Toro Z Master Professional 7500-D Series - Changing the Engine Coolant

Iftheradiatorisclean,proceedtostep8.
7.Covertheenginewithapieceofcardboardor
aplasticsheet.Squirtwaterthroughthens.
Blowthroughwithlow-pressureairfromboth
directions.
Note:Ifdebrisremains,repeatuntilclean.
8.Lowerthehood.
9.Starttheenginetoensurethatthefanfunctions
properly.
ChangingtheEngine
Coolant
ServiceInterval:Every2,000hours/Every2years
(whichevercomesrst)
1.Parkthemachineonalevelsurface,disengage
theblade-controlswitch,andengagetheparking
brake.
2.Shutofftheengine,removethekey,andwait
forallmovingpartstostopbeforeleavingthe
operatingposition.
3.Rotatethehoodforward.
4.Drainthecoolantwhentheengineiscool.
5.Removetheradiatorcap,placeapanunder
theradiator,andremovethedrainplugatthe
bottomoftheradiator.
6.Removethecoolanthosefromtheoilcoolerand
drainthecoolantfromtheengineblock(Figure
59).
g233651
Figure59
1.Coolanthose
7.Installthedrainplugsandhoses.
8.Fillradiatorwitha50/50mixofwaterand
ethyleneglycol.
Note:TheuseofHavoline
®
XtendedLife
coolantisrecommended.
Allowsomeroom(approximately12.7mm(1/2
inch))forexpansion.Add50/50coolantmixto
theoverowbottleontheleftsideoftheengine
asrequiredtobringtheleveluptotheindicator
lineonthebottle.
9.Operateengineuntiltheenginethermostat
opensandthecoolantiscirculatingthroughthe
radiatorcore.
Asairpurgesfromtheengineblockandthe
coolantleveldrops,addadditionalcoolanttothe
radiator.
10.Whentheradiatoriscompletelyfullandno
additionalcoolantcanbeadded,continue
runningandinstalltheradiatorcap.
Ensurethatthecapiscompletelyseatedby
pressingdownrmlywhileturning,untilthecap
stops.Oncethecapisinstalled,shutoffthe
engine.
58