Toro 74946 - Fuel System Maintenance; Servicing the Electronic Fuel-Injection System; Replacing the Low-Pressure Fuel Filter; Servicing the High-Pressure Fuel Filter

FuelSystem
Maintenance
WARNING
Fuel-systemcomponentsareunderhighpressure.
Theuseofimpropercomponentscanresultin
systemfailure,gasolineleakage,andpossible
explosion.
Useonlyapprovedfuellinesandfuellters.
ServicingtheElectronic
Fuel-InjectionSystem
Thismachinecontainsanelectronicfuel-injectionsystem.It
controlsthefuelowunderdifferentoperatingconditions.
Theelectroniccontrolunit(ECU)continuouslymonitorsthe
operationoftheEFIsystem.
Ifaproblemorfaultwithinthesystemisdetected,the
malfunctionindicatorlight(MIL)illuminates.TheMIListhe
redlightlocatedintherightconsolepanel.
OncetheMILilluminates,makeinitialtroubleshooting
checks.RefertotheMILsectionunderTroubleshooting
(page70).
Ifthesechecksdonotcorrecttheproblem,furtherdiagnosis
andservicingbyanAuthorizedServiceDealerisnecessary.
ReplacingtheLow-Pressure
FuelFilter
ServiceInterval:Every200hours/Yearly(whichevercomes
rst)
Thefuellterislocatedneartheengineonthefrontorrear
sideoftheengine.
1.Disengagetheblade-controlswitch(PTO),movethe
motion-controlleverstotheNEUTRAL-LOCKposition,
andsettheparkingbrake.
2.Shutofftheengine,removethekey,andwaitforall
movingpartstostopbeforeleavingtheoperating
position.
3.Waitforthemachinetocooldown.
4.Closethefuel-shutoffvalveundertheseat(Figure56).
G008963
12
3
Figure56
1.Fuellter
3.Fuelline
2.Hoseclamp
5.Squeezetheendsofthehoseclampstogetherandslide
themawayfromthelter(Figure56).
6.Removethelterfromthefuellines.
7.Installanewlterandmovethehoseclampscloseto
thelter(Figure56).
8.Openthefuel-shutoffvalve.
Important:Installthefuellinehosesandsecurewith
plastictiesthesameastheywereoriginallyinstalledat
thefactorytokeepthefuellineawayfromcomponents
thatcancausefuellinedamage.
ServicingtheHigh-Pressure
FuelFilter
Donotattempttoservicethehigh-pressurefuellter.The
high-pressurelterisintegratedwithinthefuel-pumpmodule.
Thefuellterandothercomponentsinsidethefuel-pump
modulearenotserviceable.
Important:Donotattempttoopenthefuel-pump
module.
EnsurethatanAuthorizedServiceDealerreplacesthe
fuel-pumpmodulewiththehigh-pressurefuellter.
ServicingtheFuelTank
Donotattempttodrainthefueltank.Ensurethatan
AuthorizedServiceDealerdrainsthefueltank.
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