CheckingtheSparkPlug
Important:Donotcleanthesparkplug(s).Always
replacethesparkplug(s)whenithas:ablackcoating,
wornelectrodes,anoilylm,orcracks.
Ifyouseelightbrownorgrayontheinsulator,theengineis
operatingproperly.Ablackcoatingontheinsulatorusually
meanstheaircleanerisdirty.
Setthegapto0.76mm(0.03inch).
Figure55
InstallingtheSparkPlug
Tightenthesparkplug(s)to24.4to29.8N∙m(18to22ft-lb).
Figure56
CheckingtheSparkArrester
ForaModelwithaSparkArrester
ServiceInterval:Every50hours
WARNING
Hotexhaustsystemcomponentsmayignite
gasolinevaporsevenaftertheengineisstopped.
Hotparticlesexhaustedduringengineoperation
mayigniteammablematerials.Firemayresultin
personalinjuryorpropertydamage.
Donotfuelorrunengineunlesssparkarresteris
installed.
1.Stopengine,waitforallmovingpartstostop,remove
thekey,andengagetheparkingbrake.
2.Waitformufertocool.
3.Ifthereareanybreaksinthescreenorweldsare
observed,replacethearrester.
4.Ifpluggingofthescreenisobserved,removethe
arresterandshakelooseparticlesoutofthearrester,
andcleanscreenitwithawirebrush(soakinsolvent
ifnecessary).
5.Installarresteronexhaustoutlet.
40