Toro RT600 - Cleaning the Cooling System; Flushing the Cooling System; Filling the System with Coolant

Figure81
1.Fillerneck
3.Cleanwater
2.Funnel
C.Closetheventvalve.
D.Operatetheenginefor5minutesoruntilthe
coolanttemperaturegaugeintheinstrument
clusterindicates82°C(180°F),thenstopthe
engine.
CAUTION
Thewaterishotandcancauseburns.
Stayawayfromthedischargeendofthe
coolantdrainhose.
E.Openthedrainvalve(Figure78)anddrainthe
waterintoadrainpan.
F.Ifthewaterdrainedfromtheradiatorisdirty,
performsteps2-Athrough2-Euntilthewater
drainedfromtheradiatorisclean.
G.Closethedrainvalve.
FillingtheSystemwithCoolant
Important:Fillthecoolingsystemproperlytoprevent
airlocksinthecoolingpassages.Failingtoventthe
coolingsystemproperlycandamageit.
Note:Useamixtureof50%ethyleneglycoland50%water
inthemachine.Thelowestambientoperatingtemperature
forthismixtureisabove-37°C(-34°F).Iftheambient
temperatureislower,adjustthemixture.Useamixtureof
ethyleneglycolandwaterinthemachineallyear.
1.Removetheradiatorcap(Figure76andFigure77).
2.Opentheventvalve(Figure76).
3.Fillthecoolingradiatorwiththespeciedcoolant
mixtureuntiltheuidlevelisuptothetopoftheller
neck(Figure82).
Note:Thecoolantcapacityofboththeengineand
theradiatoris17.2L(18.2USqt).
Figure82
1.Coolantlevel(atthe
bottomofthellerneck)
3.Coolant(amixtureof50%
ethyleneglycoland50%
water)
2.Fillerneck
4.Closetheventvalve.
5.Installtheradiatorcap.
6.Installthenosepanel;refertoInstallingtheNosePanel
(page37).
7.FillthecoolantreservoirwithcoolantuptotheFull
mark.
8.Installthecoolantreservoircap.
9.Starttheengineandrunitathalfthrottlefor5minutes.
10.Stoptheengineandremovethekey.
11.Wait30minutes,thenchecktheuidlevelinthe
coolantreservoir.Ifitislow,addcoolant.
12.Installthesidepanels;refertoInstallingtheSidePanels
(page36).
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