MTD 11A 439Q755 User Manual LAWN MOWER Manuals And Guides 1107433L

User Manual: MTD 11A-439Q755 11A-439Q755 MTD LAWN MOWER - Manuals and Guides View the owners manual for your MTD LAWN MOWER #11A439Q755. Home:Lawn & Garden Parts:MTD Parts:MTD LAWN MOWER Manual

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

Model435A shown

21=inch Rotary Mower-

Model Series 430

IMPORTANT
READ SAFETY

RULES AND iNSTRUCTiONS

CAREFULLY

BEFORE

OPERATION

Warning: This unit isequippedwith an internalcombustionengineand shouldnot be usedon or nearany unimprovedforest-covered,brushcoveredor grass-coveredland unlesstheengine'sexhaustsystemis equippedwith a sparkarrestermeetingapplicablelocalor statelaws(if any).
If a sparkarresterisused,it shouldbe maintainedineffectiveworkingorder by the operator.In theState of Californiathe aboveisrequiredbylaw
(Section4442 of the CaliforniaPublicResourcesCode). Otherstatesmay havesimilarlaws.Federallaws applyon federallands.A sparkarrester
for the muffleris availablethroughyour nearestengineauthorizedservicedealeror contactthe servicedepartment,RO. Box361131Cleveland,
Ohio 44136-0019.

PRINTEDIN U.S.A.

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

FORMNO. 770-10179G
12/12/2005

This Operator's Manual is an important part of your new lawn mower, it wiil help you assemble,
prepare, and maintain the unit for best performance.
Please read and understand what it says.

Table of Contents
Slope Gauge .......................................................
Safe Operation Practices ...................................
Setup and Adjustment .......................................
Operating Your Lawn Mower ..............................
Maintaining Your Lawn Mower .........................

3
4
6
8
10

Troubleshooting ................................................
Safety Labels ....................................................
Parts List ...........................................................
Warranty ............................................

12
13
14

Back Cover

Finding and Recording Model Number
BEFOREASSEMBLINGYOUR NEW EQUIPMENT,please
locate the model plate on the equipment and copy the
information to the sample model plate provided to the right.
You can locate the model plate by standing at the operating
position and looking down at the rear of the deck. This information will be necessary to use the manufacturer'sweb site,
obtain assistance from the Customer Support Department,or
when contacting an authorized service dealer.

Model Number

Serial Number

MTD
LLC
P. O. BOX 361131
CLEVELAND,OH 44136
330-220-4683
800-800-7310

,.wwwmtdpr°ductsc°m

Customer Support
Please do IVOTreturn
purchased,

without

the unit to the retailer from which it was
first contacting

Customer

Support.

If you have difficulty assembling this product or have any questions regardingthe controls, operation,or maintenanceof this
unit, you can seek help from the experts. Choose from the options below:
• Visit www.mtdproducts.com. Click on the Service & Support menu option.

, ,

Ser,,q,:°

8 Suppo_':

Product

P.egistration

, @i

• Phone a Customer Support Representativeat 1-800-800-7310.
• The engine manufacturer is responsible for all engine-related issues with regards to performance, power-rating,specifications, warranty and service. Please refer to the engine manufacturer'sOwner's/Operator's Manual, packed separatelywith
your unit, for more information.
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WARNING: Engine Exhaust, some of its constituents, and certain vehicle components contain or emit chemicals known to State of Californiato cause cancer and
birth defects or other reproductiveharm.
DANGER: This machine was built to be operated according to the rules for safe operation in this
manual. As with any type of power equipment, carelessness or error on the part of the operator can
result in serious injury. This machine is capable of amputating hands and feet and throwing objects.
Failureto observe the following safety instructions could result in serious injury or death.

Children

WARNING
This symbol points
out importantsafety
instructionswhich, if
not followed,could
endangerthe personal
i safety and/or property
I ofyourselfand others.
Read and follow all
instructionsin this
manual beforeattemptingto operate
i this machine. Failure
I to comply with these
instructionsmay result
i in personalinjury.When
you see this symbol.
i HEED ITS WARNING!

Your Responsibility
Restrictthe use
of this power machine
to personswho read,
_ understand
ano follow the warnings
and instructions
in this manual
and on the machine.

Tragicaccidentscan occur if operatoris not alert to presence
of children.Childrenare oftenattractedto mowerand mowing
activity.Theydo not understandthe dangers.Neverassume
thatchildrenwill remainwhereyou lastsawthem.
1. Keepchildrenout of the mowingareaand underwatchful
careof a responsibleadultotherthanthe operator.
2. Be alert andturn moweroff if a childentersthe area.
3. Beforeand whilemovingbackwards,look behindanddown
forsmallchildren.
4. Useextremecare when approachingblind corners,
doorways,shrubs,trees,or otherobjectsthat may obscure
yourvisionof a child whomay run intothe mower.
5. Keepchildrenawayfrom hot or runningengines.Theycan
sufferburnsfrom a hot muffler.
6. Neverallowchildrenunder14 yearsoldto operatea power
mower.Children14 yearsoldand overshouldreadand
understandoperationinstructionsandsafetyrulesinthis
manualandshouldbe trainedandsupervisedbya parent.

