MTD 12AV55DQ713 User Manual LAWN MOWER Manuals And Guides 1108100L

User Manual: MTD 12AV55DQ713 12AV55DQ713 MTD LAWN MOWER - Manuals and Guides View the owners manual for your MTD LAWN MOWER #12AV55DQ713. Home:Lawn & Garden Parts:MTD Parts:MTD LAWN MOWER Manual

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Safety • Assembly • Operation • Adjustments • Maintenance

21" Self-Propelled

• Troubleshooting

• Parts Lists • Warranty

Mulching

Mower-

Model Series V550

iMPORTANT
READ SAFETY

RULES AND iNSTRUCTiONS

CAREFULLY

BEFORE

OPERATION

Warning: This unit is equippedwithan internalcombustionengineand shouldnot be usedon or nearany unimprovedforest-covered,brushcoveredor grass-coveredland unlesstheengine'sexhaustsystemis equippedwith a sparkarrestermeetingapplicablelocalor statelaws(if any).
If a sparkarresteris used,it shouldbe maintainedin effectiveworkingorder by the operator.In theState of Californiathe aboveis requiredbylaw
(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 PRODUCTS LLC, P.O. BOX 361131 CLEVELAND, OHIO 44136-0019

FORMNO. 769-02830
11/2/2006

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 ........................................................
Safe Operation Practices ...................................
Setup and Adjustment .......................................
Operating Your Lawn Mower ..............................

3
4
6
8

Maintaining Your Lawn Mower .........................
Troubleshooting ................................................
Off-Season Storage and Safety Labels ..........
Parts List ...........................................................

10
12
13
14

MTDLLCreservesthe rightto changeproductspecifications,designs,and equipmentwithoutnoticeand withoutincurring
obligation.

Finding and Recording Model Number
BEFOREASSEMBLINGYOUR NEW EQUIPMENT,
please locatethe model plateon the equipmentand
copy the information
to the sample model plate provided to the right. Youcan locatethe model plate by
standingat the operatingpositionand lookingdown
at the rear of the deck. This information
will be neces-

Model Number

Serial Number

MTD LLC

sary to use the manufacturer'sweb site, to obtain
assistancefrom the CustomerSupport Department,
or when contactingan authorizedservice dealer.

www.mtdproducts.com

PoO= BOX
361131
CLEVELAND, OH 44136
330-220-4683
800-800-7310

Customer Support
Please do NOT return the unit to the retailer from
contacting Customer

which it was purchased,
Support.

without

first

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
• Call a Customer Support Representativeat 1-800-800-7310.
• The engine manufacturer is responsiblefor 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 powerequipment, 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. Failure to 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 complywith these
instructionsmay result
i in personalinjury.When
you see this symbol.
i HEED ITS WARNING!

i Your Responsibility
Restrict the use
of this power machine
to personswho read.
i understand
and follow the warnings
and instructions
I.
=nthis 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.Shutthe engine off and waituntil the bladecomesto a
completestop beforeremovingthe grasscatcheror unclogging the chute.
The cutting bladecontinuesto rotatefora few secondsafter
the engine is shut off. Neverplace any partof the body in
the bladearea until you are surethe bladehas stopped
rotating.
20. Neveroperate mowerwithoutpropertrail shield, discharge
cover,grasscatcher,bladecontrol handle or othersafety
protectivedevices in placeand working.Neveroperate
mowerwith damagedsafetydevices.Failureto do so can
result in personalinjury.
21. Mufflerand engine becomehot andcan causea burn.Do
not touch.

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

22. Only use parts andaccessoriesmade forthis machineby
manufacturer.Failureto do so can resultin personalinjury.
23. Ifsituationsoccur whichare not coveredinthis manual,
use care and goodjudgment.Contactyour dealerfor
assistance.

Slope Operation

Practices

General Service:

Slopesare a majorfactor relatedto slip andfall accidents,which
can result insevereinjury.Operationon slopes requiresextra
caution.If youfeel uneasyon a slope,do not mowit. Foryour
safety,use the slope gaugeincludedas part of this manualto
measureslopes beforeoperatingthis uniton a slopedor hilly
area.Ifthe slope is greaterthan 15 degrees,do not mow it.

