Toro TimeCutter SS 4200 - Spark Plug Condition Check and Installation; Blower Housing Cleaning

G014537
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Figure32
1.Sparkplugandwirelocation
CheckingtheSparkPlug
1.Lookatthecenterofthesparkplug(Figure33).
Ifyouseelightbrownorgrayontheinsulator,the
engineisoperatingproperly.Ablackcoatingonthe
insulatorusuallymeanstheaircleanerisdirty.
Important:Nevercleanthesparkplug.Always
replacethesparkplugwhenithasablack
coating,wornelectrodes,anoilylm,orcracks.
2.Checkthegapbetweenthecenterandsideelectrodes
(
Figure33).Bendthesideelectrode(Figure33)if
thegapisnotcorrect.
Figure33
1.Centerelectrodeinsulator3.Airgap(nottoscale)
2.Sideelectrode
InstallingtheSparkPlug
1.Installthesparkplug.Makesurethattheairgapis
setcorrectly.
2.Tightenthesparkplugto30ft-lb(41N-m).
3.Pushthewireontothesparkplug(
Figure32).
CleaningtheBlowerHousing
Toensurepropercooling,makesurethegrassscreen,
coolingns,andotherexternalsurfacesoftheengine
arekeptcleanatalltimes.
Annuallyorevery100hoursofoperation(moreoften
underextremelydusty,dirtyconditions),removethe
blowerhousingandanyothercoolingshrouds.Clean
thecoolingnsandexternalsurfacesasnecessary.Make
surethecoolingshroudsarereinstalled.Torquethe
blowerhousingscrewsto5.5ft-lb(7.5N-m).
Important:Operatingtheenginewithablocked
grassscreen,dirtyorpluggedcoolingns,and/or
coolingshroudsremoved,willcauseenginedamage
duetooverheating.
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