Toro 74922 - Servicing the Spark Plug

ServicingtheSparkPlug
ServiceInterval:Every100hours
Makesuretheairgapbetweenthecenterandsideelectrodes
iscorrectbeforeinstallingthesparkplug.Useasparkplug
wrenchforremovingandinstallingthesparkplug(s)anda
gappingtool/feelergaugetocheckandadjusttheairgap.
Installanewsparkplug(s)ifnecessary.
Type:Champion
®
RC12YCorequivalent
AirGap:0.76mm(0.03inch)
RemovingtheSparkPlug
1.Stoptheengine,removethekey,andwaitforallmoving
partstostopbeforeleavingtheoperatingposition.
2.DisengagethePTO,movethemotion-controlleversto
theneutral-lockedposition,andsettheparkingbrake.
3.Removethelefthandhydraulic-unitshroudinthe
orderlistedinFigure53.
Note:Thisgivesyouaccesstothefrontsparkplug.
Figure53
1.Pullthistabouttothe
sideinthedirectionofthe
arrow
3.Pulltheshroudoffofthis
frametabinthedirection
ofthearrow
2.Pulltheshroudoffofthis
frametabinthedirection
ofthearrow
4.Shroud
4.Removethesparkplug.
G008803
B
A
g027478
Figure54
5.Installthelefthandhydraulic-unitshroud(Figure53).
CheckingtheSparkPlug
Important:Donotcleanthesparkplug(s).Always
replacethesparkplug(s)whenithas:ablackcoating,
wornelectrodes,anoilylm,orcracks.
Ifyouseelightbrownorgrayontheinsulator,theengineis
operatingproperly.Ablackcoatingontheinsulatorusually
meanstheaircleanerisdirty.
Setthegapto0.76mm(0.03inch).
B
A
g027479
Figure55
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