Toro 30487TC - Checking the Fuel Lines and Connections; Bleeding the Fuel System; Bleeding Air from the Injectors

CheckingtheFuelLinesand
Connections
ServiceInterval:Every400hours
Inspectthefuellinesfordeterioration,damage,chafng,or
looseconnections.
BleedingtheFuelSystem
1.Parkthemachineonalevelsurface.Ensurethatthe
fueltankisatleasthalffull.
2.Unlatchandraisethehood.
3.Placearagundertheair-bleedscrewonthe
fuel-injectionpumpandopenit(Figure40).
Figure40
1.Fuel-injection-pumpbleedscrew
4.TurntheignitionkeytotheONposition.
Note:Theelectricfuelpumpbeginsoperation,
therebyforcingairoutattheair-bleedscrew .
CAUTION
Theenginemaystartduringthisprocedure.
Movingfansandbeltsinarunningenginecan
severelyinjureyouorbystanders.
Keephands,ngers,looseclothing/jewelry,
andhairawayfromtheenginefanandbelt
duringthisprocedure.
5.LeavethekeyintheONpositionuntilasolidstream
offuelowsoutaroundthescrew .
6.TightenthescrewandturnkeytotheOFFposition.
Note:Normally,theengineshouldstartafteryou
bleedthefuelsystem.However,ifenginedoesnot
start,airmaybetrappedbetweeninjectionpumpand
injectors;refertoBleedingAirfromtheInjectors(page
39).
BleedingAirfromtheInjectors
Note:Usethisprocedureonlyifyoupurgedthefuelsystem
throughnormalprimingproceduresandtheenginedoesnot
start;refertoBleedingtheFuelSystem(page39).
1.Placearagunderthepipeconnectioncomingfrom
theinjectionpumptotheNo.1injectornozzleas
illustratedinFigure41.
Figure41
1.PipeconnectionfromtheinjectionpumptotheNo.1
injectornozzle
2.MovethethrottletotheFASTposition.
3.TurntheignitionkeytheSTARTpositionandwatchthe
fuelowaroundtheconnector.
CAUTION
Theenginemaystartduringthisprocedure.
Movingfansandbeltsinarunningenginecan
severelyinjureyouorbystanders.
Keephands,ngers,looseclothing/jewelry,
andhairawayfromtheenginefanandbelt
duringthisprocedure.
4.Tightenthepipeconnectorsecurelywhenitattainsa
solidow.
5.TurnthekeytotheOFFposition.
6.Repeatthisprocedurefortheremainingnozzles.
39