Toro 74312 - Page 63

Problem
PossibleCauseCorrectiveAction
1.Theengineloadisexcessive.1.Reducethegroundspeed.
2.Theaircleanerisdirty.
2.Cleantheair-cleanerelement.
3.Theoillevelinthecrankcaseislow.3.Addoiltothecrankcase.
4.Thecoolingnsandtheairpassages
abovetheengineareplugged.
4.Removetheobstructionfromthe
coolingnsandtheairpassages.
5.Theventholeinthefuelcapisplugged.5.Cleanorreplacethefuelcap.
6.Thereisdirtinthefuellter.6.Replacethefuellter.
Theenginelosespower.
7.Thereisdirt,water,orstalefuelinthe
fuelsystem.
7.ContactanAuthorizedServiceDealer.
1.Theengineloadisexcessive.1.Reducethegroundspeed.
2.Theoillevelinthecrankcaseislow.2.Addoiltothecrankcase.
Theengineoverheats.
3.Thecoolingnsandtheairpassages
abovetheengineareplugged.
3.Removetheobstructionfromthe
coolingnsandtheairpassages.
1.Thetrackingneedsadjustment.1.Adjustthetracking.
2.Thetirepressureindrivetiresnot
correct.
2.Adjusttirepressureinthedrivetires.
Themowerpullsleftorright(withlevers
fullyforward).
3.Thereverseindicatorand
speed-controllinkageneedadjustment.
3.Adjustthereverseindicatorandthe
speed-controllinkage.
1.Thebypassvalvesarenotclosedtight.1.Tightenthebypassvalves.
2.Thepumpbeltisworn,looseorbroken.
2.Changethebelt.
3.Thepumpbeltisoffapulley.3.Changethebelt.
4.Theidlerspringisbrokenormissing.4.Replacethespring.
Themachinedoesnotdrive.
5.Thehydraulicuidlevelislowortoo
hot.
5.Addhydraulicuidtoreservoirsorletit
cooldown.
1.Thecuttingblade(s)is/arebentor
unbalanced.
1.Installnewcuttingblade(s).
2.Theblademountingboltisloose.2.Tightentheblademountingbolt.
3.Theenginemountingboltsareloose.3.Tightentheenginemountingbolts.
4.Thereisalooseenginepulley,idler
pulley,orbladepulley.
4.Tightentheappropriatepulley.
5.Theenginepulleyisdamaged.
5.ContactanAuthorizedServiceDealer.
6.Thebladespindleisbent.
6.ContactanAuthorizedServiceDealer.
Themachinevibratesabnormally.
7.Thebeltisdamaged.7.Installnewbelt.
1.Theblade(s)is/arenotsharp.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.Thetirepressureindrivetiresnot
correct.
5.Adjustthetirepressureinthedrive
tires.
6.Thespacersareinthewronglocation.6.Positionthespacersunderhairpin
cotters.
Themachineproducesanunevencutting
height.
7.Thetipsofadjacentbladesareatan
unevencuttingheight.Bladestips
shouldbeevenwithin3/16inchwhich
isapproximatelyonebladethickness.
7.Replaceblades,spindlesand(or)
checkfordamagetomowerdeck.
1.ThePTObeltisworn,loose,orbroken.1.Checkthebelttensionorreplacebelt
2.ThePTOshaftisnotconnected.2.ConnectthePTOshaft.
Thebladesdonotrotate.
3.ThePTObeltisoffthepulley.3.Checkthebeltfordamage.Installthe
beltandcheckadjustingshaftsand
beltguidesforcorrectposition.
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