Toro 74444 - Servicing the Spark Plugs

3.Applyathincoatofnewoiltotherubbergasketon
thereplacementlter(Figure38).
4.Installthereplacementoilltertothelteradapter,
turntheoillterclockwiseuntiltherubbergasket
contactsthelteradapter,thentightenthelteran
additional3/4turn(Figure38).
5.Fillthecrankcasewiththepropertypeofnewoil;
refertoServicingtheEngineOil.
6.Runtheengineforabout3minutes,stoptheengine,
andcheckforoilleaksaroundtheoillter.
7.Checktheengineoillevelandaddoilifneeded.
ServicingtheSparkPlugs
ServiceInterval/Specication
Ensurethattheairgapbetweenthecenterandside
electrodesiscorrectbeforeinstallingthesparkplug.
Useasparkplugwrenchforremovingandinstallingthe
sparkplugsandagappingtool/feelergaugetocheckand
adjusttheairgap.Installnewsparkplugsifnecessary.
Type:Champion®RCJ8YorequivalentAirGap:
0.030inch(0.75mm)
RemovingtheSparkPlugs
1.DisengagethePTOandsettheparkingbrake.
2.Stoptheengine,removethekey,andwaitforall
movingpartstostopbeforeleavingtheoperating
position.
3.Disconnectthewiresfromthesparkplugs
(Figure39).
Figure39
1.Spark-plugwire/sparkplug
4.Cleanaroundthesparkplugstopreventdirtfrom
fallingintotheengineandpotentiallycausing
damage.
5.Removethesparkplugsandthemetalwashers.
CheckingtheSparkPlugs
ServiceInterval:Every100hours
1.Lookatthecenterofthesparkplugs(Figure40).
Ifyouseelightbrownorgrayontheinsulator,the
engineisoperatingproperly.Ablackcoatingonthe
insulatorusuallymeansthattheaircleanerisdirty.
2.Ifneeded,cleanthesparkplugwithawirebrushto
removecarbondeposits.
Figure40
1.Centerelectrodeinsulator3.Airgap(nottoscale)
2.Sideelectrode
Important:Alwaysreplacethesparkplugs
whenithasablackcoating,wornelectrodes,
anoilylm,orcracks.
3.Checkthegapbetweenthecenterandsideelectrodes
(Figure40).Bendthesideelectrode(Figure40)if
thegapisnotcorrect.
InstallingtheSparkPlugs
1.Installthesparkplugsandthemetalwasher.Ensure
thattheairgapissetcorrectly.
2.Tightenthesparkplugsto16ft-lb(22N-m).
3.Connectthewirestothesparkplugs(Figure40).
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