User Guide

Maintenance
Figure24
1.Sparkplugandwirelocation
CheckingtheSparkPlug
1.Lookatthecenterofthesparkplug(Figure25).
Ifyouseelightbrownorgrayontheinsulator,the
engineisoperatingproperly.Ablackcoatingon
theinsulatorusuallymeanstheaircleanerisdirty.
Important:Nevercleanthesparkplug.
Alwaysreplacethesparkplugwhenithasa
blackcoating,wornelectrodes,anoilylm,
orcracks.
2.Checkthegapbetweenthecenterandside
electrodes(
Figure25).Bendthesideelectrodeif
thegapisnotcorrect.
Figure25
1.Sideelectrode3.Airgap(nottoscale)
2.Centerelectrode
insulator
InstallingtheSparkPlug
1.Installthesparkplug.Makesurethattheairgap
issetcorrectly.
2.Tightenthesparkplugto15ft-lb(20N-m).
3.Pushthewireontothesparkplug(
Figure24).
CleaningtheBlowerHousing
ServiceInterval:Every100hours/Yearly
(whichevercomesrst)
Moreoftenunderdirty
conditions.
Toensurepropercooling,makesurethegrassscreen,
coolingns,andotherexternalsurfacesoftheengine
arekeptcleanatalltimes.
1.Removetheblowerhousingandanyothercooling
shrouds.
2.Cleanthecoolingnsandexternalsurfacesas
necessary.
3.Makesurethecoolingshroudsarereinstalled
Important:Operatingtheenginewithablocked
grassscreen,dirtyorpluggedcoolingns,
and/orcoolingshroudsremoved,willcause
enginedamageduetooverheating.
FuelSystemMaintenance
ReplacingtheFuelFilter
ServiceInterval:Every100hours/Yearly
(whichevercomesrst)
DANGER
Incertainconditions,gasolineisextremely
ammableandhighlyexplosive.Areor
explosionfromgasolinecanburnyouandothers
andcandamageproperty.
•Performanyfuelrelatedmaintenancewhen
theengineiscold.Dothisoutdoorsinan
openarea.Wipeupanygasolinethatspills.
•Neversmokewhendraininggasoline,and
stayawayfromanopenameorwherea
sparkmayignitethegasolinefumes.
Neverinstalladirtylterifitisremovedfromthe
fuelline.
1.Parkthemachineonalevelsurfaceanddisengage
thebladecontrolswitch.
2.Movethemotioncontrolleversoutwardtothe
neutralposition,engageparkingbrake,stopthe
engine,removethekey,andwaitforallmoving
partstostopbeforeleavingtheoperatingposition.
3.Thefuellterisinthefuellinebetweenthetank
andengine.
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