Toro 74906 - Check Spark Arrester (if Equipped); Fuel System Maintenance; Servicing the Electronic Fuel Injection System; Replacing the Low-Pressure Fuel Filter

CheckSparkArrester(if
equipped)
ServiceInterval:Every50hours
WARNING
Hotexhaustsystemcomponentsmayignite
gasolinevaporsevenaftertheengineisstopped.
Hotparticlesexhaustedduringengineoperation
mayigniteammablematerials.Firemayresultin
personalinjuryorpropertydamage.
Donotfuelorruntheengineunlesssparkarrester
isinstalled.
1.Stopengine,waitforallmovingpartstostop,and
removekey.Engageparkingbrake.
2.Waitformufertocool.
3.Ifanybreaksinthescreenorweldsareobserved,
replacethearrester.
4.Ifpluggingofthescreenisobserved,removethe
arresterandshakelooseparticlesoutofthearrester
andcleanscreenwithawirebrush(soakinsolventif
necessary).Reinstallarresteronexhaustoutlet.
FuelSystem
Maintenance
WARNING
Fuelsystemcomponentsareunderhighpressure.
Theuseofimpropercomponentscanresultin
systemfailure,gasolineleakage,andpossible
explosion.
Useonlyapprovedfuellinesandfuellters.
ServicingtheElectronicFuel
InjectionSystem
Thismachinecontainsanelectronicfuelinjectionsystem.It
controlsthefuelowunderdifferentoperatingconditions.
Theelectroniccontrolunit(ECU)continuouslymonitorsthe
operationoftheEFIsystem.
Ifaproblemorfaultwithinthesystemisdetected,the
malfunctionindicatorlight(MIL)isilluminated.TheMILis
theredlightlocatedintherightconsolepanel.
OncetheMILilluminates,initialtroubleshooting
checksshouldbemade.RefertotheMILsectionunder
Troubleshooting.
Ifthesechecksdonotcorrecttheproblem,furtherdiagnosis
andservicingbyanAuthorizedServiceDealerisnecessary.
ReplacingtheLow-pressure
FuelFilter
ServiceInterval:Every200hours/Yearly(whichevercomes
rst)(moreoftenindirtyordusty
conditions).
Thefuellterislocatedneartheengineonthefrontorrear
sideoftheengine.
1.DisengagethePTO,movethemotioncontrolleversto
theneutrallockedposition,andsettheparkingbrake.
2.Stoptheengine,removethekey,andwaitforallmoving
partstostopbeforeleavingtheoperatingposition.
3.Allowthemachinetocooldown.
4.Closethefuel-shutoffvalveundertheseat(
Figure58).
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