Toro RT600 - Cleaning the Cooling System; Draining the Coolant from the System

Figure78
1.Drainhose
3.Radiatorshroud(lower-left
area)
2.Drainvalve
4.Openthedrainvalveontheradiator,andallowthe
coolanttodraincompletely.
Note:Disposeoftheusedcoolantproperlyaccording
tolocalcodes.
5.Closethedrainvalve(Figure78).
FlushingtheCoolingSystem
Engineandradiatorcoolantcapacity:17.2liter(18.2US
qt)
1.Conditionthecoolingsystemasfollows:
A.Ensurethatthecoolantisdrainedfromthe
radiatorandthatthedrainvalveisclosed.
B.Opentheventvalve(Figure76).
C.Addacoolingsystemcleaningsolutiontotheto
theradiatorthroughthellerneck(Figure79).
Note:Usecleaningsolutionofsodiumcarbonate
andwater(oracommerciallyavailableequivalent).
Followthedirectionsthatcomewiththecleaning
solution.
Figure79
1.Coolantsystemcleaning
solution
3.Fillerneck(radiator)
2.Funnel
D.Closetheventvalve.
Important:Donotinstalltheradiatorcap.
E.Operatetheenginefor5minutesoruntilthe
coolanttemperaturegaugeintheinstrument
clusterindicates82°C(180°F),thenstopthe
engine(Figure80).
Figure80
CAUTION
Thecleaningsolutionishotandcan
causeburns.
Stayawayfromthedischargeendofthe
coolantdrainhose.
F.Openthedrainvalveanddrainthecleaning
solutionintoadrainpan(Figure78).
G.Closethedrainvalve.
2.Flushthecoolingsystemasfollows:
A.Opentheventvalve(Figure76).
B.Filltheradiatorwithcleanwater(Figure81).
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