Toro 74770 - Servicing the Spark Plug

g027517
Figure36
ServicingtheSparkPlug
ServiceInterval:Every200hours—Checkthespark
plug(s)conditionandgap.
Every500hours—Replacethesparkplug(s).
Type:ChampionXC12YCorequivalentthatisRFI
compliant
AirGap:0.76mm(0.03inch)
RemovingtheSparkPlug
1.Disengagetheblade-controlswitch,move
themotion-controlleversoutwardtothePARK
position,shutofftheengine,andremovethe
key.
2.Beforeremovingthesparkplug(s),cleanthe
areaaroundthebaseoftheplugtokeepdirt
anddebrisoutoftheengine.
3.Removethesparkplug(Figure37).
g027478
Figure37
CheckingtheSparkPlug
Important:Donotcleanthesparkplug(s).
Alwaysreplacethesparkplug(s)whenithas:a
blackcoating,wornelectrodes,anoilylm,or
cracks.
Note:Ifyouseelightbrownorgrayontheinsulator,
theengineisoperatingproperly.Ablackcoatingon
theinsulatorusuallymeanstheaircleanerisdirty.
Setthegapto0.76mm(0.030inch).
g027479
Figure38
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