Toro TX 427 - Spark Plug Service and Installation; Spark Plug Service, Inspection, and Installation

ServicingtheSparkPlug(s)
ServiceInterval:Every200hours—Checkthespark
plug(s).
Every500hours—Replacethesparkplug.
Ensurethattheairgapbetweenthecenterandside
electrodesiscorrectbeforeinstallingeachsparkplug.
Useaspark-plugwrenchforremovingandinstalling
eachsparkplugandagappingtool/feelergaugeto
checkandadjusttheairgap.Installnewsparkplugs
ifnecessary.
Type:ChampionXC12YCorequivalent.
AirGap:0.75mm(0.03inch)
RemovingtheSparkPlug
1.Parkthemachineonalevelsurface,engage
theparkingbrake(ifequipped),andlowerthe
loaderarms.
2.Shutofftheengine,removethekey,andallow
theenginetocool.
3.Cleantheareaaroundthebaseoftheplug(s)to
keepdirtanddebrisoutoftheengine.
4.Removethesparkplug(s)asshowninFigure
39.
g027478
Figure39
CheckingtheSparkPlug
Important:Donotcleanthesparkplug(s).
Alwaysreplacethesparkplug(s)whenithasa
blackcoating,wornelectrodes,anoilylm,or
cracks.
Ifyouseelightbrownorgrayontheinsulator,the
engineisoperatingproperly.Ablackcoatingonthe
insulatorusuallymeanstheaircleanerisdirty.
Setthegapto0.75mm(0.03inch).
g206628
Figure40
InstallingtheSparkPlug
g028109
Figure41
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