Problem
PossibleCauseCorrectiveAction
1.Engineloadisexcessive.1.Reducethegroundspeed.
2.Aircleanerisdirty.
2.Cleanorreplacetheaircleaner
element.
3.Oillevelinthecrankcaseislow.
3.Addoiltothecrankcase.
4.Coolingnsandairpassagesforthe
engineareplugged.
4.Removetheobstructionsfromthe
coolingnsandairpassages.
5.Thesparkplug(s)ispitted,fouled,or
thegapisincorrect.
5.Installanew,correctlygappedspark
plug(s).
6.Ventholeinthefuelcapisclosed.6.Opentheventinthefuelcap.
7.Dirtinfuellter.7.Replacethefuellter.
8.Dirt,water,orstalefuelisinthefuel
system.
8.ContactanAuthorizedServiceDealer.
Enginelosespower
9.Thereisincorrectfuelinthefueltank.9.Drainthetankandreplacethefuelwith
thepropertype.
1.Thedrivebeltsareworn,loose,or
broken.
1.ContactanAuthorizedServiceDealer.
2.Thedrivebeltsareoffofthepulleys.2.ContactanAuthorizedServiceDealer.
Themachinedoesnotdrive.
3.Thedriveisinbypassmode.
3.T akemachineoutofbypassmode.
RefertothePushingtheMachineby
Handsection.
1.Enginemountingboltsareloose.1.Tightentheenginemountingbolts.
2.Looseenginepulley,idlerpulley,or
bladepulley.
2.Tightentheappropriatepulley.
3.Enginepulleyisdamaged.
3.ContactanAuthorizedServiceDealer.
4.Cuttingblade(s)is/arebentor
unbalanced.
4.Installnewcuttingblade(s).
5.Bladeisloose.5.Tightentheblademountingboltand
inspectthebladespringdiscwashers
fordamage(refertotheServicingthe
CuttingBladessection).
Abnormalvibration
6.Bladespindleisbent.
6.ContactanAuthorizedServiceDealer.
1.Blade(s)notsharp.1.Sharpentheblade(s).
2.Cuttingblade(s)is/arebent.2.Installnewcuttingblade(s).
3.Abladeisloose.3.Tightentheblademountingboltand
inspectthebladespringdiscwashers
fordamage(refertotheServicingthe
CuttingBladessection).
4.Mowerdeckisnotlevel.
4.Levelmowerdeckfromside-to-side
andfront-to-rear.
5.Ananti-scalpwheelisnotsetcorrectly5.Adjusttheanti-scalpwheelheight.
6.Undersideofmowerisdirty.6.Cleantheundersideofthemower.
7.Tirepressureindrivetiresnotcorrect.7.Adjusttirepressure.
Unevencuttingheight.
8.Bladespindlebent.
8.ContactanAuthorizedServiceDealer.
1.Drivebeltisworn,looseorbroken.1.Installnewdrivebelt.
2.Drivebeltisoffpulley.
2.Installdrivebeltandcheckadjusting
shaftsandbeltguidesforcorrect
position.
3.Deckbeltisworn,looseorbroken.3.Installnewdeckbelt.
4.Deckbeltisoffpulley.
4.Installdeckpulleyandchecktheidler
pulley,idlerarmandspringforcorrect
positionandfunction.
Bladesdonotrotate.
5.Themowerbeltisworn,loose,or
broken.
5.Installanewmowerbelt.
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