Toro 74978 - Troubleshooting

Troubleshooting
Problem
PossibleCauseCorrectiveAction
1.Theengineistoohot.
1.Turnengineoffandletitcool.
2.Fualtyvalveinfueltank.2.ContactanAuthorizedServiceDealer.
3.Theaircleanerisdirty.3.Makesurethattheaircleanerand
precleanerareclean.Replaceif
necessary.
4.Thebatteryisnotcharged.
4.Chargeorreplacethebattery.
5.Theconnectionstosensorselectronic
controlunit(ECU)andfuelinjectors
arenotsecuredproperly.
5.ContactanAuthorizedServiceDealer.
6.Lowvoltagecomingfromthebattery.
6.Ensureagood12voltbatteryisbeing
usedandisfullycharged.
MalfunctionIndicatorLight(MIL)comes
on.
7.Afuseisblown.7.Checkandreplaceanyblownfuses.
1.Thebladecontrolswitch(PTO)is
engaged.
1.Movethebladecontrolswitch(PTO)
todisengaged.
2.Theparkingbrakeisnoton.
2.Settheparkingbrake.
3.Thedriveleversarenotinneutrallock
position.
3.Ensurethatthedriveleversareinthe
neutrallockposition.
4.Theoperatorisnotseated.
4.Sitontheseat.
5.Thebatteryisdead.
5.Chargethebattery.
6.Theelectricalconnectionsarecorroded
orloose.
6.Checktheelectricalconnectionsfor
goodcontact.
7.Thefuseisblown.7.Replacethefuse.
Thestarterdoesnotcrank.
8.Therelayorswitchisdefective.8.ContactanAuthorizedServiceDealer.
1.Thefueltankisempty.1.Fillthefueltank.
2.Theoillevelinthecrankcaseislow.2.Addoiltothecrankcase.
3.Thethrottleandchokearenotinthe
correctposition.
3.Besurethatthethrottlecontrolis
midwaybetweenthe“SLOW”and
“FAST”positions.
4.Thereisdirtinfuellter.4.Replacethefuellter.
5.Thereisdirt,water,orstalefuelisin
thefuelsystem.
5.ContactanAuthorizedServiceDealer.
6.Theaircleanerisdirty.
6.Cleanorreplacetheaircleaner
element.
7.Theseatswitchisnotfunctioning
properly.
7.Checktheseatswitchindicator.
Replacetheseatifneeded.
8.Theelectricalconnectionsare
corroded,looseorfaulty.
8.Checktheelectricalconnectionsfor
goodcontact.Cleantheconnector
terminalsthoroughlywithelectrical
contactcleaner,applydielectricgrease,
andreconnect.
9.Therelayorswitchisdefective.9.ContactanAuthorizedServiceDealer.
10.Thesparkplugisfaulty.10.Clean,adjust,orreplacesparkplug.
Theenginewillnotstart,startshard,or
failstokeeprunning
11.Thesparkplugwireisnotconnected.
11.Checkthesparkplugwireconnection.
1.Theengineloadisexcessive.1.Reducethegroundspeed.
2.Theaircleanerisdirty.
2.Cleantheaircleanerelement.
3.Theoillevelinthecrankcaseislow.3.Addoiltothecrankcase.
4.Thecoolingnsandairpassages
abovetheengineareplugged.
4.Removetheobstructionfromthe
coolingnsandairpassages.
5.Theventholeinthefuelcapisplugged.5.Cleanorreplacethefuelcap.
6.Thereisdirtinthefuellter.6.Replacethefuellter.
Theenginelosespower.
7.Thereisdirt,water,orstalefuelisin
thefuelsystem.
7.ContactanAuthorizedServiceDealer.
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