Toro Z Master 74958 - Checking the Spark Arrester

5.Installthelefthydraulicunitshroud(Figure51).
CheckingtheSparkPlug
Important:Replacethesparkplug(s)whenit
has:ablackcoating,wornelectrodes,anoilylm,
cracksorreuseisquestionable.
Ifyouseelightbrownorgrayontheinsulator,the
engineisoperatingproperly.Ablackcoatingonthe
insulatorusuallymeanstheaircleanerisdirty.
Setthegapto0.76mm(0.030inches).
g027479
Figure53
InstallingtheSparkPlug
Tightenthesparkplug(s)to24.4to29.8N·m(18to
22ft-lb).
g027735
Figure54
CheckingtheSpark
Arrester
ForaModelwithaSparkArrester
ServiceInterval:Every50hours
WARNING
Hotexhaustsystemcomponentsmayignite
gasolinevaporsevenyoushutofftheengine.
Hotparticlesexhaustedduringengine
operationmayigniteammablematerials.
Firemayresultinpersonalinjuryorproperty
damage.
Donotrefuelorruntheengineunlessaspark
arresterisinstalled.
1.Stopengine,waitforallmovingpartstostop,
andremovekey.Engageparkingbrake.
2.Waitformufertocool.
3.Ifthereareanybreaksinthescreenorwelds,
replacethearrester.
4.Ifthescreenisplugged,removethearrester
andshakethelooseparticlesoutofthearrester
andcleanthescreenwithawirebrush(soakit
insolventifnecessary).Installthearresteron
theexhaustoutlet.
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