Use and Care Manual

Note:Ensurethattheoil-ltergaskettouchesthe
engineandthenanextra3/4turniscompleted.
3.Fillthecrankcasewiththepropertypeofnewoil;refer
toServicingtheEngineOil(page28).
ServicingtheSparkPlug
ServiceInterval:Every100hours/Yearly(whichevercomes
rst)—Checkthesparkplug(s).
Every200hours/Every2years(whichevercomes
rst)—Replacethesparkplug(s).
Makesuretheairgapbetweenthecenterandsideelectrodes
iscorrectbeforeinstallingthesparkplug.Useaspark-plug
wrenchforremovingandinstallingthesparkplug(s)anda
gappingtool/feelergaugetocheckandadjusttheairgap.
Installanewsparkplug(s)ifnecessary.
Type:ChampionRN9YC,BoschF7RTC,NGKBPR7ES
orequivalent
Airgap:0.76mm(0.03inch)
RemovingtheSparkPlug
1.DisengagethePTOandensuretheparkingbrakeis
engaged.
2.Stoptheengine,removethekey,andwaitforallmoving
partstostopbeforeleavingtheoperatingposition.
B
A
g027478
Figure35
Note:Duetothedeeprecessaroundthesparkplug,
blowingoutthecavitywithcompressedairisusually
themosteffectivemethodforcleaning.Thesparkplug
ismostaccessiblewhentheblowerhousingisremoved
forcleaning.
CheckingtheSparkPlug
Important:Donotcleanthesparkplug(s).Always
replacethesparkplug(s)whenithas:ablackcoating,
wornelectrodes,anoilylm,orcracks.
Ifyouseelightbrownorgrayontheinsulator,theengineis
operatingproperly.Ablackcoatingontheinsulatorusually
meanstheaircleanerisdirty.
Setthegapto0.76mm(0.030inch).
31