Toro 72946 - 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-systemcomponentsareunderhigh
pressure.Theuseofimpropercomponents
canresultinsystemfailure,fuelleakage,and
possibleexplosion.
Useonlyapprovedfuellinesandfuellters.
ServicingtheElectronic
Fuel-InjectionSystem
Thismachinecontainsanelectronicfuel-injection
system.Itcontrolsthefuelowunderdifferent
operatingconditions.
Theelectronic-controlunit(ECU)continuously
monitorstheoperationoftheEFIsystem.
Ifaproblemorfaultwithinthesystemisdetected,the
LEDstatuslightilluminates.TheMIListheredlight
locatedontherightsideofthehourmeter.
Oncethelightilluminates,makeinitialtroubleshooting
checks;refertotheLEDstatuslightsectionunder
Troubleshooting(page75).
Ifthesechecksdonotcorrecttheproblem,further
diagnosisandservicingbyanAuthorizedService
Dealerisnecessary.
Replacingthe
Low-PressureFuelFilter
ServiceInterval:Every150hours/Yearly(whichever
comesrst)
Thefuellterislocatedneartheengineonthefront
orrearsideoftheengine.
1.Parkthemachineonalevelsurface,disengage
theblade-controlswitch,andengagetheparking
brake.
2.Shutofftheengine,removethekey,andwait
forallmovingpartstostopbeforeleavingthe
operatingposition.
3.Waitforthemachinetocooldown.
4.Closethefuel-shutoffvalveundertheseat
(Figure65).
g008963
Figure65
1.Fuellter
3.Fuelline
2.Hoseclamp
5.Squeezetheendsofthehoseclampstogether
andslidethemawayfromthelter(Figure65).
6.Removethelterfromthefuellines.
7.Installanewlterandmovethehoseclamps
closetothelter(Figure65).
8.Openthefuel-shutoffvalve.
Important:Installthefuellinehosesandsecure
withplastictiesthesameastheywereoriginally
installedatthefactorytokeepthefuellineaway
fromcomponentsthatcancausefuellinedamage.
Servicingthe
High-PressureFuelFilter
Donotattempttoservicethehigh-pressurefuel
lter.Thehigh-pressurelterisintegratedwithin
thefuel-pumpmodule.Thefuellterandother
componentsinsidethefuel-pumpmodulearenot
serviceable.
Important:Donotattempttoopenthefuel-pump
module.
EnsurethatanAuthorizedServiceDealerreplaces
thefuel-pumpmodulewiththehigh-pressurefuellter.
ServicingtheFuelTank
Donotattempttodrainthefueltank.Ensurethatan
AuthorizedServiceDealerdrainsthefueltankand
servicesanycomponentsofthefuelsystem.
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