1. Neverrun an engine indoorsor in a poorlyventilatedarea.
Engineexhaustcontainscarbonmonoxide,an odorless
anddeadlygas.
2. Beforecleaning,repairing,or inspecting,makecertainthe
bladeandall movingparts havestopped.Disconnectthe
sparkplug wire andgroundagainstthe engineto prevent
unintendedstarting.
3. Checkthe bladeandengine mountingbolts atfrequent
intervalsfor propertightness.Also,visuallyinspectblade
fordamage(e.g.,bent,cracked,worn) Replacebladewith
the originalequipmentmanufacture's(O.E.M.)bladeonly,
listedin this manual."Useof partswhichdo not meetthe
originalequipmentspecificationsmay leadto improper
performanceand compromisesafety!"
4. Mowerbladesare sharp andcan cut.Wrap the bladeor
weargloves,anduse extracautionwhen servicingthem.
5. Keepall nuts,bolts, andscrewstight to be surethe equipmentis insafe workingcondition.
6. Nevertamperwithsafetydevices.Checktheir proper
operationregularly.
7. After strikinga foreignobject,stop the engine,disconnect the sparkplug wire andgroundagainstthe engine.
Thoroughlyinspectthe mowerfor any damage.Repairthe
damagebeforestartingandoperatingthe mower.
8. Neverattemptto makea wheel or cuttingheightadjustmentwhilethe engine is running.
9. Grasscatchercomponents,dischargecover,andtrail
shield aresubjectto wear anddamagewhichcould
exposemovingparts or allowobjectsto be thrown.For
safetyprotection,frequentlycheck componentsand replace immediatelywithoriginal equipmentmanufacturer's
(O.E.M.)parts only, listedin this manual."Use of parts
whichdo not meetthe originalequipmentspecifications
may lead to improperperformanceand compromise
safety!"
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.

Do:
1. Mow acrossthe face of slopes;neverupand down.Exercise
extremecautionwhen changingdirectionon slopes.
2. Watchfor holes,ruts, rocks,hidden objects,or bumps
which can causeyouto slip or trip. Tallgrasscan hide
obstacles.
3. Alwaysbe sure of yourfooting.A slip and fallcan cause
serious personalinjury.If youfeel you are losingyour
balance,releasethe bladecontrol handle immediately,and
the bladewill stop rotatingwithin3 seconds.

Do Not:
1. Do not mow near drop-offs,ditchesor embankments,you
could loseyourfooting or balance.
2. Do not mow slopes greaterthan 15degreesas shown on
the slope gauge.
3. Do not mow on wet grass. Unstablefooting could cause
slipping.

Service
Safe Handling Of Gasoline:
1. Toavoid personalinjury or propertydamageuse extreme
care in handlinggasoline. Gasolineis extremelyflammable
and the vapors are explosive.Serious personalinjury can
occur when gasolineis spilled on yourselfor your clothes,
which can ignite.Washyourskin andchangeclothes
immediately.
2. Use onlyan approvedgasolinecontainer.
3. Neverfill containersinside a vehicleor on a truck or trailer
bed witha plasticliner.Alwaysplacecontainerson the
ground awayfrom yourvehicle beforefilling.
4. Removegas-poweredequipmentfrom the truckor trailer
and refuel it on the ground. If this is not possible,then refuel
such equipmenton atrailer witha portable container,rather
than from a gasolinedispensernozzle.
5. Keepthe nozzle in contactwiththe rim of the fuel tank or
containeropeningat all times untilfueling is 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.

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
lowerhandle.Make surethat eachcarriagebolt is
seatedproperlyin the handle.
2. Locatehairpinclip in one holeon the weldpin on each
sideof lowerhandle.See Figure3-2.
a. Removehairpinclipfrom this hole.Usinga pair of
pliers,insert hairpinclip intothe other holeon the
weldpin. Repeaton otherside.

