitafew minutestorestart,but
do notprime.
Engineruns erratic
1. Sparkplugwireloose.
2. Blockedfuellineor stalefuel.
3. Ventingascapplugged.
4. Waterordirt infuelsystem.
5. Dirtyaircleaner.
6. Carburetoroutofadjustment.
1. Connectandtightenspark
plugwire.
2. Cleanfuelline;filltankwithclean,
freshgasoline.
3. Clearvent.
4. Drainfueltank.Refillwith
freshfuel.
5. Refertoenginemanual.
6. Refertoenginemanual.
Engne overheats 1 Engneoil levellow. 1. FIIcrankcasewithproperoil.
2. Airflow restricted• I 2. Removeblowerhousing
! I, andclean•
I 3. Carburetornotadjustedproperly• 3. Referto enginemanual.
Occasionalskips 1. Sparkpluggaptooclose. 1. Adjustgap to.030".
(hesitates)at 2. Carburetoridlemixtureadjustment 2. Refertoenginemanual.
highspeed improperlyset.
Idlespoorly 1. Sparkplugfouled,faultyorgap 1. Resetgapto .030"orreplace
toowide. sparkplug
2 Carburetorimproperlyadjusted. 2. Referto enginemanual•
. 3 Dirtyaircleaner. . 3 Referto enginemanual.
Excessive 1. Cuttingbladelooseor unbalanced. 1. Tightenbladeandadapter.
Vibration Balanceblade.
2. Bentcuttingblade. 2. Seean authorizedservicedealer.
Mowerwillnot 1. Wetgrass. 1. Donotmowwhengrassiswet
mulch grass wait untilatertocut.
2 Excessivel' highgrass I 2. Mowonceata highcuttingheight,
• Y " thenmowagainatdesiredheight
I I or makea narrowercuttingpath.
3 Dullblade
I " ' I 3. Sharpenorreplaceblade•
Unevencut 1. Wheelsnotpositionedcorrectly. 1. Placeall fourwheelsin same
heightposition.
2. Dullblade. 2. Sharpenor replaceblade.
12
13
ii i _iI_ii
14
1 747-1161A Blade Control Handle
2 749-1092A Upper Handle
3 747-04080 Grass Catcher Frame
4 749-0928A Lower Handle
5 720-0279 Wing Nut
6 710-1205 Rope Guide
7 710-1174 Carriage Bolt ,5/16-18x 2
8 664-04027 Grass Bag Assembly
9 720-0284 Hand Knob
10 736-0451 Saddle Washer
11 726-0240 Cable Tie
12 710-0703 Carriage Bolt,I/4-20
13 731-04134A Rear Discharge Door
14 750-04162 Spacer
15 732-04089A Torsion Spring- LH
16 732-04090A Torsion Spring- RH
17 731-04150 Rear Baffle
18 731-1426A Hubcap
19 787-01208 Deck- 21"
20 710-0286 AB Screw, 10-16x .500"
21 782-5002B Front Baffle
22 748-0377C Blade Adapter
23 742-0741 Mulching Blade
24 710-1257 Hex Bolt, 3/8-24 x 1.5
25 687-02077 Pivot Arm Assembly RH (8" wheel)
687-02076 Pivot Arm Assembly LH (8" wheel)
26 736-0524B Blade Bell Support
27 15261C FrontAdjustmentPlate
28 720-0426 AdjustmentLeverKnob
29 732-0404 SpringLeverAssembly
30 738-0507B ShoulderScrew
31 734-2004A FrontWheel8x2.125ZagBBBlack
32 710-04371 Screw,1/4-15x 1.250
33 746-1130 ControlCable-40"
34 712-04064 FlangeLockNut,1/4-20
35 731-04998 Trailshield
36 732-0700 TrailshieldWire
37 712-0397 WingNut,1/4-20
38 747-04035 RearDoorPivotRod
39 732-04175 SpringLever
40 687-02071 PivotArmAssembly- RH
687-02070 PivotArmAssembly- LH
41 710-1652 ABScrew
42 712-0431 FlangeLockNut,3/8-16
43 714-0104 HairpinClip
44 710-0654A TTSeresScrew,3/8-16x 1.0
45 687-02074 Ht.Adj.Assy.Front- RH(8"Wheel)
687-02075 Ht.Adj.Assy.Front- LH(8"Wheel)
46 687-02069 RearHandleBracketAssy.- LH
687-02068 RearHandleBracketAssy.- RH
47 738-04136 ShoulderScrew
49 736-0504 WaveWasher.510X .750X .017
15
To order replacement
partsl contact
1,800,800=7310
wwwlyardman:com
MANUFACTURER'S LiMiTED WARRANTY FOR
YaRD-MaN,
ThelimitedwarrantysetforthbelowisgivenbyMTDLLCwithrespectto
newmerchandisepurchasedandusedin theUnitedStates,itsposses-
sionsandterritories.
