Toro 25430 - Page 57

Figure80
1.Drainhose
3.Radiatorshroud(lower-left
area)
2.Drainvalve
4.Openthedrainvalveontheradiator,andallowthe
coolanttodraincompletely.
Note:Disposeoftheusedcoolantproperlyaccording
tolocalcodes.
5.Closethedrainvalve(Figure80).
FlushingtheCoolingSystem
Engineandradiatorcoolantcapacity:17.2liter(18.2US
qt)
1.Conditionthecoolingsystemasfollows:
A.Ensurethatthecoolantisdrainedfromthe
radiatorandthatthedrainvalveisclosed.
B.Opentheventvalve(Figure78).
C.Addacoolingsystemcleaningsolutiontotheto
theradiatorthroughthellerneck(Figure81).
Note:Usecleaningsolutionofsodiumcarbonate
andwater(oracommerciallyavailableequivalent).
Followthedirectionsthatcomewiththecleaning
solution.
Figure81
1.Coolantsystemcleaning
solution
3.Fillerneck(radiator)
2.Funnel
D.Closetheventvalve.
Important:Donotinstalltheradiatorcap.
E.Operatetheenginefor5minutesoruntilthe
coolanttemperaturegaugeintheinstrument
clusterindicates82°C(180°F),thenstopthe
engine(Figure82).
Figure82
CAUTION
Thecleaningsolutionishotandcan
causeburns.
Stayawayfromthedischargeendofthe
coolantdrainhose.
F.Openthedrainvalveanddrainthecleaning
solutionintoadrainpan(Figure80).
G.Closethedrainvalve.
2.Flushthecoolingsystemasfollows:
A.Opentheventvalve(Figure78).
B.Filltheradiatorwithcleanwater(Figure83).
57