Toro Z Master 4000 Series - Page 28

GeneralTroubleshooting(continued)
Problem
PossibleCauseCorrectiveAction
Theengineloadisexcessive.Reducethegroundspeedorraise
height-of-cut.
Theoillevelinthecrankcaseislow.Addoiltothecrankcase.
Afuelrelatedissuehasresultedina
leancondition.
Diagnosetheoriginofthelean
condition.
Theoilcooler(ifequipped)nsare
plugged.
Cleantheoilcoolerns.
Theengineoverheats
Thecoolingnsandtheairpassages
abovetheengineareplugged.
Removetheobstructionandthoroughly
cleancoolingnsandtheairpassages.
Thetrackingneedsadjustment.Adjustthetracking.
Oneofthetransaxlesisweak.Diagnosethefailedsideandrepairas
needed.
Themowerpullstotheleftorright
(withleversfullyforward)
Thetirepressureinthedrivetiresis
notcorrect.
Adjustthetirepressureinthedrive
tires.
Thebypassrodsareinthemanual
moveposition.
Placethebypassrodsintothedrive
position.
Thedrivebeltisworn,loose,offa
pulley,orbroken.
Replacethedrivebelt.
Thetensionerspringisbrokenor
missing.
Replacethespring.
Themachinedoesnotdrive
Thehydraulicoillevelislowinthe
transaxle.
Addhydraulicoiltothetransaxle.
Thecuttingblade(s)is/arebentor
unbalanced.
Installnewcuttingblade(s).
Theblademountingboltisloose.Tightentheblademountingbolt.
Theenginemountingboltsareloose.Tightentheenginemountingbolts.
Theenginepulley,idlerpulley,orblade
pulleyisloose.
Tightentheappropriatepulley,check
tomakesureidlerspringsarenotover
stretched.
Theenginepulleyisdamaged.Replacetheenginepulley.
Thebladespindleisbent.Replacethespindle.
Themachinevibratesabnormally
Themotormountislooseorworn.
Checkthemountingbolts.
Theblade(s)arenotsharp.Sharpentheblade(s).
Thecuttingblade(s)arebent.Installnewcuttingblade(s).
Themowerdeckisnotlevel/rakeis
incorrect.
Levelthemowerdeckfromside-to-side
andfront-to-rear.
Theundersideofmowerisdirty.Cleantheundersideofthemower.
Thetirepressureisnotcorrect.Adjustthetirepressure.
Themachineproducesanuneven
cuttingheight
Thebladespindleisbent.Replacethespindle.
Troubleshooting:GeneralTroubleshooting
Page3–4
4000SeriesZMASTER®ServiceManual
3442-427RevA