NOTE:Standbehind
themowerasifyou
weregoingtooperate
it.Yourrighthandcorresponds
totheright
sideofthemower;your
lefthandcorresponds
totheleftsideofthe
mower.

b. Inserta carriagebolt fromthe hardwarepack into
the upperhole on the handle mountingbracket.
Securewith one plasticwing nut,also included
in the hardwarepack.Repeaton other sidewith
remainingitemsfrom hardwarepack.

Figure 3=1

3. The ropeguide is attachedto the right sideof the
upperhandle.Loosenthe wingnut which securesthe
rope guide.See Figure3-3.
a. Holdthe blade controlagainstupperhandle.
b. Pull starterropeout of the engine.Releasethe
bladecontrol.
c. Slip starterrope into ropeguide.
d. Tightenwingnut.

iMPORTANT

DO NOTcrimp the
cables when lifting the
handle up. Make sure
to route the cables
insidethe lower handle.

5. An adjustingplateand thumbleverat eachwheel
positionprovidescuttingheightadjustment.
a. Depresslevertowardswheel.
b. Moveit to anyof the nine positionsfor desired
cuttingheight.See Figure3-5.
c. Releaselevertowardsmowerdeck.

Figure 3=2

iMPORTANT
This unit is shipped
i without gasoline or
oil in the engine. Fill
up gasolineand oil
as instructed in the

Insertpost on cable ties intoholes providedon the
lowerhandle.Pull cabletie tight and trim excess.

accompanying engine
manual BEFORE
operating your mower.

Figure 3=3

Figure 3=4

6. Followstepsbelowto assemblethe grasscatcher:
a. Placebag overframe sothat its black plasticside
is at the bottom.
b. Slip plasticchannelof grass bagoverhooks on
the frame.See Figure3-6. All the plasticchannels
exceptcentertop of bag attachfrom outsideof
bag.

setupand

c. Attachcentertop of bag from insideof bag.
7. Followstepsbelowto attachgrass catcher:
a. Lift rear dischargedoor.
b. Placegrass catcheron thepivot rod. Letgo
of dischargedoor sothat it restson thegrass
catcher.See Figure3-7.
To removegrass catcheror convertto a mulcher(if
equipped),lift rear dischargedoor on the moweras
shown in Figure3-7.Liftgrass catcherup and out of the
pivot rod. Releasereardischargedoor to allowit to close
rearopeningof mower.

cuTnNG
HEIGHT

Figure 3=5

All Wheelsmust be
plaCed in the same
relative positionl

8. The adjustmentwheelis locatedin the drivecontrol
handle housingand is usedto tightenor loosenthe
drive belt.You will needto adjust thedrivecontrol if
the mowerdoesnot propelitselfwith thedrive control
engagedor if the mower'swheelshesitatewith the
drivecontrolengaged.If eitherof these conditions
occur,rotateadjustmentwheelclockwiseto tighten
cable or counterclockwiseto loosenthe cable. See

GRASS CATCHER
Makecertain bag is
turned right side out
before assembling
(warning label Willbe
on the outside)i

Figure3-8.

unless the hooks
the grass
WARNING:
Neveron
operate
mower
catcher are firmly seated on the
pivot rod, and the rear discharge door rests
firmly against top of the grass catcher.
,L_hlL

J
Figure 3-6

Never operate mower
the hooks on
the grass catcher are
firmly seated on the
pivot rod, and the
rear discharge door
rests firmly against
top of the grass
Catcherl

Figure 3-8

Figure 3-7

Know Your Lawn Mower
Drive Control
X,

._---

Blade Control

Recoil
Starter

WARNING
Cutting Height
AdjustmentLevers

The blade control
mechanism is a
safety device. Never
attempt to bypass its
operations.
;

Use extreme 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.
I Extinguish cigarettes,
cigars, pipes and
other sources of
ignition.
Keep hands and feet
away from the chute
area on cutting deck.
Refer to warning
label on the unit.