General

Operation

1. Readthis operator'smanualcarefullyin its entiretybefore
attemptingto assemblethis machine.Read,understand,
andfollowall instructionson the machineandin the
manual(s)beforeoperation.Be completelyfamiliar with
the controls andthe proper useof this machinebefore
operatingit. Keepthis manualin a safe place forfuture
and regularreferenceand for orderingreplacementparts.
2. This machineis a precision pieceof powerequipment,
not a plaything.Therefore,exerciseextremecautionat all
times.Yourunit has beendesignedto performonejob: to
mowgrass. Do not use it for any otherpurpose.
3. Neverallow childrenunder 14yearsold to operatethis
machine.Children 14yearsold and overshould readand
understandthe instructionsinthis manualandshould
be trainedand supervisedby a parent.Onlyresponsible
individualswho arefamiliar withthese rulesof safe
operationshould be allowedto usethis machine.
4. Thoroughlyinspectthe area wherethe equipmentis to
be used. Removeall stones,sticks,wire, bones,toys
andotherforeignobjects, whichcould be trippedover or
picked up andthrown bythe blade.Thrownobjects can
causeseriouspersonalinjury.Plan your mowingpattern
to avoid dischargeof materialtoward roads,sidewalks,
bystandersandthe like.Also,avoid dischargingmaterial
againsta wall or obstruction,whichmay causedischarged
materialto ricochetback towardthe operator.
5. Tohelp avoid bladecontact or a thrown objectinjury,
stay inoperatorzone behindhandlesand keepchildren,
bystanders,helpersand pets at least 75 feetfrom mower
whileit is inoperation.Stop machineif anyoneenters
area.

6. Alwayswearsafetyglasses or safetygogglesduringoperation andwhile performingan adjustmentor repairto protect
youreyes. Thrownobjectswhich ricochetcan causeserious
injury to the eyes.
7. Wearsturdy, rough-soledworkshoesand close-fitting
slacksandshirts. Shirtsand pantsthatcoverthe arms and
legs andsteel-toedshoesare recommended.Neveroperate
this machinein bare feet,sandals, slipperyor light-weight
(e.g. canvas)shoes.
8. Do not put hands or feet near rotatingparts or undercutting
deck. Contactwithblade can amputatehands andfeet.
9. A missingor damageddischargecovercan cause blade
contactor thrownobject injuries.
10. Manyinjuriesoccuras a resultof the mowerbeing pulled
overthe foot duringa fall causedby slippingor tripping.
Do not hold on to the mower if you are falling; releasethe
handle immediately.
11. Neverpullthe mowerback towardyou whileyou are
walking.If you must backthe mowerawayfrom a wall or
obstructionfirst look down and behindto avoid trippingand
thenfollowthese steps:
a. Stepback from mowerto fully extend yourarms.
b. Be sure youare well balancedwithsurefooting.
c. Pullthe mowerback slowly,no morethan half way
toward you.
d. Repeatthesesteps as needed.
12. Do not operatethe mowerwhileunderthe influenceof
alcoholor drugs.
13. Do not engagethe self-propelledmechanismon unitsso
equippedwhilestartingengine.
14. The bladecontrol handle is a safetydevice.Neverattempt
to bypassits operation.Doingso makesthe safetydevice
inoperativeandmay result in personalinjurythrough
contactwiththe rotatingblade. The bladecontrol handle
mustoperateeasily in bothdirectionsandautomatically
returnto the disengagedpositionwhen released.
15. Neveroperate the mowerinwet grass. Alwaysbe sure of
yourfooting. A slip and fall can causeseriouspersonal
injury.If you feel you are losing yourfooting,releasethe
bladecontrol handle immediatelyand the bladewill stop
rotatingwithinthreeseconds.
16. Mowonly in daylightor good artificial light. Walk,never run.
17. Stopthe bladewhen crossinggraveldrives, walksor roads.
18. If the equipmentshouldstartto vibrateabnormally,stop the
engineand check immediatelyfor the cause.Vibrationis
generallya warningof trouble.

19.Shut the engine off andwait untilthe bladecomesto a
completestop before removingthe grasscatcheror unclogging the chute.
The cuttingbladecontinuesto rotatefor a fewseconds after
the engine is shut off. Neverplaceany part of the bodyin
the bladearea untilyou are surethe blade hasstopped
rotating.
20. Neveroperate mowerwithoutpropertrail shield, discharge
cover,grass catcher,bladecontrol handleor othersafety
protectivedevices in placeand working.Neveroperate
mowerwithdamagedsafetydevices.Failureto do so can
resultin personalinjury.
21. Mufflerandengine becomehot andcan causea burn.Do
not touch.

7. Extinguishall cigarettes,cigars, pipesand othersources
of ignition.
8. Neverfuel machineindoorbecauseflammablevapors will
accumulatein the area.
9. Neverremovegas cap or add fuel whileengine is hot or
running. Allow engineto cool at least two minutesbefore
refueling.
10. Neveroverfill fuel tank. Filltank to no morethan Y2inch
below bottomof filler neckto providefor fuel expansion.
11. Replacegasoline cap andtighten securely.
12. If gasolineis spilled,wipe it off the engine and equipment.
Moveunit to another area.Wait 5 minutesbeforestarting
engine.
13. Neverstorethe machineor fuel containernear an open
flame,sparkor pilot light as on a water heater,space
heater,furnace, clothesdryeror othergas appliances.
14. Toreducefire hazard,keepmowerfree of grass, leaves,
or other debrisbuild-up.Clean up oil or fuel spillage and
removeany fuel soakeddebris.
15. Allow a mowerto cool at least5 minutesbeforestoring.

