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ServicingtheSparkPlug

ServiceInterval:Every200hours—Checkthespark

plug(s).

Every500hours—Replacethesparkplug(s).

Type:ChampionXC12YC

AirGap:0.76mm(0.03inch)

RemovingtheSparkPlug

1.Parkthemachineonalevelsurface,disengage

theblade-controlswitch(PTO),andengagethe

parkingbrake.

2.Shutofftheengine,removethekey,andwait

forallmovingpartstostopbeforeleavingthe

operatingposition.

3.Cleantheareaaroundthebaseoftheplug(s)to

keepdirtanddebrisoutoftheengine.

4.Locateandremovethesparkplug(s)asshown

inFigure43.

g027478

Figure43

CheckingtheSparkPlug

Important:Donotcleanthesparkplug(s).

Alwaysreplacethesparkplug(s)whenithasa

blackcoating,wornelectrodes,anoilylm,or

cracks.

Ifyouseelightbrownorgrayontheinsulator,the

engineisoperatingproperly.Ablackcoatingonthe

insulatorusuallymeanstheaircleanerisdirty.

Setthegapto0.76mm(0.03inch).

g206628

Figure44

InstallingtheSparkPlug

g028109

Figure45

Toro 74310 User Manual

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