Operation Manual

6.Fillthecrankcasewiththepropertypeofnewengine
oil;refertoCheckingtheEngineOilLevel.
ServicingtheSparkPlug
ServiceInterval:Every25hours—Checkthesparkplug.
Every100hours—Replacethesparkplug.
UseaChampionRC12YCorequivalentsparkplug.
Ensurethattheairgapbetweenthecenterandsideelectrodes
is0.030inch(0.76mm)beforeinstallingthesparkplug.Use
asparkplugwrenchforremovingandinstallingthespark
plugandagappingtoolorfeelergaugetocheckandadjust
theairgap.
RemovingtheSparkPlug
1.Disengagetheblades(PTO).
2.Settheparkingbrake.
3.Stoptheengineandwaitforallmovingpartstostop.
4.Removetheignitionkey.
5.Openthehood.
6.Disconnectthewirefromthesparkplug(Figure28).
Figure28
1.Sparkplugwire
7.Cleanaroundthesparkplugtopreventdirtfromfalling
intotheengineandpotentiallycausingdamage.
8.Removethesparkplugandthemetalwasher(Figure
28).
CheckingtheSparkPlug
1.Lookatthecenterofthesparkplug(Figure29).Ifyou
seelightbrownorgrayontheinsulator,theengineis
operatingproperly.Ablackcoatingontheinsulator
usuallymeansthattheaircleanerisdirty.
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