22. Only use parts and accessoriesmadefor this machineby
manufacturer.Failureto do so can result inpersonalinjury.
23. If situationsoccurwhich are not coveredin this manual,
use careand goodjudgment. Contactyourdealerfor
assistance.Telephone1-800-800-7310for the name of your
nearestdealer.

Operation

General Service:

Slope Operation

1. Neverrun an engine indoorsor in a poorlyventilatedarea.
Engineexhaustcontainscarbonmonoxide,an odorlessand
deadlygas.
2. Beforecleaning,repairing,or inspecting,makecertainthe
bladeandall movingparts havestopped.Disconnectthe
sparkplug wire andgroundagainstthe engineto prevent
unintendedstarting.
3. Checkthe bladeandengine mountingbolts atfrequent
intervalsfor propertightness.Also,visuallyinspectbladefor
damage(e.g.,bent,cracked,worn) Replacebladewiththe
originalequipmentmanufacture's(O.E.M.)bladeonly,listed
inthis manual."Use of partswhichdo not meetthe original
equipmentspecificationsmay leadto improperperformance
andcompromisesafety!"
4. Mowerbladesare sharp andcan cut.Wrap the bladeor wear
gloves,anduse extracautionwhen servicingthem.
5. Keepall nuts,bolts, andscrewstight to be surethe equipmentis insafe workingcondition.
6. Nevertamperwithsafetydevices.Checktheir proper operation regularly.
7. Afterstrikinga foreignobject,stop the engine,disconnect the sparkplug wire andgroundagainstthe engine.
Thoroughlyinspectthe mowerfor any damage.Repairthe
damagebeforestartingandoperatingthe mower.
8. Neverattemptto makea wheel or cuttingheightadjustment
whilethe engine is running.
9. Grasscatchercomponents,dischargecover,andtrail
shield aresubjectto wear anddamagewhichcould expose
movingparts or allowobjectsto be thrown.For safety
protection,frequentlycheck componentsandreplaceimmediatelywithoriginal equipmentmanufacturer's(O.E.M.)
parts only,listed inthis manual."Use of parts which do
not meetthe original equipmentspecificationsmaylead to
improperperformanceandcompromisesafety!"
10. Do not changethe enginegovernorsettingor over-revthe
engine.The governorcontrolsthe maximumsafe operating
speedof the engine.
11. Maintainor replacesafetylabels,as necessary.
12. Observeproperdisposallawsand regulations.Improper
disposalof fluidsand materialscan harmthe environment.

Slopesare a majorfactor relatedto slip andfallaccidents,which
can resultinsevereinjury.Operationon slopes requiresextra
caution.If you feel uneasyon a slope,do not mow it.For your
safety,usethe slope gaugeincludedas part of this manualto
measureslopes beforeoperatingthis unit on a slopedor hilly
area.If the slope is greaterthan 15degrees,do not mowit.

Do:
1. Mowacrossthe face of slopes;neverup anddown.Exercise
extremecautionwhenchangingdirectionon slopes.
2. Watchfor holes,ruts,rocks, hiddenobjects,or bumpswhich
can causeyouto slip or trip. Tallgrass can hide obstacles.
3. Alwaysbe sure of yourfooting.A slip andfall can cause
serious personalinjury.If you feel you are losingyour
balance,releasethe bladecontrol handle immediately,and
the bladewill stop rotatingwithin 3 seconds.

Do Not:
1. Donot mownear drop-offs, ditchesor embankments,you
could loseyour footing or balance.
2. Donot mowslopes greaterthan 15degrees asshown on
the slope gauge.
3. Donot mowon wetgrass. Unstablefooting could cause
slipping.

Service
Safe Handling Of Gasoline:
1. To avoid personalinjury or propertydamage useextreme
care inhandlinggasoline. Gasolineis extremelyflammable
and the vapors are explosive.Serious personalinjury can
occur when gasolineis spilled on yourself or your clothes,
which can ignite.
2. Wash yourskin andchangeclothesimmediately.
3. Useonly an approvedgasolinecontainer.
4. Neverfill containers insidea vehicle or on a truckor trailer
bedwitha plasticliner.Alwaysplace containerson the
ground awayfrom yourvehicle beforefilling.
5. Removegas-poweredequipmentfromthe truck or trailer
and refuel it on the ground.If this is not possible,then refuel
such equipmenton a trailer witha portablecontainer,rather
than from a gasoline dispensernozzle.
6. Keepthe nozzlein contactwiththe rim of the fuel tank or
container openingat all times until fuelingis complete.Do
not use a nozzle lock-opendevice.

WARNING
This symbol points
out important safety
instructions, which if
not followed, could
endangerthe personal
safety and/or property
of yourselfand others.
Read and follow all
instructions in this manual before attempting to
operate this machine.
Failureto comply with
these instructions may
result in personal injury.
When you see this
symbol.
HEED

IT'S WARNING!

Your Responsibility
Restrictthe use
of this power machine
to persons who read.
understand
and follow the warnings
and instructions
in this manua
and on the machine.

