Toro 74969 - Checking the Spark Arrester

5.Installthelefthydraulic-unitshroud(Figure62).
CheckingtheSparkPlug
Important:Donotcleanthesparkplug(s).
Alwaysreplacethesparkplug(s)whenithasa
blackcoating,wornelectrodes,anoilylm,or
cracks.
Ifyouseelightbrownorgrayontheinsulator,the
engineisoperatingproperly.Ablackcoatingonthe
insulatorusuallymeanstheaircleanerisdirty.
Setthegapto0.76mm(0.03inch).
g206628
Figure64
InstallingtheSparkPlug
g028109
Figure65
CheckingtheSpark
Arrester
ForMachineswithaSpark
Arrester
ServiceInterval:Every50hours
WARNING
Hotexhaust-systemcomponentsmayignite
fuelvaporsevenafteryoushutofftheengine.
Hotparticlesexhaustedduringengine
operationmayigniteammablematerials,
resultinginpersonalinjuryorproperty
damage.
Donotrefuelorruntheengineunlessthe
sparkarresterisinstalled.
1.Parkthemachineonalevelsurface,disengage
thePTO,andengagetheparkingbrake.
2.Shutofftheengine,removethekey,andwait
forallmovingpartstostopbeforeleavingthe
operatingposition.
3.Waitforthemufertocool.
4.Ifyouseeanybreaksinthescreenorwelds,
replacethearrester.
5.Ifthescreenisplugged,removethearrester,
shakelooseparticlesoutofthearrester,and
cleanthescreenwithawirebrush(soakthe
screeninsolventifnecessary).
6.Installthearresterontheexhaustoutlet.
46