Toro 74312 - Checking the Spark Arrester; Fuel System Maintenance; Servicing the Electronic Fuel-Injection System; Replacing the Fuel Filter

CheckingtheSpark
Arrester
ForaModelwithaSparkArrester
ServiceInterval:Every50hours
WARNING
Hotexhaustsystemcomponentsmayignite
fuelvaporsevenyoushutofftheengine.Hot
particlesexhaustedduringengineoperation
mayigniteammablematerials.Firemay
resultinpersonalinjuryorpropertydamage.
Donotrefuelorruntheengineunlessaspark
arresterisinstalled.
1.Shutofftheengine,waitforallmovingpartsto
stop,andremovethekey.Engagetheparking
brake.
2.Waitforthemufertocool.
3.Ifthereareanybreaksinthescreenorwelds,
replacethearrester.
4.Ifthescreenisplugged,removethearrester
andshakethelooseparticlesoutofthearrester
andcleanthescreenwithawirebrush(soakit
insolventifnecessary).Installthearresteron
theexhaustoutlet.
FuelSystem
Maintenance
WARNING
Fuelsystemcomponentsareunderhigh
pressure.Theuseofimpropercomponents
canresultinsystemfailure,fuelleakage,and
possibleexplosion.
Useonlyapprovedfuellinesandfuellters.
ServicingtheElectronic
Fuel-InjectionSystem
Thismachinecontainsanelectronicfuel-injection
system.Itcontrolsthefuelowunderdifferent
operatingconditions.
Theelectroniccontrolunit(ECU)continuously
monitorstheoperationoftheEFIsystem.
Ifaproblemorfaultwithinthesystemisdetected,the
malfunctionindicatorlight(MIL)illuminates.TheMIL
istheredlightlocatedintherightconsolepanel.
OncetheMILilluminates,makeinitialtroubleshooting
checks.RefertotheMILsectionunder
Troubleshooting(page62).
Ifthesechecksdonotcorrecttheproblem,further
diagnosisandservicingbyanAuthorizedService
Dealerisnecessary.
ReplacingtheFuelFilter
ServiceInterval:Every200hours/Yearly(whichever
comesrst)(moreoftenindirtyor
dustyconditions).
Thefuellterislocatedneartheengineonthefront
orrearsideoftheengine.
1.Movethespeed-controllevertotheNEUTRAL
positiontostopthemachine.
2.DisengagethePTO,engagetheparkingbrake,
shutofftheengine,andwaitforallmovingparts
tostop.
3.Waitforthemachinetocooldown.
4.Clampthehoseonthefueltanksideofthefuel
lter.
5.Squeezetheendsofthehoseclampstogether
andslidethemawayfromthelter(Figure37).
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