Toro 74785 - Cleaning the Blower Housing

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Figure34
CheckingtheSparkPlug
Important:Donotcleanthesparkplug(s).
Alwaysreplacethesparkplug(s)whenithasa
blackcoating,wornelectrodes,anoilylm,or
cracks.
Note:Ifyouseelightbrownorgrayontheinsulator,
theengineisoperatingproperly.Ablackcoatingon
theinsulatorusuallymeansthattheaircleanerisdirty.
Setthegapto0.76mm(0.030inch).
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Figure35
InstallingtheSparkPlug
Tightenthesparkplugto25to29N∙m(18to22ft-lb).
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Figure36
CleaningtheBlower
Housing
ServiceInterval:Every100hours/Yearly(whichever
comesrst)
Toensurepropercooling,makesurethatthegrass
screen,coolingns,andotherexternalsurfacesofthe
enginearekeptcleanatalltimes.
Cleanthecoolingnsandexternalsurfacesas
necessary.Makesurethatthecoolingshroudsare
installed.Torquetheblowerhousingscrewsto7.5
N·m(5.5ft-lb).
Important:Operatingtheenginewithablocked
grassscreen,dirtyorpluggedcoolingns,and/or
coolingshroudsremoved,causesenginedamage
duetooverheating.
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