Operator's Manual

g027478
Figure39
CheckingtheSparkPlug
Important:Donotcleanthesparkplug(s).
Alwaysreplacethesparkplug(s)whenithasa
blackcoating,wornelectrodes,anoilylm,or
cracks.
Ifyouseelightbrownorgrayontheinsulator,the
engineisoperatingproperly.Ablackcoatingonthe
insulatorusuallymeanstheaircleanerisdirty.
Setthegapto0.75mm(0.03inch).
g206628
Figure40
InstallingtheSparkPlug
g027480
Figure41
CleaningtheBlower
Housing
ServiceInterval:Every100hours/Yearly(whichever
comesrst)
Toensurepropercooling,ensurethatthegrass
screen,coolingns,andotherexternalsurfacesofthe
enginearekeptcleanatalltimes.
Cleanthecoolingnsandexternalsurfacesas
necessary.Makesurethatthecoolingshroudsare
installed.T orquetheblowerhousingscrewsto7.5
N∙m(5.5ft-lb).
Important:Operatingtheenginewithablocked
grassscreen,dirtyorpluggedcoolingns,and/or
coolingshroudsremoved,causesenginedamage
duetooverheating.
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