Toro 74942 - Servicing the Spark Plug

ServicingtheSparkPlug
ServiceInterval:Every200hours—Check,cleanandregap
thesparkplug.
Makesuretheairgapbetweenthecenterandsideelectrodes
iscorrectbeforeinstallingthesparkplug.Useasparkplug
wrenchforremovingandinstallingthesparkplug(s)anda
gappingtool/feelergaugetocheckandadjusttheairgap.
Installanewsparkplug(s)ifnecessary.
Type:Champion
®
XC12YC,Champion
®
Platinum3071or
equivalent
AirGap:0.76mm(0.030inch)
RemovingtheSparkPlug
1.Stoptheengine,removethekey,andwaitforallmoving
partstostopbeforeleavingtheoperatingposition.
2.DisengagethePTO,movethemotion-controlleversto
theneutral-lockedpositionandsettheparkingbrake.
3.Removethelefthandhydraulicunitshroudintheorder
listedwithFigure51.Thisgivesyouaccesstothefront
sparkplug.
g024214
Figure51
1.Pullthistabouttothe
sideinthedirectionofthe
arrow
3.Pulltheshroudoffofthis
frametabinthedirection
ofthearrow
2.Pulltheshroudoffofthis
frametabinthedirection
ofthearrow
4.Shroud
4.Removethesparkplug.
g024215
B
A
g027478
Figure52
5.Installthelefthandhydraulicunitshroud(Figure51).
CheckingtheSparkPlug
Important:Replacethesparkplug(s)whenithas:a
blackcoating,wornelectrodes,anoilylm,cracksor
reuseisquestionable.
Ifyouseelightbrownorgrayontheinsulator,theengineis
operatingproperly.Ablackcoatingontheinsulatorusually
meanstheaircleanerisdirty.
Setthegapto0.76mm(0.030inch).
B
A
g027479
Figure53
37