This OperatorsManualcoversa rangeof product
specificationsfor variousmodels.Characteristicsand featuresdiscussedand/orillustratedin this manualmay not
be applicableto all models.MTDLLCreservesthe right
to changeproductspecifications,designs,and equipment
withoutnotice and withoutincurringobligation.
1. Removeanypackingmaterialwhich may be between
upperand lowerhandles.
a. Pull up and backon upperhandleas shownin
Figure3-1.Makecertain the lowerhandleis seated
securelyintothe handle mountingbrackets.
b. Tightenstar knobssecuringupperhandleto lower
handle,Figure3-1.Makesurethat eachcarriage
bolt is seatedproperlyin the handle.
2. Locatethe hairpinclipon the weldpin on eachside
lowerhandle.
Standbehindthe mower

Figure3-1: Unfold handleandtighten hardware.

as if you weregoingto
operateit. Yourright hand
i correspondsto the right
side ofthe mower;your
left handcorrespondsto
the leftside of the mower.

b. Inserta carriagebolt fromthe hardwarepack into
the upperhole on the handle mountingbracket,
Figure3-2. Securewith one plasticwing nut, also
includedthe hardwarepack.Repeaton otherside.

Makesureto routecable
outsidethe lowerhandle.

Do not crimpcablewhile
liftingthe handleup.

the accompanying engine
manual BEFOREoperatingyour mower.

The ropeguide is attachedto the right sideof the
upperhandle.Loosenthe wingnut which securesthe
rope guide,Figure3-3.
a. Holdblade controlhandleagainstupper handle.
b. Pull starterropeout of the engine.Releaseblade
controlhandle.

i I[vlPORTANT
i This unit isshippedwithout gasoline or oil in the
engine.Fill up gasoline
and oUas instructedin

Removehairpinclipfrom this hole.Usinga pair
of pliers,insert hairpinclip intothe holeon pin
closestto the bracket,Figure3-2. Repeaton other
side.

c. Slip starterrope into ropeguide.
d. Tightenwingnut.
WingNuts(2)

Figure3-2:Securelowerhandleto mountingbrackets.

Insertpost on cable ties intoholes providedon the
lowerhandle.Pull cabletie tight and trim excess,
Figure3-4.

\,\

Figure3-3:Pullrecoilstarterthroughropeguideandtighten.

Figure3-4:Securecabletohandleusingcableties.

5. Followstepsbelowto assemblethe grasscatcher

f--

(if needed).Makecertain bag is turnedrightside
out beforeassembling(warninglabelwill be on the
outside).
a. Placebag overframe sothat its black plasticside
is at the bottom.

Setupand

b. Slip plasticchannelof grass bagoverhooks on the
frame,Figure3-5.All the plasticchannelsexcept
centertop of bagattachfrom outsideof bag.

ustment

c. Attachcentertop of bag from insideof bag.
6. Followstepsbelowto attachthe grass catcher:
a. Lift rear dischargedoor.
b. Placegrass catcheron thepivot rod. Letgo
of dischargedoor sothat it restson thegrass
catcher,Figure3-6.
Figure3-5:Assemble
thegrasscatcher.

7. Yourmoweris shippedas a mulcher.Toconvertto
side discharge,makesuregrasscatcheris off of the
unit and rear dischargedoor is closed.
a. On the sideof the mower,lift the mulchingplug.

Never operate

b. Slide chute hooksunder hingepin on mulching
plug assembly.Lowerside mulchingplug,Figure
3-7.Do not removesidemulchingplug at anytime,
evenwhenyou are not mulching.

mower
w thout
the
mulching plug, the
grass catcher, or
the discharge chute
properly insialledl

WARNING: Neveroperate mowerunless the
hookson the grass catcherare firmly seated
on the pivot rod and the rear discharge door rests
firmly against top of the grass catcher.

Adjustments
An adjustingplateand thumb leverat each wheel
providescuttingheightadjustment.
1. Depresslevertowardswheel.
2. Moveitto anyone of the positionsfordesiredcutting
height, Figure3-8. Makesurethat eachwheelis
positionedat the sameheight.

Figure3-6:Attachthe grasscatcher.

3. Releaselevertowardsmowerdeck.
f

CUTTING HEIGHT
_Jl
wheelsmustbe
positioned
atthesame
height,

/
\\

/
J

Figure3-7:Liftmulchplugandinstallsidedischarge
chute.

Figure3-8: Useadjustmentleversto changeheight.

Know Your Lawn Mower
_=======
Blade Control

RecoilStarter======_
_

i_iii_iI_ iiiiii_ii__ i_: i_

GrassCatcher======_

CuttingHeightAdjustment
Levers(front and rear,for
eachwheel)

l
i The bladecontrolis a
Mulch Plug

i safetydevice.DO NOT
i bypass its operations.

Side DischargeChute

i Use extremecarewhen
handling gasoline.
Gasolineis extremely
flammable and the vapors
i are explosive.Neverfuel
the machineindoorsor
i while the engineis hot
or running.Extinguish
c=garettes,c=gars,p=pes
i and othersources of
i ignition,
i Keep hands and feet
away from the chutearea

Figure4-1:The maincomponentson the mower.(Model435Ashown)

Now thatyou havesetupyour lawnmower,its importantto becomeaquaintedwith its controlsand features.

Blade Control

Recoil

Theblade controlis attachedto the upperhandleof
the mower.Depressand squeezeit againstthe upper
handleto operatethe unit. Releaseit to stop engineand
blade.

The recoilstarteris attachedto the rightupper handle.
Standbehindthe unitand pullthe recoilstarterropeto
startthe unit.

Starter

Gas and Oil Fill-Up
Refer to the enginemanual for instructions.

,_b

WARNING:This
bladecontrolis
device. Never attempt
to bypass a
itssafety
operations.

1. Checkoil leveland add oil if necessary.Followengine
manualfor this.

il on cuttingdeck. Referto
warninglabelon the unit.

