Operator's Manual

ServicingtheSparkPlug
ServiceInterval:Every100hours/Every6months
(whichevercomesrst)—Checkthe
sparkplug.
Every300hours/Yearly(whichevercomes
rst)—Replacethesparkplug.
SparkPlugSpecications
Type:NGKBPR6ESorequivalent
Gap:0.7to0.8mm(0.028to0.031inch)
Note:Usea21mm(13/16inch)spark-plugwrench
forremovingandinstallingthesparkplug.
RemovingtheSparkPlug
1.Parkthemachineonalevelsurfaceandshut
offtheengine.
2.Ensurethatthemachinesurfacesarecool.
3.Pullthespark-plugwireofftheterminalofthe
sparkplug(Figure46).
g014506
Figure46
1.Sparkplug
2.Wire
4.Cleanaroundthesparkplug.
5.Rotatethesparkplugcounterclockwiseusing
a21mm(13/16inch)spark-plugwrenchto
removetheplugandthesealingwasher(Figure
47).
g019749
Figure47
CheckingtheSparkPlug
Important:Donotcleanthesparkplug.Always
replacethesparkplugwhenithasablackcoating,
wornelectrodes,anoilylm,orcracks.
Note:Ifyouseelightbrownorgrayontheinsulator,
theengineisoperatingproperly.Ablackcoatingon
theinsulatorusuallymeansthattheaircleanerisdirty.
Setthegapto0.7to0.8mm(0.028to0.031inch).
g206628
Figure48
34