Figure 4-1
Now thatyou haveset up your lawnmowerfor operation, get aquaintedwith its controlsand features.These
are describedbelowand illustratedon this page.This
knowledgewill allowyou to use yournewequipmentto
its fullestpotential.

Cutting

Height

Adjustment

Levers

One adjustmentleveris locatedon eachwheeland is
usedto adjustthe cuttingheight.All fourlevershaveto
be at the same relativepositionto ensurea uniformcut.

Recoil
Blade Control

Starter

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

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

Gas and Oil Fill-Up
1. Checkoil leveland add oil if necessary.Followengine
manualfor this.

2. Servicethe enginewith gasolineas instructedin the
enginemanual. See Enginemanualfor locationof oil
and gas fill.

nism is a safetydevice. Never attempt
WARNING:Thisblade control mechato bypass its operations.

Drive Control
Thedrivecontrol is locatedon the undersideof the

upperhandleand is usedto engagethe drive.Squeeze
it againstthe upper handleto engagethedrive; release
it to slow downor stop mowerfrom propelling.See
Figure4-1.

dling gasoline.Gasoline is extremely
WARNING: Useextremecare when hanflammable and the vapors are explosive.
Never fuel the machine indoorsor while

the engine is hot or running.Extinguish cigarettes,
cigars, pipesand other sources of ignition.
mower can result in foreign objects
WARNING:The
operation
of any lawn
being thrown intothe
eyes,which
can
damage your eyes severely. Always
wear safety glasses while operating the mower, or
while performingany adjustments or repairson it.
,_

Starting

Engine

the operatoris standingnear the lawn
ARNING:Be sure no one otherthan
mower whilestarting engineor operating mower.Neverrun engineindoorsor
in enclosed,poorly ventilatedareas. Engine exhaust
contains carbon monoxide, an odorlessand deadly
gas. Keephands,feet, hairand looseclothing away
from any moving parts on engine and lawn mower.
__k

perating

Followthe set of instructionspertainingto your unit.
Refer to enginemanual for helpwith the engine.

MoWer

Honda Engine:
1. Placethe fuel valvelever(if equipped)foundon the
left sideof theengine intothe ON(OPEN)position.
2. Movethechoke lever(if equipped)all the way
backwardintothe choke position.See Figure4-2.

Figure 4=2

3. Standingbehindthe mower,squeezethe bladecontrol
againstupper handleas shownin Figure4-2. The
chokewill nowbeginto slowlyreturnto the off choke
positionafter activatingthe blade control.Therefore,
quicklymoveonto stepfour below.
4. Holdingthesetwo handlestogetherfirmly,grasp recoil
starterhandleand pull ropeout with a rapid,continuous, full arm stroke.Keepinga firm grip on the starter
handle letthe roperewindslowly.Repeatuntil engine
cranks. Letthe rope rewindeachtime slowly.

Briggs

& Stratton/Tecumseh

Engine:

1. ifequipped,pushprimerthreetimes.Wait about
two secondsbetweeneach push.See Figure4-3. In
temperaturearound550F or below,primefive times.
Donot primeto restarta warmengine.
,,\

2. Standingbehindthe mower,squeezethe bladecontrol
againstupper handleas shownin Figure4-3.

Figure 4-3

3. Holdingthesetwo handlestogetherfirmly,grasp recoil
starterhandleand pull ropeout with a rapid,continuobject, stop the engine.Remove
ous, full arm stroke.Keepinga firm grip on the starter _
ARNING:If you strike a foreign
wire from the spark plug,thoroughly
handle,let the rope rewindslowly.Repeatuntil engine
respect mower for any damage, and
cranks. Letthe rope rewindeachtime slowly.
repairdamage before restarting and operating.
Extensive vibration of mower during operation is an
completelybeforeperforming any work
indicationof damage. The unit should be promptly
_
the bladeto
stop
onARNING:Wait
the mower or for
to remove
the grass
inspectedand repaired.
catcher.

