Toro 30696 - Checking the Spark Plugs

Figure29
1.Spark-plugwire/sparkplug
4.Cleanaroundthesparkplugstopreventdirtfrom
fallingintotheengineandpotentiallycausing
damage.
5.Removethesparkplugsandthemetalwashers.
CheckingtheSparkPlugs
1.Lookatthecenterofthesparkplugs(Figure30).
Ifyouseelightbrownorgrayontheinsulator,the
engineisoperatingproperly.Ablackcoatingonthe
insulatorusuallymeansthattheaircleanerisdirty.
2.Ifneeded,cleanthesparkplugwithawirebrushto
removecarbondeposits.
Figure30
1.Centerelectrodeinsulator3.Airgap(nottoscale)
2.Sideelectrode
Important:Alwaysreplacethesparkplugs
whenithasablackcoating,wornelectrodes,
anoilylm,orcracks.
3.Checkthegapbetweenthecenterandsideelectrodes
(Figure30).Bendthesideelectrode(Figure30)if
thegapisnotcorrect.
InstallingtheSparkPlugs
1.Installthesparkplugsandthemetalwasher.Ensure
thattheairgapissetcorrectly.
2.Tightenthesparkplugsto16ft-lb(22N•m).
3.Connectthewirestothesparkplugs(Figure30).
30