Toro 74978 - Page 64

Problem
PossibleCauseCorrectiveAction
1.Theengineloadisexcessive.1.Reducethegroundspeed.
2.Theoillevelinthecrankcaseislow.2.Addoiltothecrankcase.
Theengineoverheats.
3.Thecoolingnsandairpassages
abovetheengineareplugged.
3.Removetheobstructionfromthe
coolingnsandairpassages.
1.Thetrackingneedsadjustment1.Adjustthetracking.
Themowerpullsleftorright(withlevers
fullyforward)
2.Thetirepressureindrivetiresnot
correct.
2.Adjusttirepressureinthedrivetires.
1.Thebypassvalvesisnotclosedtight.1.Tightenthebypassvalves.
2.Thepumpbeltisworn,looseorbroken.
2.Changethebelt.
3.Thepumpbeltisoffapulley.3.Changethebelt.
4.Theidlersprintisbrokenormissing.4.Replacethespring.
Themachinedoesnotdrive.
5.Thehydraulicoillevelislowortoohot.5.Addhydraulicoiltoreservoirsorletit
cooldown.
1.Thecuttingblade(s)is/arebentor
unbalanced.
1.Installnewcuttingblade(s).
2.Theblademountingboltisloose.2.Tightentheblademountingbolt.
3.Theenginemountingboltsareloose.3.Tightentheenginemountingbolts.
4.Theenginepulley,idlerpulley,orblade
pulleyisloose.
4.Tightentheappropriatepulley.
5.Theenginepulleyisdamaged.
5.ContactanAuthorizedServiceDealer.
6.Thebladespindleisbent.
6.ContactanAuthorizedServiceDealer.
Thereisabnormalvibration.
7.Themotormountislooseorworn.
7.ContactanAuthorizedServiceDealer.
1.Theblade(s)notsharp.1.Sharpentheblade(s).
2.Thecuttingblade(s)is/arebent.2.Installnewcuttingblade(s).
3.Themowerdeckisnotlevel.
3.Levelthemowerdeckfromside-to-side
andfront-to-rear.
4.Theundersideofmowerisdirty.4.Cleantheundersideofthemower.
5.Thetirepressureisnotcorrect.5.Adjustthetirepressure.
Mowingisresultinginunevencutting
height.
6.Thebladespindlebent.
6.ContactanAuthorizedServiceDealer.
1.Themowerdeckbeltisworn,looseor
broken.
1.Installanewdeckbelt.
2.Themowerdeckbeltisoffpulley.
2.Installthemowerdeckpulleyand
checktheidlerpulley,idlerarm,and
springforcorrectpositionandfunction.
3.Thepumpdrivebeltisworn,looseor
broken.
3.Checkthebelttensionorinstallanew
belt.
Thebladesdonotrotate.
4.Theidlerspringisbrokenormissing.4.Replacethespring.
1.Thefuseisblown.1.Replacethefuse.Checkcoil
resistance,batterycharge,charging
system,andwiringconnectionsand
replaceifnecessary.
2.Thereislowvoltagesupplyatthe
clutch.
2.Checkcoilresistance,battery
charge,chargingsystem,andwiring
connectionsandreplaceifnecessary.
3.Thecoilisdamaged.3.Replacetheclutch.
4.Thereisinadequatecurrentsupply.4.Repairorreplacetheclutchleadwireor
electricalsystem.Cleantheconnector
contacts.
Theclutchwillnotengage.
5.Therotor/armatureairgapistoolarge.
5.Removetheshimorreplacetheclutch.
64