Figure47
Note:Ensuretheoil-ltergaskettouchestheengine,
andthenanextra3/4turniscompleted.
4.Fillthecrankcasewiththepropertypeofnewoil;refer
toChangingtheEngineOil(page34).
ServicingtheSparkPlug
ServiceInterval:Every100hours
Makesuretheairgapbetweenthecenterandsideelectrodes
iscorrectbeforeinstallingthesparkplug.
Useasparkplugwrenchforremovingandinstallingthespark
plug(s)andagappingtool/feelergaugetocheckandadjust
theairgap.Installanewsparkplug(s)ifnecessary.
TypeforallEngines:NGK
®
BPR4ESorequivalent
AirGap:0.75mm(0.03inch)
RemovingtheSparkPlug
1.DisengagethePTO,movethemotion-controlleversto
theneutral-lockedposition,andsettheparkingbrake.
2.Stoptheengine,removethekey,andwaitforallmoving
partstostopbeforeleavingtheoperatingposition.
3.RemovethesparkplugasshowninFigure48.
Figure48
CheckingtheSparkPlug
Important:Donotcleanthesparkplug(s).Always
replacethesparkplug(s)whenithasablackcoating,
wornelectrodes,anoilylm,orcracks.
Ifyouseelightbrownorgrayontheinsulator,theengineis
operatingproperly.Ablackcoatingontheinsulatorusually
meanstheaircleanerisdirty.
Setthegapto0.75mm(0.03inch).
Figure49
36