"MTD"warrantsthisproductagainstdefectsin materialandworkmanship
fora periodoftwo(2) yearscommencingonthedateoforiginalpurchase
andwill,atits option,repairor replace,freeofcharge,anypartfoundto
bedefectiveinmaterialsor workmanship.Thislimitedwarrantyshallonly
applyifthis producthasbeenoperatedandmaintainedinaccordance
withtheOperator'sManualfurnishedwiththeproduct,andhasnotbeen
subjectto misuse,abuse,commercialuse,neglect,accident,improper
maintenance,alteration,vandalism,theft,fire,water,ordamagebecause
ofotherperilor naturaldisaster.Damageresultingfromtheinstallationor
useofanypart,accessoryorattachmentnotapprovedbyMTDforuse
withtheproduct(s)coveredbythis manualwillvoidyourwarrantyasto
anyresultingdamage.
Normalwearpartsarewarrantedto befreefromdefectsinmaterialand
workmanshipfora periodofthirty(30)daysfromthedateof purchase.
Normalwearpartsinclude,butare notlimitedto itemssuchas: batteries,
belts,blades,bladeadapters,grassbags,riderdeckwheels,seats,snow
throwerskidshoes,shaveplates,augerspiralrubberandtires.
HOWTOOBTAINSERVICE:Warrantyserviceisavailable,WITH
PROOFOFPURCHASE,throughyourlocalauthorizedservicedealer.To
locatethedealerin yourarea,checkyourYellowPages,orcontactMTD
LLCatRO.Box361131,Cleveland,Ohio44136-0019,or call1-800-800-
7310or logon toourWebsiteatwww.mtdproducts.com.
Thislimitedwarrantydoesnot providecoverageinthefollowingcases:
a. Theengineor componentpartsthereof.Theseitemsmay
carrya separatemanufacturer'swarranty.Refertoapplicable
manufacturer'swarrantyfortermsandconditions.
b. Logsplitterpumps,valves,andcylindershavea separateone
yearwarranty.
c. Routinemaintenanceitemssuchaslubricants,filters,blade
sharpening,tune-ups,brakeadjustments,clutch adjustments,
deckadjustments,andnormaldeteriorationoftheexteriorfinish
duetouseorexposure.
d. Servicecompletedbysomeoneotherthananauthorizedservice
dealer.
e.
f.
g.
MTDdoesnotextendanywarrantyforproductssoldor
exportedoutsideoftheUnitedStates,its possessionsand
territories,exceptthosesoldthroughMTD'sauthorized
channelsofexportdistribution.
ReplacementpartsthatarenotgenuineMTDparts.
Transportationchargesand servicecalls.
No impliedwarranty, includinganyimpliedwarranty of merchant-
ability of fitness for a particularpurpose,applies after the applicable
periodof expresswritten warranty aboveas to the partsas identi-
fied. Noother expresswarranty, whether written or oral, exceptas
mentionedabove,given byanypersonor entity,includinga dealer
or retailer,with respect to anyproduct,shallbindMTD.Duringthe
periodof the warranty, the exclusiveremedyisrepairor replacement
of the productas setforth above.
Theprovisionsas setforth inthis warrantyprovidethe soleand
exclusiveremedyarising from the sale.MTDshallnot beliable
for incidentalor consequentialloss or damageincluding,without
limitation, expensesincurredfor substituteor replacement lawncare
servicesor for rentalexpensesto temporarily replacea warranted
product.
Somestatesdo notallowtheexclusionor limitationofincidentalor
consequentialdamages,or limitationson howlonganimpliedwarranty
lasts,sotheaboveexclusionsor limitationsmaynotapplytoyou.
Innoeventshallrecoveryofanykindbegreaterthantheamountofthe
purchasepriceoftheproductsold.Alterationof safety features of the
productshallvoid this warranty. Youassumetheriskandliabilityfor
loss,damage,or injurytoyouandyourpropertyand/ortoothersandtheir
propertyarisingoutofthemisuseor inabilitytousetheproduct.
Thislimitedwarrantyshallnotextendto anyoneotherthantheoriginal
purchaseror tothepersonforwhomitwaspurchasedasa gift.
HOWSTATELAWRELATESTOTHISWARRANTY: Thislimitedwar-
rantygivesyouspecificlegalrights,andyoumayalsohaveotherrights
whichvaryfromstatetostate.
IMPORTANT:OwnermustpresentOriginalProofofPurchasetoobtain
warrantycoverage.
MTD LLC, P.O. BOX 361131 CLEVELAND, OHIO 44136=0019; Phone: 1=800=800=7310
/