Toro 74990 - Servicing the Spark Plugs

ServicingtheSparkPlugs
ServiceInterval:Every100hours
Makesurethattheairgapbetweenthecenter
electrodeandthesideelectrodeiscorrectbefore
installingeachsparkplug.Useaspark-plugwrench
forremovingandinstallingthesparkplugsanda
gappingtool/feelergaugetocheckandadjusttheair
gap.Installnewsparkplugsifnecessary.
Type:NGK
®
BPR4ESorequivalent
AirGap:0.76mm(0.030inch)
RemovingtheSparkPlug
1.Stoptheengine,removethekey,andwait
forallmovingpartstostopbeforeleavingthe
operatingposition.
2.DisengagethePTO,movethemotion-control
leverstotheneutral-lockedposition,andsetthe
parkingbrake.
3.Removethelefthandhydraulic-unitshroudin
theorderlistedinFigure55.
Note:Thisgivesyouaccesstothefrontspark
plug.
g029645
g009919
Figure55
1.Pullthistabouttothe
sideinthedirectionofthe
arrow
3.Pulltheshroudoffofthis
frametabinthedirection
ofthearrow
2.Pulltheshroudoffofthis
frametabinthedirection
ofthearrow
4.Shroud
4.Removethesparkplug.
g029646
g027478
Figure56
5.Installthelefthandhydraulic-unitshroud(Figure
55).
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