Toro 30473 - Cleaning the Fuel Tank; Checking the Fuel the Lines and Connections; Bleeding the Fuel System; Bleeding Air from the Injectors

Figure31
CleaningtheFuelTank
ServiceInterval:Every2years
Removeandcleanthein-linestrainersafterdrainingthetank.
Usecleandieselfueltoushoutthetank.
Important:Drainandcleanthetankifthefuelsystem
becomescontaminatedorifyouarestoringthemachine
foranextendedperiod.
CheckingtheFueltheLines
andConnections
ServiceInterval:Every400hours/Yearly(whichevercomes
rst)
Inspectthefuellinesfordeterioration,damage,chafng,or
looseconnections.
BleedingtheFuelSystem
CAUTION
Theenginemaystartduringthisprocedure.
Movingfansandbeltsinarunningenginecan
severelyinjureyouorbystanders.
Keephands,ngers,looseclothing/jewelry,and
hairawayfromtheenginefanandbeltduringthis
procedure.
1.Parkthemachineonalevelsurface.Ensurethatthe
fueltankisatleasthalffull.
2.Unlatchandraisethehood.
3.Placearagundertheair-bleedscrewonthe
fuel-injectionpumpandopenit(Figure32).
Figure32
1.Fuel-injection-pumpbleedscrew
4.TurntheignitionkeytotheONposition.
Note:Theelectricfuelpumpbeginsoperation,
therebyforcingairoutattheair-bleedscrew .
5.LeavethekeyintheONpositionuntilasolidstream
offuelowsoutaroundthescrew .
6.TightenthescrewandturnkeytotheOFFposition.
Note:Normally,theengineshouldstartafteryou
bleedthefuelsystem.However,ifenginedoesnot
start,airmaybetrappedbetweeninjectionpumpand
injectors;refertoBleedingAirfromtheInjectors(page
26).
BleedingAirfromtheInjectors
Note:Usethisprocedureonlyifyoupurgedthefuelsystem
throughnormalprimingproceduresandtheenginedoesnot
start;refertoBleedingtheFuelSystem(page26).
1.Placearagunderthepipeconnectioncomingfrom
theinjectionpumptotheNo.1injectornozzleas
illustratedinFigure33.
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