Toro 74833 - Servicing the Spark Plug; Cleaning the Blower Housing

Note:Ensuretheoilltergaskettouchestheengine
andthenanextra3/4turniscompleted.
3.Fillthecrankcasewiththepropertypeofnewoil;
refertoChangingtheOil.
ServicingtheSparkPlug
ServiceInterval:Every200hours—Checkspark
plug(s)conditionandgap.
Every500hours—Replacethespark
plug(s).
ThesparkplugisRFIcompliant.Equivalentalternate
brandplugscanalsobeused.Sparkplugreplacementis
recommendedat500hours.
Type:ChampionXC12YC(orequivalent)
AirGap:0.030inch(0.76mm)
RemovingtheSparkPlug
1.Disengagethebladecontrolswitch(PTO),movethe
motioncontrolleverstotheneutrallockposition
andsettheparkingbrake.
2.Stoptheengine,removethekey,andwaitforall
movingpartstostopbeforeleavingtheoperating
position.
G010230
Figure38
CheckingtheSparkPlug
Important:Nevercleanthesparkplug(s).Always
replacethesparkplug(s)whenithas:ablack
coating,wornelectrodes,anoilylm,orcracks.
Ifyouseelightbrownorgrayontheinsulator,the
engineisoperatingproperly.Ablackcoatingonthe
insulatorusuallymeanstheaircleanerisdirty.
Setthegapto0.030inches(0.76mm).
G008794
1
2
Figure39
InstallingtheSparkPlug
Tightenthesparkplugto18-22ft-lb(25-29N-m).
18-22ft-lb
25-29N-m
G010339
Figure40
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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