Cutting

Height

Adjustment

2. Servicethe enginewith gasolineas instructedin the
enginemanual.

Levers

One adjustmentleveris locatedat eachwheeland is
usedto adjustthe cuttingheight.All fourwheelsmust
be positionedat the sameheightto ensurea uniform
cut.

Mulch

care
handling
WARNING: Useextreme
when
gasoline. Gasoline is extremely flammable
and the vapors are explosive. Never fuel the machine
indoorsor while the engine is hot or running. Extinguish cigarettes, cigars, pipes and other sources of
ignition.

,_i

Plug

Themulch plug is usedonly for mulchingpurposes.
Insteadof collectingthe grassclippings ina grass
catcher,some mowermodelshavethe optionof
recirculatingthe clippingsback to the lawn.This is
calledmulching.

Starting

Engine

WARNING:Be sure no one otherthan the
operatorisstandingnear the lawn mower
whilestartingengineor operating mower.Never
run engineindoorsor in enclosed,poorly ventilated
areas. Engine exhaustcontainscarbon monoxide, an
odorlessand deadly gas. Keep hands,feet, hair and
looseclothing awayfrom any movingpartson engine
and lawn mower.
Follow the set of instructionspertainingto your unit.
Refer to engine manual for help with the engine.

Starting

the 435 Mower:

1. Pushprimerthreetimes.Wait abouttwo seconds
betweeneachpush, Figure4-2. In temperature
around550F or below,primefive times.Do not prime
to restarta warm engine.

Figure4-2:Startingthe435Amower.

2. Standingbehindthe mower,squeezethe bladecontrol
againstupper handle,Figure4-2.

3. Holdingthesetwo handlestogetherfirmly,grasp recoil
starterhandleand pull ropeout with a rapid,continuous, full arm stroke,Figure4-2. Keepinga firm grip on
the starterhandle,letthe roperewindslowly.Repeat
until enginecranks.Letthe rope rewindeachtime
slowly.

Starting

WARNING
Theoperationof any lawn
mower can result in foreign
objectsbeing thrown into
the eyes,whichcan damage
your eyes severely. Always
wearsafety glasseswhile
operating the mower or
whileperformingany
adjustments or repairson it

the 439 Mower:

1. Placethe fuel valveleverfoundon the left sideof the
engine intothe ON (OPEN)position,Figure4-3.
2. Movethechoke leverall the way backwardintothe
choke position.
3. Standingbehindthe mower,squeezethe bladecontrol
againstupper handle,Figure4-3.The chokewill now
begin to slowlyreturnto the off chokepositionafter
activatingthe bladecontrol.Therefore,quicklymove
onto stepfour below.

Be sure no one otherthan
\
Figure4-3:Startingthe 439Qmower.

4. Holdingthesetwo handlestogetherfirmly,grasp recoil
starterhandleand pull ropeout with a rapid,continuous, full arm stroke,Figure4-3. Keepinga firm grip on
the starterhandlelet the rope rewindslowly.Repeat
until enginecranks.Letthe rope rewindeachtime
slowly.

ARNING:if you strikea foreign object,
stopthe engine.Removewire from the spark
plug,thoroughly inspectmower for any damage,
and repair damage before restarting and operating.
Extensive vibration of mower during operation is an
indicationof damage. The unit should be promptly
inspectedand repaired.

WARNING:Wait for the blade to stop completelybefore peformingany work on the
mower or to removethe grass catcher.

Stopping

Using

Engine

1. Releasebladecontrol to stop theengineand blade.
2. Disconnectsparkplug wirefrom spark plug and
groundagainstthe engine.

UsingYour

as Mulcher

Formulchinggrass,removethe grasscatcherand side
dischargechutefrom the mower.Foreffectivemulching,
do notcut wet grass.If the grass hasbeen allowedto
growin excessof fourinches,mulchingisnot recommended.Usethe grass catcherto bag clippingsinstead.

Lawn Mower

Be surelawnisclearof stones,sticks,wire,or other
objectswhich coulddamagelawnmoweror engine.
Such objectscouldbe accidentlythrownby the mower
in anydirectionand cause seriouspersonalinjuryto the
operatorand others.

Using

Grass Catcher

Youcan usethe grass catcherto collectclippingswhile
youare operatingthe mower.Referto setup sectionfor
instructionson attachingthe grasscatcher.

the operatoris standing
near the Jawnmower while
starting engine or operatinc
mower.Never run engine
indoorsor in enclosed,
poorlyventilated areas.
Engine exhaust contains
carbon monoxide, an
odorless and deadlygas.
Keep hands, feet, hair and
loose clothingaway from
any moving partson engine
and lawn mower.
Never operateyourmower
without either the rear door
or the entire grass catcher
assembly firmly secured.

Deck Care
Cleanundersideof the mowerdeck after eachuse to
preventbuild-upof grass clippingsor otherdebris.
1. Disconnectsparkplug wire. Draingasolinefrom lawn
mower,or placea pieceof plasticunderthe gas cap.
2. Tip mowersothat it restson the housing.Keepthe
sidewith the air cleanerfacingup. Hold mowerfirmly.
_

ARNING:Nevertip the mowermorethan 90°
in any direction and do not leave the mower
tipped for any length of time. Oil can drain intothe
upper partof the enginecausinga startingproblem.
3. Scrapeand clean the undersideof the deck with a
suitabletool. Do notspraywith water.
4. Putthe mowerback on itswheelson the ground.If
youhad put plasticunderthe gas capearlier,make
sureto removeit now.

