Toro 74790 - Troubleshooting; Engine Issues

Troubleshooting
Problem
PossibleCauseCorrectiveAction
1.Theengineloadisexcessive.1.Reducegroundspeed.
2.Theoillevelinthecrankcaseislow.2.Addoiltothecrankcase.
3.Thecoolingnsandairpassages
undertheengineblowerhousingare
plugged.
3.Removetheobstructionfromthe
coolingnsandairpassages.
4.Theaircleanerisdirty.
4.Cleanorreplacetheair-cleaner
element.
Theengineoverheats.
5.Dirt,water,orstalefuelisinthefuel
system.
5.ContactanAuthorizedServiceDealer.
1.Theblade-controlswitchisengaged.1.Movetheblade-controlswitchtothe
disengagedposition.
2.Thebatteryisdead.
2.Chargethebattery.
3.Theelectricalconnectionsare
corrodedorloose.
3.Checktheelectricalconnectionsfor
goodcontact.
4.Afuseisblown.4.Replacethefuse.
Thestarterdoesnotcrank
5.Arelayorswitchisdamaged.
5.ContactanAuthorizedServiceDealer.
1.Thefueltankisempty.1.Fillthefueltank.
2.Thechokeisnoton.
2.MovethechokelevertoON.
3.Theaircleanerisdirty.
3.Cleanorreplacetheair-cleaner
element.
4.Thespark-plugwire(s)islooseor
disconnected.
4.Installthewire(s)onthesparkplug.
5.Thesparkplug(s)ispitted,fouled,or
thegapisincorrect.
5.Installanew,correctlygappedspark
plug(s).
6.Thereisdirtinthefuellter.6.Replacethefuellter.
7.Dirt,water,orstalefuelisinthefuel
system.
7.ContactanAuthorizedServiceDealer.
8.Thereisincorrectfuelinthefueltank.
8.Drainthetankandreplacethefuelwith
thepropertype.
Theenginedoesnotstart,startshard,or
failstokeeprunning.
9.Theoillevelinthecrankcaseislow.9.Addoiltothecrankcase.
1.Theengineloadisexcessive.1.Reducethegroundspeed.
2.Theaircleanerisdirty.
2.Cleantheair-cleanerelement.
3.Theoillevelinthecrankcaseislow.3.Addoiltothecrankcase.
4.Thecoolingnsandairpassages
undertheengineblowerhousingare
plugged.
4.Removetheobstructionfromthe
coolingnsandairpassages.
5.Thesparkplug(s)ispitted,fouled,or
thegapisincorrect.
5.Installanew,correctlygappedspark
plug(s).
6.Thefuel-tankventisblocked.6.ContactanAuthorizedServiceDealer.
7.Thereisdirtinthefuellter.7.Replacethefuellter.
8.
Dirt,water,orstalefuelisinthefuel
system.
8.ContactanAuthorizedServiceDealer.
Theenginelosespower.
9.Thereisincorrectfuelinthefueltank.
9.
Drainthetankandreplacethefuelwith
thepropertype.
1.Thebypassvalvesareopen.
1.Closethetowvalves.
2.Thetractionbeltsareworn,loose,or
broken.
2.ContactanAuthorizedServiceDealer.
3.
Thetractionbeltsareoffthepulleys.
3.
ContactanAuthorizedServiceDealer.
Themachinedoesnotdrive.
4.Thetransmissionhasfailed.4.ContactanAuthorizedServiceDealer.
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