Exmark NAVIGATOR User Manual

Troubleshooting
ProblemPossibleCauseCorrectiveAction
1.Engineloadisexcessive.1.Reducethegroundspeed.
2.Oillevelinthecrankcaseislow.
2.Addoiltothecrankcase.
Engineoverheats.
3.Coolingnsandairpassagesforthe
engineareplugged.
3.Removetheobstructionsfromthe
coolingnsandairpassages.
1.Trackingneedsadjustment.1.Adjustthetracking.
2.Tirepressureindrivetiresnotcorrect.2.Adjusttirepressureinthedrivetires.
Mowerpullsleftorright(withleversfully
forward).
3.Reverseindicatorandspeedcontrol
linkageneedadjustment.
3.Adjustthereverseindicatorandthespeed
controllinkage.
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.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.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.Spacersareinwronglocation.
6.Positionspacersunderhairpins.
Unevencuttingheight.
7.Tipsofadjacentbladesareatanuneven
cuttingheight.Bladestipsshouldbeeven
within3/16inchwhichisapproximately
onebladethickness.
7.Replaceblades,spindlesand(or)check
fordamagetomowerdeck.
1.PTObeltisworn,loose,orbroken.1.Checkbelttensionorreplacebelt
2.PTOshaftisnotconnected.
2.ConnectPTOshaft.
Bladesdonotrotate.
3.PTObeltisoffpulley.3.Checkbeltfordamage.Installbeltand
checkadjustingshaftsandbeltguidesfor
correctposition.
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Exmark NAVIGATOR Specifications

General

Drive System	Hydrostatic
Deck Construction	Fabricated
Transmission	Hydrostatic
Deck Material	Steel
Turning Radius	Zero-turn
Cutting Width	42 in
Blade Tip Speed	18, 500 fpm
Engine Type	V-Twin