Using
Stopping

Engine

Formulchinggrass,removethe grasscatcherfrom the
mower.Foreffectivemulching,do notcut wet grass.If
the grasshas beenallowedto growin excessof four
inches,mulchingis not recommended.Usethe grass
catcherto bag clippingsinstead.

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

UsingYour

as Mulcher

Lawn Mower

Using

Be surelawnis clearof stones,sticks,wire,or other
objectswhich coulddamagelawnmoweror engine.
Such objectscouldbe accidentlythrownby the mower

Grass Catcher

Youcan usethe grass catcherto collectclippings
whileyouare operatingthe mower.Referto Setupand
Adjustmentsectionfor instructionson attachingthe
grasscatcher.

in anydirectionand cause seriouspersonalinjuryto the
operatorand others.

The operation of any
lawn mower can result
in foreign objects
being thrown into
the eyes, which can
damage your eyes
severely. Always wear
safety glasses while
operatingthe mower,
or while performing
any adjustments or
repairs on it.
Be sure no one other
than the operator is
standing near the lawn
mower while starting
engine or operating
mower. Never run
engine indoors or
in enclosed, poorly
ventilated areas. Engine exhaust contains
carbon monoxide, an
odorless and deadly
;tas. Keep hands, feet,
lair and loose clothing
_way from any moving
parts on engine and
lawn mower.

Lubrication
1. Lubricatepivot pointson theblade controlat least
oncea seasonwith lightoil. The bladecontrol must
operatefreely in both directions.See Figure5-1.
2. Lubricatethe wheelsat least oncea seasonwith
lightoil (or motoroil). If wheelsare removedfor any
reason,lubricatesurfaceof the pivotarm and inner
surfaceof thewheelwith lightoil. See Figure5-1.
3. Lubricatethe torsionspringand pivot pointon the rear
dischargedoor periodicallywith lightoil to prevent
rust.See Figure5-1.

Your Lawn

4. Thetransmissionis pre-lubricatedand sealedat the
factoryand does not requirelubrication.
5. Followtheaccompanyingengine manualfor lubrication scheduleand instruction
for engine lubrication.

Deck Care
Figure 5-1

Theundersideof the mowerdeck shouldbe cleaned
after eachuseto preventany build-upof grass clippings,
leaves,dirt, or otherdebris. If this debrisis allowedto
accumulate,it will resultin rust and corrosion.
1. Disconnectsparkplug wire. Draingasolinefrom lawn
mower,or placea pieceof plasticunderthe gas cap.

WARNING

2. Tip mowersothat itrestson the housing.Keepthe
sidewith the air cleanerfacingup. Hold mowerfirmly.

A vays
stop
eng,"e;
disconnect
spark

than 90 degreesin any directionsand
WARNING:Nevertip
the mowermore
do not leavethe mowertipped
for any
lengthof time. Oil can draininto the
upper partof the enginecausinga startingproblem.
3. Scrapeand cleanthe undersideof the deck with a
suitabletool. Do notspraywith water.
_L

plug, and ground
against engine before
cleaning, lubricating

maintenance onyour

4. Putthe mowerback on itswheelson the ground.If
youhad putplasticunderthe gas capearlier,make
sureto removeit now.
Figure 5=2

General

Engine Care

Recommendations

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

1. Alwaysobservesafetyruleswhen performing
anymaintenance.

We do not recommend
the use of pressure
washers or garden
hose to clean your
unitl These may cause
damage to electric
compOnentsi SpindleS;
pulleys, bea i'ings, or
the eng ne: The use
of WaterWillresult in
shortened lifeand
i reduceserViceabilityl

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

2. Serviceair cleanerevery25 hoursundernormal
conditions.Cleaneveryfew hoursunderextremely
dustyconditions.Referto engine manual.
3. Cleansparkplug and resetthegap once a season.
Checkenginemanualfor correctplugtype and gap
specifications.

