Toro 4045 - Coolant System Draining and Flushing; Draining Coolant from the System; Flushing the Cooling System

DrainingtheCoolantfromtheSystem
Important:Donotpourcoolantontothegroundorinto
anunapprovedcontainerthatcanleak.
1.Parkthemachineonalevelsurface,stoptheengine,
andremovetheignitionkey.
2.Allowtheenginetocool.
3.Opentherear-accessdoor.
Note:Looktotheleftwhenyouopentherear-access
door,andyouwillndthedrainplugtuckedawayin
theback-leftcorner.
4.Placeadrainpanunderthedrainplug(Figure141).
Note:Thecoolantcapacityofboththeengineand
theradiatoris16.8L(17.7USqt).
Figure141
1.Radiatordrainplug
5.Openthedrainplugfortheradiatorandallowthe
coolantsystemtodraincompletely.
Note:Disposeoftheusedcoolantproperlyaccording
tolocalcodes.
6.Cleanthethreadsonthedrainplugandapply3layers
ofPTFEsealingtape.
7.Closethedrainplug(Figure141).
FlushingtheCoolingSystem
Engineandradiatorcoolantcapacity:16.8L(17.7USqt)
1.Parkthemachineonalevelsurface,stoptheengine,
andremovetheignitionkey.
2.Conditionthecoolingsystemasfollows:
A.Ensurethatthecoolantisdrainedfromthe
radiatorandthatthedrainplugisclosed;referto
DrainingtheCoolantfromtheSystem(page102).
B.Addacoolingsystemcleaningsolutiontotheto
theradiatorthroughthellerneck(Figure142).
Note:Usecleaningsolutionof21g(12ozdry)
ofsodiumcarbonateforevery17L(18USqt)
ofwater;otherwise,useacommerciallyavailable
equivalent.Followthedirectionsthatcomewith
thecleaningsolution.
Figure142
1.Fillerneck(radiator)3.Coolant-systemcleaning
solution
2.Funnel
C.Closethedrainplug(Figure141).
Important:Donotinstalltheradiatorcap.
D.Operatetheenginefor5minutesoruntilthe
coolanttemperatureindicates82°C(180°F),and
thenstoptheengine.
CAUTION
Thecleaningsolutionishotandcan
causeburns.
Stayawayfromthedischargeendofthe
coolantdrainplug.
E.Openthedrainplugfortheradiator,anddrain
thecleaningsolutionintoadrainpan.
F.Cleanthethreadsonthedrainplugandapply3
layersofPTFEsealingtape.
G.Closethedrainplug.
3.Flushthecoolingsystemasfollows:
102