Exmark LAZER Z DS-SERIES - Troubleshooting; Engine overheats; Mower pulls left or right; Machine does not drive

Troubleshooting
ProblemPossibleCauseCorrectiveAction
1.Engineloadisexcessive.1.Reducethegroundspeed.
2.Oillevelinthecrankcaseislow.
2.Addoiltothecrankcase.
3.Dirtyairlter.
3.Cleanorreplacetheaircleanerelement.
4.Coolantlevelislow.
4.Addcoolant.
5.Debrisonoraroundradiator.
5.
Removedebris(seeCleantheRadiator
sectioninMaintenance).
Engineoverheats.
6.Waterpumporalternatorbeltisworn,
loose,orbroken.
6.ContactanAuthorizedServiceDealer.
1.Trackingneedsadjustment.1.Adjustthetracking.
2.Tirepressureindrivetiresnotcorrect.2.Adjusttirepressureinthedrivetires.
Mowerpullsleftorright(withleversfully
forward)
3.Reverseindicatorandmotioncontrol
linkageneedadjustment.
3.Adjustthereverseindicatorandthe
motioncontrollinkage.
1.Bypassvalveisnotclosedtight.1.Tightenthebypassvalve.
2.Driveorpumpbeltisworn,looseor
broken.
2.Changethebelt.
3.Driveorpumpbeltisoffapulley.3.Changethebelt.
4.Brokenormissingidlerspring.
4.Replacethespring.
Machinedoesnotdrive
5.Hydraulicuidlevelislowortoohot.5.Addhydraulicuidtoreservoirorletit
cooldown.
1.Blade(s)notsharp.1.Sharpentheblade(s).
2.Cuttingblade(s)is/arebent.
2.Installnewcuttingblade(s).
3.Mowerdeckisnotlevel.3.Levelmowerdeckfromside-to-sideand
front-to-rear.
4.Undersideofmowerisdirty.4.Cleantheundersideofthemower.
5.Tirepressureindrivetiresnotcorrect.5.Adjusttirepressureinthedrivetires.
6.Bladespindlebent.6.ContactanAuthorizedServiceDealer.
Unevencuttingheight.
7.Tipsofadjacentbladesareatanuneven
cuttingheight.Bladestipsshouldbeeven
within3/16inchwhichisapproximately
onebladethickness.
7.Replaceblades,spindlesand(or)check
fordamagetomowerdeck.
1.Cuttingblade(s)is/arebentorunbalanced.
1.Installnewcuttingblade(s).
2.Blademountingboltisloose.2.Tightentheblademountingbolt.
3.Enginemountingboltsareloose.3.Tightentheenginemountingbolts.
4.Looseenginepulley,idlerpulley,orblade
pulley.
4.Tightentheappropriatepulley.
5.Enginepulleyisdamaged.5.ContactanAuthorizedServiceDealer.
6.Bladespindleisbent.6.ContactanAuthorizedServiceDealer.
Abnormalvibration
7.Beltisdamaged.7.Installnewbelt.
1.Drivebeltisworn,looseorbroken.1.Checkthebelttension.
2.Drivebeltisoffpulley.2.Checkbeltfordamage;replaceif
necessary.Installdrivebeltandcheckbelt
guideforcorrectposition.
3.Deckbeltisworn,looseorbroken.3.Installnewdeckbelt.
4.Deckbeltisoffpulley.4.Installdeckpulleyandchecktheidler
pulley,idlerarmandspringforcorrect
positionandfunction.
5.Brokenormissingidlerspring.
5.Replacethespring.
Bladesdonotrotate.
6.Clutchhasdisengaged.6.Enginehasoverheated;determinecause
ofoverheat(seeEngineoverheats).
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