Toro Pro Force 44554 - Spark Plug Service; Checking and Installing Spark Plugs; Engine Cleaning; Cleaning Engine Screen and Oil Cooler

ServicingtheSparkPlugs
Ensurethattheairgapbetweenthecenterandside
electrodesiscorrectbeforeinstallingthesparkplugs.
Useasparkplugwrenchforremovingandinstalling
thesparkplugsandagappingtool/feelergaugeto
checkandadjusttheairgap.Installnewsparksplugs
ifnecessary.
Type:Champion®RC12YC,Champion®Platinum
3071orequivalent
AirGap:0.76mm(0.030inch)
CheckingtheSparkPlugs
ServiceInterval:Every200hours
1.Lookatthecenterofthesparkplugs(Figure20).
Ifyouseelightbrownorgrayontheinsulator,
theengineisoperatingproperly.Ablackcoating
ontheinsulatorusuallymeansthattheair
cleanerisdirty.
g001470
Figure20
1.Centerelectrodeinsulator3.Airgap(nottoscale)
2.Sideelectrode
Important:Alwaysreplaceasparkplug
whenithasablackcoating,wornelectrodes,
anoilylm,orcracks.
2.Checkthegapbetweenthecenterandside
electrodes(Figure20).Bendthesideelectrode
(Figure20)ifthegapisnotcorrect.
RemovingtheSparkPlugs
1.Shutofftheengine,removethekey,andwait
forallmovingpartstostopbeforeleavingthe
operatingposition.
2.Disconnectthewiresfromthesparkplugs
(Figure21).
g002358
Figure21
1.Spark-plugwire2.Sparkplug
3.Cleanaroundthesparkplugstopreventdirt
fromfallingintotheengineandpotentially
causingdamage.
4.Removethesparkplugsandthemetalwashers.
InstallingtheSparkPlugs
1.Installthesparkplugsandthemetalwasher.
Ensurethattheairgapissetcorrectly.
2.Tightenthesparkplugsto24.4to29.8N-m(18
to22ft-lb).
3.Connectthewirestothesparkplugs(Figure20).
CleaningtheEngineScreen
andtheOilCooler
ServiceInterval:Beforeeachuseordaily
Beforeeachuse,checkandcleantheenginescreen
andoilcooler.Removeanybuildupofgrass,dirtor
otherdebrisfromtheoilcoolerandenginescreen
(Figure22).
g002355
Figure22
1.Enginescreen
2.Oilcooler
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