Toro 74956 - Fuel System Maintenance; Servicing the Electronic Fuel Injection System; Replacing the Low Pressure Fuel Filter; Servicing the Fuel Tank

FuelSystem
Maintenance
WARNING
Fuelsystemcomponentsareunderhighpressure.
Theuseofimpropercomponentscanresultin
systemfailure,gasolineleakageandpossible
explosion.
Useonlyapprovedfuellinesandfuellters.
ServicingtheElectronicFuel
InjectionSystem
Thismachinecontainsanelectronicfuelinjectionsystem.It
controlsthefuelowunderdifferentoperatingconditions.
Theelectroniccontrolunit(ECU)continuouslymonitorsthe
operationoftheEFIsystem.
Ifaproblemorfaultwithinthesystemisdetected,the
malfunctionindicatorlight(MIL)isilluminated.TheMILis
theredlightlocatedintherightconsolepanel.
OncetheMILilluminates,initialtroubleshooting
checksshouldbemade.RefertotheMILsectionunder
Toubleshooting.
Ifthesechecksdonotcorrecttheproblem,furtherdiagnosis
andservicingbyanAuthorizedServiceDealerisnecessary.
ReplacingtheLowPressure
FuelFilter
ServiceInterval:Every200hours/Yearly(whichevercomes
rst)(moreoftenindirtyordusty
conditions).
Thefuellterislocatedneartheengineonthefrontorrear
sideoftheengine.
1.DisengagethePTO,movethemotioncontrolleversto
theneutrallockedposition,andsettheparkingbrake.
2.Stoptheengine,removethekey,andwaitforallmoving
partstostopbeforeleavingtheoperatingposition.
3.Allowthemachinetocooldown.
4.Stoptheengine,removethekey,andwaitforallmoving
partstostopbeforeleavingtheoperatingposition.
5.Closethefuelshutoffvalveundertheseat(
Figure55).
G008963
12
3
Figure55
1.Fuellter
3.Fuelline
2.Hoseclamp
6.Squeezetheendsofthehoseclampstogetherandslide
themawayfromthelter(Figure55).
7.Removethelterfromthefuellines.
8.Installanewlterandmovethehoseclampscloseto
thelter(Figure55).
9.Openthefuelshutoffvalve.
Note:Itisimportanttoreinstallthefuellinehosesand
securewithplastictiesthesameastheywereoriginally
installedatthefactorytokeepthefuellineawayfrom
componentsthatcouldcausefuellinedamage.
ServicingtheHighPressure
FuelFilter
Donotattempttoservicethehighpressurefuellter.The
highpressurelterisintegratedwithinthefuelpumpmodule.
Thefuellterandothercomponentsinsidethefuelpump
modulearenotservicable.DoNotattempttoopenthefuel
pumpmodule.
EnsurethatanAuthorizedServiceDealerreplacesthefuel
pumpmodulewiththehighpressurefuellter.
ServicingtheFuelTank
Donotattempttodrainthefueltank.Ensurethatan
AuthorizedServiceDealerdrainsthefueltankandservices
anycomponentsofthefuelsystem.
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