Operator's Manual

Figure37
1.Spark-plugwire/sparkplug
4.Cleanaroundthesparkplugstopreventdirtfrom
fallingintotheengineandpotentiallycausing
damage.
5.Removethesparkplugsandthemetalwashers.
CheckingtheSparkPlugs
ServiceInterval:Every100hours
1.Lookatthecenterofthesparkplugs(Figure38).
Ifyouseelightbrownorgrayontheinsulator,the
engineisoperatingproperly.Ablackcoatingonthe
insulatorusuallymeansthattheaircleanerisdirty.
2.Ifneeded,cleanthesparkplugwithawirebrushto
removecarbondeposits.
Figure38
1.Centerelectrodeinsulator3.Airgap(nottoscale)
2.Sideelectrode
Important:Alwaysreplacethesparkplugs
whenithasablackcoating,wornelectrodes,
anoilylm,orcracks.
3.Checkthegapbetweenthecenterandsideelectrodes
(Figure38).Bendthesideelectrode(Figure38)if
thegapisnotcorrect.
InstallingtheSparkPlugs
1.Installthesparkplugsandthemetalwasher.Ensure
thattheairgapissetcorrectly.
2.Tightenthesparkplugsto16ft-lb(22N•m).
3.Connectthewirestothesparkplugs(Figure38).
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