Toro GrandStand 74534 - Spark Plug Maintenance; Spark Plug Servicing and Checking

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Figure44
Note:Ensuretheoilltergaskettouchestheengine
andthenanextra3/4turniscompleted.
4.Fillthecrankcasewiththepropertypeofnewoil;refer
toChangingtheOil.
ServicingtheSparkPlug
ServiceInterval:Every100hours
Makesuretheairgapbetweenthecenterandsideelectrodes
iscorrectbeforeinstallingthesparkplug.Useasparkplug
wrenchforremovingandinstallingthesparkplug(s)anda
gappingtool/feelergaugetocheckandadjusttheairgap.
Installanewsparkplug(s)ifnecessary.
TypeforallEngines:NGK
®
BPR4ESorequivalent
AirGap:0.75mm(0.030inch)
RemovingtheSparkPlug
1.DisengagethePTO,movethemotioncontrolleversto
theneutrallockedpositionandsettheparkingbrake.
2.Stoptheengine,removethekey,andwaitforallmoving
partstostopbeforeleavingtheoperatingposition.
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Figure45
CheckingtheSparkPlug
Important:Nevercleanthesparkplug(s).Always
replacethesparkplug(s)whenithas:ablackcoating,
wornelectrodes,anoilylm,orcracks.
Ifyouseelightbrownorgrayontheinsulator,theengineis
operatingproperly.Ablackcoatingontheinsulatorusually
meanstheaircleanerisdirty.
Setthegapto0.75mm(0.030inches).
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