Toro 74917 - Servicing the Spark Plug

ServicingtheSparkPlug
ServiceInterval:Every100hours
Makesuretheairgapbetweenthecenterandside
electrodesiscorrectbeforeinstallingthesparkplug.
Useasparkplugwrenchforremovingandinstalling
thesparkplug(s)andagappingtool/feelergaugeto
checkandadjusttheairgap.Installanewsparkplug(s)
ifnecessary.
Note:Therearedifferentsparkplugsforthe23hp,
27hp,29hp,and34hpengines.Ensurethecorrectspark
plugisused.
Typefor23hp,27hp,and29hpEngines:NGK
®
BPR4ESorequivalent
Typefor34hpEngines:NGK
®
BPR5ESorequivalent
AirGap:0.030inch(0.75mm)
RemovingtheSparkPlug
1.Stoptheengine,removethekey,andwaitforall
movingpartstostopbeforeleavingtheoperating
position.
2.DisengagethePTO,movethemotioncontrollevers
totheneutrallockedpositionandsettheparking
brake.
3.Removethelefthandhydraulicunitshroudinthe
orderlistedwithFigure50.Thisgivesyouaccess
tothefrontsparkplug.
Figure50
1.Pullthistabouttothe
sideinthedirectionofthe
arrow
3.Pulltheshroudoffofthis
frametabinthedirection
ofthearrow
2.Pulltheshroudoffofthis
frametabinthedirection
ofthearrow
4.Shroud
4.Removethesparkplug.
G008803
Figure51
5.Installthelefthandhydraulicunitshroud(Figure50).
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