3. Changingof engine-governedspeedwill void
enginewarranty.
4. All adjustmentsshouldbe checkedat leastonce
eachseason.
5. Periodicallycheckall fastenersand makesurethese
are tight.

disconnect spark plug,and ground
WARNING:Alwaysstopengine,
against engine before cleaning,
lubricating or doing any kindof
maintenanceon your machine.

4. Cleanengineregularlywith a cloth or brush. Keepthe
coolingsystem(blowerhousingarea) cleanto permit
properair circulation.Removeall grass,dirt and
combustibledebrisfrom mufflerarea.

Replacing

Rear Flap

1. Toremoverearflap, lift rear door,and pressflap in on
eithersideto removefrom hole.See Figure5-2.
2. Removeflapfrom oppositeholeand replacewith new
flap in the oppositeorderand mannerof removal.

Blade Care

WARNING:Whenremovingcutting
blade for sharpeningor replacement,
protectyourhandswith a pairof heavy
glovesor usea heavyrag to hold blade.
1. Disconnectsparkplug wirefrom spark plug.Turn
moweron its side makingsurethat the air filter and
the carburetorare up.
2. Removebolt, bell washer,blade,and bladeadapter
from the enginecrankshaft.See Figure5-3.

NOTE:When removingthese items,the pulleysand
washersmayalso breakfree fromthe crankshaft.Be
sureto makenoteof the orientationof these itemsfor
reassembly.

Figure 5-3

3. The bladecan be sharpenedwith a fileor on a grinding wheel.Do notattemptto sharpenthe blade while
it is still on the mower.Whensharpeningblade,follow
originalangle of grind.Grind cuttingedgesequallyto
keep bladebalanced.

WARNING

4. Removebladefrom the adapterfor testingbalance.
Balancethe bladeon a roundshaftscrewdriverto
check. Removemetalfrom the heavysideuntil it
balancesevenly.

__IL

causeexcessive vibrationwhen rotating
WARNING:An
unbalanced
bladewill
at
highspeeds.It
maycausedamage
to mower, and couldbreak causing
personalinjury.

Lubricatetheenginecrankshaftand the inner surface
of the blade adapterwith lightoil. Slide the blade
adapteronto the enginecrankshaft.Placethe blade
on theadaptersuch that the sideof the blade marked
"Bottom"(or with part number)facesthe groundwhen
the mowerisin the operatingposition.Makesurethat
blade is alignedand seatedon bladeadapterflanges.

Figure 5-4
f

When removing
the cutting blade
for sharpening or
replacement or
when sliding the belt
around it, protect
your hands with a
pair of heavy gloves
or use a heavy rag to
hold the blade.
An unbalanced blade
will cause excessive

6. Placebell washeron the blade.Align notcheson the
blade bell supportwith small holesin blade.Replace
hex boltand tighten hexbolt to torque:450 in.Ibs.
rain.,600 in.Ibs.max.

vibration when rotating at high speeds. It
may cause damage
to mower, and could
break causing personal injury.

Toensuresafe operationof yourmower,periodically
checkthe blade boltfor correcttorque.

Belt Care
1. Removetwo shoulderscrewssecuringfrontdrive
Figure 5-5
cover to mowerdeck.See Figure5-4. Pressinwardon
sides of front drivecoverand releasetabs that secure
Thenremovethe belt from aroundthe bladeby
it to the heightadjusterbrackets.Removedrivecover
removingoverone end at a time.See Figure5-5.
from mower.
4. Replacewith newbelt, workingaround bladeand
2. Pull up on the belt keeperwireand pivotit out away
up throughthe beltkeeperbracket.Makesurebelt
from the drivepulley.See Figure5-4 inset.
is firmlyseatedon engine pulleywhile pullingfrom
3. Rollthe beltoff the transmissionpulley.Tip mower
the othersideand slidingit aroundthe transmison its sidewith the air filter up to access beltfrom
sion pulley.Pivotthe belt keeperwire backinto its
undersideof mower.Slide beltoff of enginepulleyand
operatingpostionand snapintothe slot provided.
threadthroughthe openingin the beltkeeperbracket.
Reassemblefront drivecover.

