Toro ProCore - Spark Plug Maintenance; Checking Spark Plug Condition; Removing and Installing Spark Plugs

4.Allowtheltermaterialtoabsorbthenewoilfor
1to2minutes.
5.Applyathincoatofnewoiltotherubbergasketon
thereplacementlter(Figure49).
6.Installthereplacementoilltertothelteradapter,
turntheoillterclockwiseuntiltherubbergasket
contactsthelteradapter,thentightenthelteran
additional2/3to1turn(Figure49).
7.Fillthecrankcasewiththepropertypeofnewoil;
refertoServicingtheEngineOil.
8.Runtheengineforabout3minutes,stoptheengine,
andcheckforoilleaksaroundtheoillter.
9.Checktheengineoillevelandaddoilifneeded.
ServicingtheSparkPlugs
Ensurethattheairgapbetweenthecenterandside
electrodesiscorrectbeforeinstallingthesparkplug.
Useasparkplugwrenchforremovingandinstallingthe
sparkplugsandagappingtool/feelergaugetocheckand
adjusttheairgap.Installanewsparkplugsifnecessary.
Type:Champion®RC12YC,Champion®Platinum
3071orequivalent
AirGap:0.030inch(0.76mm)
CheckingtheSparkPlugs
ServiceInterval:Every200hours
1.Lookatthecenterofthesparkplugs(Figure50).
Ifyouseelightbrownorgrayontheinsulator,the
engineisoperatingproperly.Ablackcoatingonthe
insulatorusuallymeansthattheaircleanerisdirty.
Figure50
1.Centerelectrodeinsulator3.Airgap(nottoscale)
2.Sideelectrode
Important:Alwaysreplacethesparkplugs
whenithasablackcoating,wornelectrodes,
anoilylm,orcracks.
2.Checkthegapbetweenthecenterandsideelectrodes
(Figure50).Bendthesideelectrode(Figure50)if
thegapisnotcorrect.
RemovingtheSparkPlugs
1.Stoptheengine,removethekey,andwaitforall
movingpartstostopbeforeleavingtheoperating
position.
2.Disconnectthewiresfromthesparkplugs
(Figure51).
Figure51
1.Spark-plugwire2.Sparkplug
3.Cleanaroundthesparkplugstopreventdirtfrom
fallingintotheengineandpotentiallycausing
damage.
4.Removethesparkplugsandthemetalwashers.
InstallingtheSparkPlugs
1.Installthesparkplugsandthemetalwasher.Ensure
thattheairgapissetcorrectly.
2.Tightenthesparkplugsto18to22ft-lb(24.4to
29.8N-m).
3.Connectthewirestothesparkplugs(Figure50).
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