Toro 25450A - Page 68

D.Openthedrainvalveanddrainthecleaning
solutionintoadrainpan(Figure104andFigure
106).
E.Closethedrainvalve(Figure106).
2.Flushthecoolingsystemasfollows:
A.Fillthecoolingsystemwithcleanwater(Figure
109).
Figure109
1.Fillerneck(recoverytank)3.Cleanwater
2.Funnel
B.Operatetheenginefor5minutesoruntilthe
coolanttemperatureinthecommand-center
displayindicates82°C(180°F),thenstopthe
engine.
CAUTION
Thewaterishotandcancauseburns.
Stayawayfromthedischargeendofthe
coolantdrainhose.
C.Openthedrainvalve(Figure106)anddrainthe
waterintoadrainpan.
D.Ifthewaterdrainedfromtheradiatorisdirty,
performsteps2-Athrough2-Cuntilthewater
drainedfromtheradiatorisclean.
E.Closethedrainvalve(Figure106).
FillingtheSystemwithCoolant
Thecoolantcapacityoftheengineandtheradiator:18.5
L(19.5USqt).
Important:Fillthecoolingsystemproperlytoprevent
airlocksinthecoolingpassages.Failingtoventthe
coolingsystemproperlycandamageboththeengine
andthecoolingsystem.
1.Removetheradiatorcapfromtherecoverytank
(Figure103).
2.Fillthecoolingsystemwiththespeciedcoolant
mixture(Figure110)untiltheuidlevelisuptothe
midpointinthesightgauge(Figure103).
Figure110
1.Coolantlevel(midpointin
thesightgauge)
3.Coolant(amixtureof50%
ethyleneglycoland50%
water)
2.Funnel
3.Installtherecovery-tankcap(Figure103).
4.Starttheengineandrunitathalfthrottlefor5minutes.
5.Stoptheengineandremovethekey.
6.Wait30minutes,thenchecktheuidlevelinthe
recoverytank.Ifitislow,addcoolant.
7.Closethereservoirdoorandsecureittothehoodwith
the2hex-headbolts(Figure103)thatyouremovedin
step2ofDrainingtheCoolantfromtheSystem(page
66).
8.Installthesidepanels;refertoInstallingtheSidePanels
(page47).
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