Problem

Cause

Ena ne fa sto start

Remedy

1. Bladecontroldisengaged,

sParkPiugwiie disconnected:
3.

"
...........

Fueltank empty or stale fuel.
4. Enginenot piimed(if equippedwth
primer)i
Faultyspark p ugl
61 BloCked fuel linel
7: Engineflooded.

& Filltank with clean,fresh gasolinel
4. prime engineaS instr,u,
cted in Operat,
ing Your Lawn Mower.
c ean adjustgap or repiacel
clean fuellinel
7. Wait a few minutesto restait,but do
I
notprimel
8. Fue!valve(if equipped)closed,
& Open fuel va!ve: See enginemanuaI.
91 Enginenot choked (if equippedw/choke).
9. Choke engine:Seeengine manual.
1. Sparkplug wire loose.
2. Blockedfuel lineor stale fuel.

Engineruns erratic

3.
4.
5.
6.

Eng ne overheats

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

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

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

1. Engineoil levellow.
2. Air flow restricted.

1. Fillcrankcasewith proper oil.
2. Removeblowerhousing
and c ean.
3. Referto engine manual.

3. Carburetornot adjustedproperly.
I

Occasional skips
(hesitates) at
high speed

2. Referto engine manual.

1. Sparkplug fouled, faulty or gap

too wide.
I

Excessive
Vibration

1. Resetgapto .030"or replace
_

2. Referto engine manual.
3. Referto engine manual.

1. Cuttingbladeloose or unbalanced.

1. Tighten bladeandadapter.Balance

2. Bentcutting blade.

2. See an authorizedservicedealer.

1. Wetgrass.

1. Donot mowwhen grass Lswet; walt
untillater to cut.
2. Mowonce at a high cutting height
then mowagainat desiredheight 'or
makea narrowercutting path.

3. Sharpenor replaceblade.

I
2 Excessve y h gh grass

_-qulppea_
I

Unevencut

Mower will not
seIf propeI

spark plug.

2. Carburetorimproperlyadjusted.
3 Dirtyair cleaner.

blade.

Mower will not
mulch clrass/If
,_"

1. Adjustgap to .030".

2. Carburetoridlemixtureadjustment

improperly
set.

Idles poorly
-

1. Sparkplug gap too close.

3. Dullblade.

1. Wheelsnot positionedcorrectly.

2. Dull blade.

1. Placeall four wheelsin same
heightposition.
2. Sharpenor replaceblade.

1. Belt not insialled properly.

1. Check belt for proper pulleyinstallation

2. Debrs clogg ng driveoperation

and movement.
2. Stop engine,disconnectsparkplug
wire and clean out debris.

3. Damagedor wornbelt.

3. Inspectand replacebelt.
M

For repairsbeyond
minor adjustments
listed here, contact
an authorized service
dealer.

Engagebladecontro!.
conneO!wiretOspark plugl

S".............
Off=Season
Storage
The followingstepsshouldbe taken to prepareyour lawn
mowerfor storage.
1. Cleanand lubricatemowerthoroughlyas describedin
the lubricationinstructions.
2. We do not recommendthe useof a pressurewasher
or gardenhoseto cleanyour unit.
3. Referto enginemanualfor correctengine
storageinstructions.

4. Coat mower'scuttingblade with chassisgreaseto
preventrusting.
5. 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.

Safety Labels Found On Your Lawn Mower

WARNING
DO NOT remove safety
(or any) labels from
mower for any reason.

Model Series V550

)

Fief.
No.

Part No.

Description

Fief.
No.

PartNo.

