Toro 74399 - Servicing the Spark Plug

12.Installthereplacementoilltertotheadapter.
Turntheoillterclockwiseuntiltherubbergasket
contactsthepad,thentightenthelteranadditional
3/4to1turn(Figure34).Wipeupanyexcessoil
ontheframe.
13.Whenoilhasdrainedcompletely,installtheoildrain
plug.Tightentheplugto14N-m(125in-lb)torque.
Wipeupanyexcessoil(Figure33).
Note:Disposeoftheusedoilatarecyclingcenter.
14.Slowlypourapproximately80%ofthespeciedoil
intothellertube(Figure32).
15.Installtheoilllcap/dipstick(Figure32).
16.Checktheoillevel(Figure32);refertoChecking
theOilLevel.
17.Slowlyaddadditionaloiltobringittothefullmark.
18.Installtheoilllcap/dipstickandscrewtight
(Figure32).
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,movethe
motioncontrolsoutwardtotheparkposition,stop
theengine,andremovethekey.
2.Beforeremovingthesparkplug(s),cleanthearea
aroundthebaseoftheplugtokeepdirtanddebris
outoftheengine.
Pullthewireoffofthesparkplug(s)(Figure35).
3.Cleanaroundthesparkplug(s)topreventdirt
fromfallingintotheengineandpotentiallycausing
damage.Removethesparkplug(s)andmetalwasher.
Figure35
1.Sparkplugandwirelocations
CheckingtheSparkPlug
1.Lookatthecenterofthesparkplug(Figure36).
Ifyouseelightbrownorgrayontheinsulator,the
engineisoperatingproperly.Ablackcoatingonthe
insulatorusuallymeanstheaircleanerisdirty.
Important:Nevercleanthesparkplug.Always
replacethesparkplugwhenithasablack
coating,wornelectrodes,anoilylm,orcracks.
2.Checkthegapbetweenthecenterandsideelectrodes
(Figure36).Bendthesideelectrode(Figure36)if
thegapisnotcorrect.
Figure36
1.Centerelectrodeinsulator3.Airgap(nottoscale)
2.Sideelectrode
InstallingtheSparkPlug
1.Installthesparkplug.Makesurethattheairgapis
setcorrectly.
2.Tightenthesparkplugto18-22ft-lb(25-29N-m).
3.Pushthewireontothesparkplug(Figure35).
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