Toro 74390 - Servicing the Spark Plug

4.Slowlypourapproximately80%ofthespeciedoil
intothellertubeandslowlyaddtheadditionaloilto
bringittotheFullmark().
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Figure33
ChangingtheEngineOilFilter
ServiceInterval:Every200hours—Changetheoillter.
(moreoftenindusty,dirtyconditions)
Note:Changetheengineoilltermorefrequentlywhen
operatingconditionsareextremelydustyorsandy.
1.Draintheoilfromtheengine;refertoChangingthe
EngineOil.
2.Changetheengineoillter().
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Figure34
Note:Ensuretheoilltergaskettouchestheengine
andthenanextra3/4turniscompleted.
3.Fillthecrankcasewiththepropertypeofnewoil;refer
toChangingtheOil.
ServicingtheSparkPlug
ServiceInterval:Every100hours—Checkthesparkplug(s).
Makesuretheairgapbetweenthecenterandsideelectrodes
iscorrectbeforeinstallingthesparkplug.Useasparkplug
wrenchforremovingandinstallingthesparkplug(s)anda
gappingtool/feelergaugetocheckandadjusttheairgap.
Installanewsparkplug(s)ifnecessary.
Type:NGKBPR4ES(orequivalent)
AirGap:0.030inch(0.76mm)
RemovingtheSparkPlug
1.DisengagethePTO,movethemotioncontrolleversto
theneutrallockedpositionandsettheparkingbrake.
2.Stoptheengine,removethekey,andwaitforallmoving
partstostopbeforeleavingtheoperatingposition.
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