Description

731-2626

Bail Cover

782-7551A

WheelCover

747-1161A

Blade Control

717-1762

SpurGear14T RH

746-0957

ControlCable37.25-inch

717-1761

SpurGear 14TLH

726-0240

CableTie

710-04531

Screw1/4-20x.39

664-04065

Grass BagAssembly

734-2042

FrontWheel8 x 2.125Zag

747-04080

Grass Bag Frame

731-0981A

Hubcap

746-04206A VariableSpeedCable

710-0216

Screw3/8-16x .75

731-05642

Trailshield

720-0426

Knob

731-05865

Rear Door

736-0447

WaveWasher 1.5x 1 x .029

10 687-02280

HeightAdj. BracketAssy- LH

710-1008

ScrewTT 3/8-16x 1.875

687-02279

HeightAdj. BracketAssy- RH

712-04065

FlangeLockNut 3/8-16

787-01537

21-inchDeck

782-5004B

RearRH Baffle

732-04317

ExtensionSpring

710-1652

ScrewTT 1/4-20x .625

Front HeightAdj. Assy- LH

720-0312

FoamGrip

687-02194

Front HeightAdj. Assy- RH

738o0507B ShoulderScrew

750-04405

SleeveSpacer.52 ID x 1.8Lg

734-04093

RearWheel12x 2.125IdleZag

715-0221

Dowel Pin

732-0866

SpringLever

687o02039A PivotArmAssemblyRH

13 687-02193

16 618-04377A Transmission
17

710-1650

ShoulderScrew

731o05013A DeckCover

753-05096A SpeedControlAssembly

782-5002B

714-0104

HairpinClip

750-04164A Spacer

749-04206

UpperHandle

754-04082A V-TypeBelt

710-0703

Screw1/4-20x .75

SNUIN£
_FACTORYPARTS

parts, Call
1'800,800.7310
or visit us on
the web

,ww:mtdp,od,,ots:

687o02040A PivotArmAssemblyLH

Front Baffle

787o01258A CableMount Bracket

631-0075B

748-04082

BladeAdapter

732-04090A TorsionSpringRH

742-0741

21-inchMulchingBlade

710-1205

EyeBolt

747°04588

PivotRod

EngineSpacer

736-0452

Bell Washer,.396x 1.140x .095

710-1257

Sc_w3/8-24 x2.5

782-5003A

RearBaffle LH

736-0277

Fiat Washer,1.031x 1.620x .095

710-1017

ScrewAB 1/4-14x .625

756-04160

Key Half Pulley

712-0397

WingNut

756-04161

UpperHalf Pulley

749-0928A

LowerHandle

750-04404

SleeveSpacer,.52 Lg x 9.10

710-1174

CarriageBolt5/16-18x 2

682-0015

Front BearingAssembly

720-04072

Star Knob

787-01298

AdjustmentPlateRH

720-0279

HandleKnob

787-01299

AdjustmentPlateLH

710-04329

TorxScrew

687-02044

Pivot PlateAssembly

710-0896

Screw,1/4-14x .625

732-0706

Spring LeverRH

732-04294

Belt KeeperWire

732-0707

Spring LeverLH

750-04020

Spacer,1.004x 1.375x .25

736-0474

Flat Washer1.01x 1.5x .035

736-0182

SpringWasher,.500x 1.00x .022

716-0102

Snap Ring

ii i _iI_ ii

IMPORTANT
For a properworking
machine, use Factory
Approved Parts. V-BELTS
are specially designed to
engageand disengage
safely.Asubstitute
(non OEM) V-Belt can
be dangerous by not
disengaging completely.

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.
HOW 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 impliedwarranty of merchantabilityof fitness for a particular purpose,applies after the
applicable periodof express written warranty above as to the
parts as identified.No otherexpresswarranty, whetherwrittenor
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 limitationson howlong an impliedwarranty
lasts, sothe aboveexclusionsor limitationsmaynot applyto you.
In no event shallrecoveryof any kindbe greaterthanthe amountof the
purchasepriceof the productsold.Alterationof safety features of
the productshallvoid this warranty. Youassumethe risk and 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.

IViTD LLC, P.O. BOX 361131 CLEVELAND, OHiO 44136-0019;

Phone: 1=800=800-7310, 1-330=220-4683

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MTD 12AV55DQ713 User Manual LAWN MOWER Manuals And Guides 1108100L

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