Toro 74942 - Fuel System Maintenance; Servicing the Electronic Fuel-Injection System; Replacing the Low-Pressure Fuel Filter; Servicing the High-Pressure Fuel Filter

FuelSystem
Maintenance
WARNING
Fuelsystemcomponentsareunderhighpressure.
Theuseofimpropercomponentscanresultin
systemfailure,gasolineleakageandpossible
explosion.
Useonlyapprovedfuellinesandfuellters.
ServicingtheElectronic
Fuel-InjectionSystem
Thismachinecontainsanelectronicfuel-injectionsystem.It
controlsthefuelowunderdifferentoperatingconditions.
Theelectroniccontrolunit(ECU)continuouslymonitorsthe
operationoftheEFIsystem.
Ifaproblemorfaultwithinthesystemisdetected,the
malfunctionindicatorlight(MIL)isilluminated.TheMILis
theredlightlocatedintherightconsolepanel.
OncetheMILilluminates,performinitialtroubleshooting
checks.RefertotheMILsectionunderTroubleshooting
(page65).
Ifthesechecksdonotcorrecttheproblem,furtherdiagnosis
andservicingbyanAuthorizedServiceDealerisnecessary.
ReplacingtheLow-Pressure
FuelFilter
ServiceInterval:Every200hours/Yearly(whichevercomes
rst)(moreoftenindirtyordusty
conditions).
Thefuellterislocatedneartheengineonthefrontorrear
sideoftheengine.
1.DisengagethePTO,movethemotion-controlleversto
theneutral-lockedposition,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.
ServicingtheHigh-Pressure
FuelFilter
Donotattempttoservicethehighpressurefuellter.The
highpressurelterisintegratedwithinthefuelpumpmodule.
Thefuellterandothercomponentsinsidethefuelpump
modulearenotservicable.Donotattempttoopenthefuel
pumpmodule.
EnsurethatanAuthorizedServiceDealerreplacesthefuel
pumpmodulewiththehighpressurefuellter.
ServicingtheFuelTank
Donotattempttodrainthefueltank.Ensurethatan
AuthorizedServiceDealerdrainsthefueltank.
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