Figure5-1:Areas of lubrication(model435 shown)

General

Alwaysobservesafetyruleswhen performing
anymaintenance.

Thewarrantyon this lawnmowerdoesnot cover
itemsthat havebeen subjectedto operatorabuse
or negligence.To receivefull valuefromwarranty,
operatormustmaintainthelawn moweras
instructedhere.

disconnect spark plug,
and groundagainstengine
before performinganytype
of maintenance on your
machine.

2. Serviceair cleanerevery25 hoursundernormal
conditions.Cleaneveryfew hoursunderextremely
dustyconditions.Poor engineperformanceand
floodingusuallyindicatesthat the air cleanershould
be serviced.Toservicethe air cleaner,referto the
enginemanual.

•

Changingof engine-governedspeedwill void
enginewarranty.

•

All adjustmentsshouldbe checkedat leastonce
eachseason.

•

Periodicallycheckall fastenersand makesurethese
are tight.

3. Cleansparkplug and resetthegap once a season.
Sparkplug replacementis recommendedat the start
of eachmowingseason.Checkenginemanualfor
correctplugtype and gap specifications.
4. Cleanengineregularlywith a cloth or brush. Keepthe
coolingsystem(blowerhousingarea) cleanto permit
properair circulation.Removeall grass,dirt and
combustibledebrisfrom mufflerarea.

_IIL

ARNING:Alwaysstop engine,disconnect
sparkplug,and groundagainst engine
before performingany type of maintenance on your
machine.

Lubrication
•

Lubricatepivot pointson theblade controlat least
oncea seasonwith lightoil. The bladecontrol must
operatefreely inboth directions,Figure5-1.

•

Lubricatethe wheelsat least oncea seasonwith

Do not use a pressure

washer
orgarden
hose
to
clean your unit. Thesemay

lightoil (or motoroil). If wheelsare removedfor any
reason,lubricatesurfaceof the pivotarm and inner
surfaceof thewheelwith light oil, Figure5-1.

causedamageto electdc
CompOnents,
spindles;
pulleys, bearings, or the
enginel The useof water

Care

A list of key enginemaintenancejobsrequiredfor good
performanceby the moweris given below.Followthe
accompanyingengine manualfor a detailedlist and
instructions.
1. Maintainoil levelas instructed
in enginemanual.

Recommendations

Engine

•

Lubricatethe torsionspringand pivot pointon the
rear dischargedoor and side mulchplug periodically
with lightoil to preventrust,Figure5-1.

•

Followtheaccompanyingengine manualfor lubrication scheduleand instruction
for engine lubrication.

Blade Care

,_IL

WARNING:When removingthe cutting blade
for sharpeningor replacement, protectyour
handswith a pairof heavygloves or use a heavyrag
to hold the blade.

Periodicallyinspectthe bladeadapterfor cracks,
especiallyif youstrikea foreignobject. Replacewhen
necessary.Followthe stepsbelowfor blade service.
1. Disconnectsparkplug wirefrom spark plug.Turn
moweron itsside makingsurethat the air filter and
the carburetorare up.

Maintaining

You

2. Removethe boltand the bladebell supportwhich
hold the bladeand the bladeadapterto the engine
crankshaft,Figure5-2.
3. Removebladeand adapterfromthe crankshaft,
Figure5-2.
4. The bladecan be sharpenedwith a fileor on a grindingwheel.Do notattemptto sharpenthe blade while
it isstill on the mower.Whensharpeningthe blade,
followthe originalangle of grind.Grind eachcutting
edge equallyto keepthe bladebalanced.

Figure5-2:Remove
thebolt,support,andadaptertoaccess
theblade.

WARNING

5. Removebladefrom the adapterfor testingbalance.
Balancethe bladeon a roundshaftscrewdriverto
When removing the cutting
blade for sharpening or
replacement, protectyour
hands with a pairof heavy
glovesor use a heavy rag
to hold the blade,

check. Removemetalfrom the heavysideuntil it
balancesevenly.
_iL

ARNING:An unbalanced blade will cause
excessivevibrationwhen rotating at high
speeds,it may causedamageto mower and could
break causingpersonal injury.
6. Lubricatetheenginecrankshaftand the inner surface
of the blade adapterwith lightoil. Slide the blade
adapteronto the enginecrankshaft.
7. Placethe bladeon the adaptersuch that the side
of the blade marked"Bottom"(or with part number)
facesthe groundwhenthe mowerisin theoperating
position.Makesurethat the blade isalignedand
seatedon the bladeadapterflanges.
8. Placeblade bell supporton the blade.Align notches
on the bladebell supportwith smallholesin blade.
9. Replacehex boltand tightenhex boltto torque:450
in.Ibs. rain.,600 in.Ibs.max.
Toensuresafe operationof yourmower,periodically
checkthe blade boltfor correcttorque.

Replacing

Rear Flap

1. To removerear flap, cut off theflat end of the wirerod
which securesitto thedeck, Figure5-3.
2. Attachthe newflap and new rodto deck,bendingthe
ends of the newrod overto secureto deck.

An unbalanced bladewill
causeexcessive vibration

Figure5-3:Cutwire to removerearflap.

