Operator's Manual

2.Ifthemeasuredairgapisnotwithinthespeciedair
gaprange,dothefollowing:
A.Ifthegapistoosmall,carefullybendtheside
electrodeawayfromthecenterelectrodeuntilthe
gapbetweentheelectrodesiswithinthemeasured
airgaprange.
B.Ifthegapistoolarge,carefullybendtheside
electrodetowardfromthecenterelectrodeuntil
thegapbetweentheelectrodesiswithinthe
measuredairgaprange.
InstallingtheSparkPlug
Important:Ensurethattheairgapbetweentheside
andcenterelectrodesarecorrectbeforeinstallingthe
sparkplug.
1.Threadthesparkplugclockwiseintothesparkplug
holebyhand.
Note:Avoidcrossthreadingthesparkplugwiththe
threadsofthesparkplughole
2.Rotatesparkplugclockwiseusinga20mm(13/16
inch)sparkplugwrenchuntiltheplugandsealing
washerareseated.
3.Tightentheplugasfollows:
•Wheninstallinganin-servicesparkplug,tighten
thepluganadditional1/8–1/4turn.
•Wheninstallinganewsparkplug,tightentheplug
anadditional1/2turn.
4.Installthesparkplugwirepushingthewireontothe
terminaloftheplug.
ServicingtheSparkArrester
ServiceInterval:Every100hours/Every6months
(whichevercomesrst)—Cleanthespark
arrester.
CleaningtheSparkArrester
1.Removethesparkarrestorasfollows:
A.Removethetwo8mmnutsandremovethe
muferfromtheengineexhaustport(Figure46).
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Figure46
MuferandSparkArrester
1.Exhaustdeector
7.Exhaust-pipegasket
2.Muferprotector8.Stud
3.6mmscrew
9.Sparkarrester
4.Mufer
10.5mmscrew
5.Exhaustpipe11.Exhaustport
6.Nut12.4mmscrew
Note:Retaintheexhaust-pipegasketforthe
sparkarresterinstallation.
B.Removethethree4mmscrewsfromtheexhaust
deector,andremovethedeectorfromthe
muferprotector(Figure46).
C.Removethe6mmscrewandfour5mmscrews
fromthemuferprotectorandremovethe
muferprotectorfromthemufer(Figure46).
D.Removethe5mmscrewsfromthesparkarrester,
andremovethesparkarresterfromthemufer
(
Figure46).
2.Useabrushtoremovecarbondepositsfromthespark
arresterscreen.Replacethesparkarresterifithas
breaksorholes(Figure47).
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