Toro 74024 Service Manual

GeneralTroubleshooting
Problem
PossibleCauseCorrectiveAction
Thebladecontrolswitch(PTO)is
engaged.
Movetheblade-controlswitch(PTO)to
thedisengagedposition.
Theparkingbrakeisnotengaged.Movethemotioncontrolleverstothe
neutrallock(Park)position.
Thebatteryisdead.
Chargethebattery.
Theelectricalconnectionsarecorroded
orloose.
Checktheelectricalconnectsforgood
contact.
Aswitchiswornordamaged.
Testandreplacefaultyswitch.
Thestarterdoesnotcrank
Thefuseisblown.Replacethefuse.
Thefueltankisempty.Fillthefueltank.
Thethrottleisnotinthecorrectposition.Besurethatthethrottlecontrolis
alwaysinthefastpositions.
Thereisdirtinthefuellter.Replacethefuellter.
Thereisdirt,water,orstalefuelinthe
fuelsystem.
Cleanandushthefuelsystem.
Theaircleanerisdirty.
Cleanorreplacetheaircleaner
element.
Theseatswitchisnotfunctioning
properly.
Checktheseat-switchandreplaceif
faulty.
Theelectricalconnectionsare
corroded,loose,ordamaged.
Checktheelectricalconnectionsfor
goodcontact.Cleantheconnector
terminalsthoroughlywithelectrical
contactcleanerandapplydielectric
grease.
Thesparkplugisfouledorimproperly
gapped.
Adjustorreplacethesparkplug.
Theignitioncoil(s)havefailed.Testandreplacefaultycoil(s).
Thesparkplugwireisnotconnected.
Checkthesparkplugwireconnection.
Theenginedoesnotstart,starts
hard,orfailstokeeprunning
Aswitchiswornordamaged.
Testandreplacefaultyswitch.
Theengineloadisexcessive.Reducethegroundspeedorraise
height-of-cut.
Theaircleanerisdirty.
Cleanorreplacetheaircleaner
element.
Theoillevelinthecrankcaseislow.Addoiltothecrankcase.
Thecoolingnsandairpassages
abovetheengineareplugged.
Removetheobstructionandthoroughly
cleancoolingnsandtheairpassages.
Oneoftheignitioncoilshasfailed.T estandreplacethefaultycoil.
Thefueltankventsystemisplugged.Inspectfueltankventsystemfor
obstructionandrepairsystem.
Thereisdirtinthefuellter.Replacethefuellter.
Enginelosespower
Thereisdirt,water,orstalefuelinthe
fuelsystem.
Cleanandushthefuelsystem.
4000SeriesZMASTER®ServiceManual
Page3–3
Troubleshooting:GeneralTroubleshooting
3442-427RevA

Toro 74024 Specifications

General

Brand	Toro
Model	74024
Category	Lawn Mower
Language	English