Toro TimeCutter SS 4216 74616 - Checking the Spark Plug

3.Disconnectthewirefromthesparkplug(Figure33).
G017865
1
Figure33
1.Spark-plugwire
4.Cleanaroundthesparkplugtopreventdirtfromfalling
intotheengineandpotentiallycausingdamage.
5.Removethesparkplugandmetalwasher.
CheckingtheSparkPlug
1.Inspectthesparkplug(Figure34).
Note:Ifyouseelightbrownorgrayontheinsulator,
theengineisoperatingproperly.Ablackcoatingonthe
insulatorusuallymeansthattheaircleanerisdirty.
Figure34
1.Centerelectrodeinsulator3.Airgap(nottoscale)
2.Sideelectrode
Important:Donotcleanthesparkplug.Always
replacethesparkplugwhenithasablackcoating,
wornelectrodes,anoilylm,orcracks.
2.Checkthegapbetweenthecenterandsideelectrodes
(
Figure34).Bendthesideelectrodeifthegapisnot
correct.
InstallingtheSparkPlug
1.Installthesparkplugandmetalwasher.
Note:Ensurethattheairgapissetcorrectly.
2.Tightenthesparkplugto20N-m(15ft-lb).
3.Connectthewiretothesparkplug.
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