Toro reelmaster 5410 series - Fuel Pump (Machine with Kubota Gasoline Engine)

FuelPump(MachinewithKubotaGasolineEngine)
TheelectricfuelpumpassemblyusedonmachineswithaKubotagasoline
engineisacombinationpositivedisplacementfuelpumpandafuellevelsending
unit.Thefuelpumpassemblyprovidespressurizedfueltotheenginefuelrail
inareturn-lesssystemandincludesaregulatortomaintainfuelpressureof
approximately276kPa(40psi).Thefuelpump/senderassemblyisattachedto
thetopofthefueltank.
Electricalpowerforthefuelpumpisavailablewhenthefuelpumprelayis
energizedbytheengineECU.Thefuelpumpelectricalcircuitisprotectedbya
15Afusethatislocatedintheenginepowercenter.
Note:WhenthekeyswitchisturnedtoON/RUN,theengineECUenergizesthe
fuelpumprelayforapproximately3secondswhichallowsthefuelsystemtobe
pressurized.Oncetheengineisrunning,thefuelpumprelayisalwaysenergized.
TestingtheFuelPump
1.Parkthemachineonalevelsurface,lowerthecuttingunits,shutoffthe
engine,andsettheparkingbrake.Removethekeyfromthekeyswitch.
Raiseandsupportthehood.
CAUTION
Thefuelsupplyhosewillcontainpressurizedfuel.Becarefulwhen
disconnectingfuelsupplyhose.Wipeupanyspilledfuelbefore
startingtheengine.
g228840
Figure278
1.Fuelsupplyhose2.Hoseclamp
3.Fueltting
2.Loosenhoseclampthatsecuresfuelsupplyhosetofuelttingonenginefuel
rail.Carefullydisconnectfuelsupplyhosefromfueltting(Figure278).
3.Installafuelpressuregaugecapableofmeasuring350kPa(50psi)tothe
disconnectedhose.
4.Whilemonitoringpressuregauge,turnkeyswitchtoON/RUN(donotstart
engine)sothatthefuelpumprelayandfuelpumpareenergized.The
fuelpressuredisplayedonthegaugeshouldrise.Afterpumprelayis
de-energized(approximately3seconds),turnkeyswitchtoOFFandthen
backtoON/RUN(donotstartengine)tore-energizethefuelpumprelayand
fuelpump.Fuelpumppressureshouldbeapproximately276kPa(40psi).
ElectricalSystem:TestingtheElectricalComponents
Page7–112
Reelmaster
®
5410/5510/5610Series
15216SLRevC