Toro Groundsmaster 3280-D - Purging the Fuel-Injection Pump; Operating Tips

PurgingtheFuel-Injection
Pump
1.Parkthemachineonalevelsurface.
2.Engagetheparkingbrake.
3.Ensurethatthefueltankisatleasthalffull.
4.Unlatchandraisethehood.
5.Opentheair-bleedscrewonthefuel-injection
pump(Figure28).
g012589
Figure28
1.Air-bleedscrew
6.RotatethekeyswitchtotheONposition.
Theelectricfuelpumpbeginsforcingairout
aroundtheair-bleedscrew.
7.LeavethekeyswitchintheONpositionuntila
solidstreamoffuelowsoutaroundthescrew.
8.Tightenthescrewandrotatekeyswitchtothe
OFFposition.
Note:Theengineshouldstartafteryouperform
thisprocedure.However,iftheenginedoesnot
start,airmaybetrappedbetweentheinjection
pumpandtheinjectors;refertoPurgingtheAir
fromtheFuel-InjectorTubing(page45).
9.Wipecleananyfuelthathasaccumulated
aroundtheinjectionpump.
OperatingTips
•Practicedrivingbeforeoperatingthemachine,
becauseithasahydrostatictransmission
anditscharacteristicsaredifferentthansome
turf-maintenancemachines.
•Tomaintainenoughpowerforthemachineand
deckwhilemowing,regulatethetractionpedalto
keeptheenginespeed(rpm)highandconstant.
Decreasethegroundspeedastheloadonthe
cuttingbladesincreases;increasetheground
speedastheloadonthebladesdecreases.This
allowstheengine,workingwiththetransmission,to
sensethepropergroundspeedwhilemaintaining
ahighblade-tipspeednecessaryforgoodquality
ofcut.Therefore,allowthetractionpedaltomove
upwardastheenginespeeddecreases,andpress
pedalslowlyasthespeedincreases.Whendriving
from1workareatoanother(withnoloadandthe
deckraised),havethrottleintheFASTpositionand
pressthetractionpedalslowlybutfullytoattain
themaximumgroundspeed.
•Lockthebrakepedalstogetherbeforetransporting
themachine.
•Youcanusethebrakestoassistinturningthe
machine;but,usethemcarefullyonsoftor
wetgrassbecausedoingsomaydamagethe
turf.Youcanalsousethebrakestocontrolthe
directionofthedeckwhentrimmingalongfences
orsimilarobjects.Athirdwayyoucanusethe
brakesistomaintaintraction.Forexample;in
someslopeconditions,theuphillwheelslipsand
losestraction.Ifthishappens,presstheuphill
brakepedalgraduallyandintermittentlyuntilthe
uphillwheelstopsslipping,thusincreasingthe
tractiononthedownhillwheel.Ifyoudonotwant
independentbraking,settheleveronleftbrake
pedalwithrightpedal.Thisprovidessimultaneous
brakingatbothwheels.
•Beforeshuttingofftheengine,moveallcontrolsto
theNEUTRALpositionandmovethethrottletothe
SLOWposition.RotatethekeyswitchtotheOFF
positiontoshutofftheengine.
•Theenginedoesnotrunwhentheenginecoolant
isinovertemperaturecondition.Lettheengine
andcoolingsystemcool,andcheckthecooling
system;refertoCheckingtheCoolingSystemand
CoolantLevel(page57).
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