Off-Season

Storage

Thefollowingstepsshouldbe takento prepareyour
lawnmowerfor storage.
* Cleanand lubricatemowerthoroughlyas described
inthe lubricationinstructions.
* Do not usea pressurewasheror garden hoseto
cleanyourunit.
* Referto engine manualforcorrectengine
storageinstructions.
* Coat mower'scuttingblade with chassisgreaseto
preventrusting.
* Storemowerin a dry, cleanarea. Donot storenext
to corrosivematerials,suchas fertilizer.
Whenstoringanytype of powerequipmentin a poorly
ventilatedor metal storageshed, careshouldbe taken
to rust-prooftheequipment.Usinga lightoil or silicone,
coat theequipment,especiallycablesand all moving
parts of yourlawnmowerbeforestorage.

when rotating at high
speeds, it may cause damage to mower, and could
break causingpersonal
injury,

Problem

Cause

Engine fails to Start

ade controldisengagedl
21 spark plug Wire disconnected•
31 Fueltank empty OrStalefuel•
4. Enginenot pr reed.

5: Faultyspark pug
6.
BloCkedfuel linel
7: Engineflooded.

Enginerunserratic

1. Sparkplug wire loose.
2. Blockedfuel lineor stale fuel.
3.
4.
5.
6.

1. Adjust gapto .030-inch.
2. Referto engine manual.

Idles poorly

1. Sparkplug fouled, faulty or gaptoo wide.

1. Resetgapto .030-inchor replace
spark pug.
2. Referto engine manual•
3. Referto engine manual•

Uneven cut

2 Carburetorimproperlyadjusted
3. Dirtyair cleaner•

i_ i_ _i!: _

i ii _ii__ii_
I

1. Fillcrankcasewith proper oil.
I 2 Removebower housng and c ean
3• Referto engne manua.

1. Cuttingbladeloose or unbalanced.

1. Tighten bladeandadapter.Balance
blade.

2. Bentcutting blade.

2. See an authorizedservicedealer.

1 Wetgrass•

1. Donot mowwhen grass is wet wait

2. Excessivelyhigh grass.

until laterto cut.
2. Mowonce at a high cutting height,
then mowagainat desirecJheight or

3• Du bade.
1. Wheelsnot positionedcorrectly.
2. Dull blade.

5. Referto engine manual.
6. Referto engine manual.

1. Sparkplug gap too close.
2. Carburetoridlemixtureadjustment
improperlyset.

i ¸

1. Connect andtighten sparkplug wire.
2. Clean fuel line; fill tank withclean,
fresh gasoline.
3. Clear vent.
4. Drainfuel tank. Refillwithfresh fuel.

Occasional skips
(hesitates) at high speed

Mower will not mulch grass

i i

ingyour Lawn Mowei!I,
5, Clean, adjustgap, or replace.
6,
cieanfueliinel
7: Wait afew minutesto restart,but do
I
netprime:

1 Engineoil levellow.
2....A r fow restr cted
3. Carburetornot adjustedpropery.

Excessive Vibration
ii _ _ i _

b!adecontro!,
connect wire to spark p!ug•
Ell!tank With clean,!resh gasoline•
Primeengine as instructedin 'fOperat,

Engine overheats

_iiii _

Ventingas cap plugged.
Wateror dirt infuel system.
Dirtyair cleaner.
Carburetorout of adjustment.

Remedy

iiiii_

I
makea narrowerCuttingpath.
, 3• Sharpenor replaceblade•
1. Placeall four wheelsin same
heightposition.
2. Sharpenor replaceblade.

ii i _iI_ii

731-04204

Bail Cover

28 736-0270

Bell Washer.265x .75x .062

746-1130

ControlCable40-inch

29 710-0654A

TT SeresScrew3.8-16x 1.00

746-1137

ControlCable53-inch

30 687-02071A PivotArmAssy- RH

726-0240

CableTie

664-04027

Grass BagAssembly

31 732-04175

SpringLever

747-04080

Grass Bag Frame

32 734-04087

Wheel8 x 1.8Pin Bar

732-0700

TrailshieldWire

33 710-1652

TT Screw 1/4-20x .625

731-04998

Trailshield

34 714-0104

Int.Cotter Pin .072dia. x 1.13Ig

747-04035

Pivot Rod

35 787-01292

RearHandleBracket- RH

731-04134A Rear Door

787-01291

RearHandleBracket- LH

10 687-02069
687-02068
11 787-01279

687-02070A PivotArmAssy- LH

HeightAdj. BracketAssy- LH

36 710-0703

CarriageScrew1/4-20x .75

HeightAdj. BracketAssy- RH

37 710-04371

ScrewHL 1/4-15x 1.00

21-inchDeck

38 750-04162

Spacer

12 687-02099A Hgt. Adj.Assy- LH(7-inchWhl)

39 732-04090A TorsionSpring- RH

687-02100A Hgt. Adj.Assy- RH(7-inchWhl)

732-04089A TorsionSpring- LH

13 731-1506A

Front EndCover,21-inch

40 712-0397

14 782-5002B

Front Baffle

41 731-04150C RearBaffle

15 748-04082

Blade Adapter

42 749-0928A

LowerHandle

16 742-0741

21-inchMulchingBlade

43 710-1174

CarriageBolt5/16-18x 2.0

WingNut

44 720-04072

StarKnob

FlangeLock Nut3/8-16

45 720-0279
46 710-1205
47 749-1092A

HandleKnob
EyeBolt
UpperHandle

HeightAdjustmentPlate

48 747-1161A

BladeControl(Bail)

17 736-0524B

Bell BladeSupport

18 710-1257

Hex Bolt3/8-24 x 2.5 long

19 731-04177

Side DischargeChute

20 712-04065
21 787-01290

49 7510042823 ShoulderScrew

22 687-02076A PivotArm Assy- RH
687-02077A PivotArm Assy- LH

50 731-04525

EngineShroud

23 734-04086

Wheel7 x 1.8Pin Bar

51 17032A

ChuteDeflectorAdapter

24 738-0507B

ShoulderScrew.5 x .434

52 732-1014

TorsionSpring.290 ID x 1.68

25 732-0404

Spring Lever

53 747-0710

HingePin

26 720-0426

HeightAdjust Knob

54 987-02055

Mulch PlugAssembly

27 710-0599

TT Screw1.4-20x .50

NOTE:Mower features/components vary by model. NOTall parts listed above and pictured on the previous page are
standard equipment.

Parts List

To order replacement

parts, call
'800,.800q310

orvisit
usO.
the web at
www.mtdproducts.com

MANUFACTURER'S

LiMiTED WARRANTY

The limitedwarrantyset forth belowisgivenby MTDLLCwith respect
to newmerchandisepurchasedand usedin the UnitedStates,its
possessionsand territories.
"MTD"warrantsthis productagainstdefectsin materialand workmanshipfor a periodof two (2) years commencingon the date of original
purchaseand will, at its option,repairor replace,freeof charge,any
part foundto be defectiveinmaterialsor workmanship.This limitedwarranty shallonlyapply if this product hasbeen operatedand maintained
inaccordancewith the Operator'sManualfurnishedwith the product,
and has notbeen subjectto misuse,abuse,commercialuse, neglect,
accident,impropermaintenance,alteration,vandalism,theft, fire, water,
or damagebecauseof otherperil or naturaldisaster.Damageresulting
fromthe installationor useof any part, accessoryor attachmentnot
approvedby MTDfor use with the product(s)coveredbythis manual
willvoid yourwarrantyas to any resultingdamage.
Normalwearparts are warrantedto be free fromdefects in materialand
workmanshipfor a periodof thirty (30) days fromthe dateof purchase.
Normalwearparts include,butare notlimitedto itemssuch as: batteries,belts,blades,blade adapters,grass bags, riderdeck wheels,seats,
snowthrowerskid shoes,shaveplates,auger spiralrubberand tires.
NOW TO OBTAIN SERVICE: Warranty service is available, WITH
PROOF OF PURCHASE, through your local authorized service
dealer. To locate the dealer in your area, check your Yellow Pages,
or contact MTD LLC at RO. Box 361131,Cleveland, Ohio 441360019, or call 1-800-800-7310 or 1-330-220-4683 or log on to our
Web site at www.mtdproducts.com.
This limitedwarrantydoesnot providecoverageinthe followingcases:
a. Theengineor componentparts thereof.These itemsmaycarry a
separatemanufacturer'swarranty.Referto applicablemanufacturer's
warrantyfor termsand conditions.
b. Log splitterpumps,valves,and cylindershavea separateone year
warranty.
c. Routinemaintenanceitemssuch as lubricants,filters, blade
sharpening,tune-ups,brakeadjustments,clutchadjustments,deck
adjustments,and normaldeteriorationof the exteriorfinish due to
useor exposure.

FOR

e. MTDdoesnot extendanywarrantyfor productssoldor exported
outsideof the UnitedStates,its possessionsand territories,except
those soldthroughMTD'sauthorizedchannelsof export distribution.
f. Replacementparts that are notgenuine MTDparts.
g. Transportationchargesand servicecalls.
No impliedwarranty,includingany impliedwarrantyof merchantabilityof fitness for a particular purpose,applies after the
applicable periodof express written warranty above as to the
parts as identified.No otherexpresswarranty, whetherwritten or
oral, except as mentioned above, givenby any personor entity,
includinga dealeror retailer, with respect to any product,shall
bind MTD.Duringthe periodof the warranty,the exclusiveremedy
is repairor replacementof the productas set forth above.
The provisionsas set forth in this warrantyprovidethe sole and
exclusiveremedy arising from the sale. MTDshallnot be liable
for incidentalor consequentialloss or damage including,without
limitation, expensesincurredfor substituteor replacementlawn
careservicesor for rentalexpensesto temporarily replacea
warranted product.
Somestatesdo notallowthe exclusionor limitationof incidentalor
consequentialdamages,or limitations
on howlong an impliedwarranty
lasts,sothe aboveexclusionsor limitations
maynot applyto you.
In no event shallrecoveryof any kindbe greaterthanthe amountof the
purchasepriceof the productsold.Alterationof safety features of
the product shallvoid this warranty. Youassumethe riskand liability
for loss,damage,or injuryto you and yourpropertyand/orto others and
theirpropertyarisingout of the misuseor inabilityto usethe product.
This limitedwarrantyshallnot extendto anyoneotherthan theoriginal
purchaseror to the personfor whomitwas purchasedas a gift.
HOWSTATELAWRELATESTOTHIS WARRANTY: This limited
warrantygivesyou specificlegal rights,and youmay alsohaveother
rightswhich vary from stateto state.
IMPORTANT:OwnermustpresentOriginal Proofof Purchaseto obtain
warrantycoverage.

d. Servicecompletedby someoneotherthanan authorizedservice
dealer.

MTD LLC, P.O. BOX 361131 CLEVELAND,

OHIO 44136=0019; Phone: 1=800=800=7310, 1=330=220=4683

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MTD 11A 439Q755 User Manual LAWN MOWER Manuals And Guides 1107433L

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