Figure32
1.Centerelectrodeinsulator3.Airgap(nottoscale)
2.Sideelectrode
InstallingtheSparkPlug
1.Installthesparkplug.Makesurethattheairgapis
setcorrectly.
2.Tightenthesparkplugto18-22ft-lb(25-29N-m).
3.Pushthewireontothesparkplug(
Figure31).
CleaningtheBlowerHousing
ServiceInterval:Beforeeachuseordaily—Checkair
intakeandcoolingareas,cleanas
necessary.
Every100hours—Cleantheblower
housing(moreoftenunderextremely
dusty,dirtyconditions).
Toensurepropercooling,makesurethegrassscreen,
coolingns,andotherexternalsurfacesoftheengine
arekeptcleanatalltimes.
Cleanthecoolingnsandexternalsurfacesasnecessary.
Makesurethecoolingshroudsarereinstalled.
Important:Operatingtheenginewithablocked
grassscreen,dirtyorpluggedcoolingns,and/or
coolingshroudsremoved,willcauseenginedamage
duetooverheating.
FuelSystem
Maintenance
DANGER
Incertainconditions,gasolineisextremely
ammableandhighlyexplosive.Areorexplosion
fromgasolinecanburnyouandothersandcan
damageproperty.
•Performanyfuelrelatedmaintenancewhenthe
engineiscold.Dothisoutdoorsinanopenarea.
Wipeupanygasolinethatspills.
•Neversmokewhendraininggasoline,andstay
awayfromanopenameorwhereasparkmay
ignitethegasolinefumes.
ReplacingtheIn-lineFuel
Filter
ServiceInterval:Every100hours—Replacethein-line
fuellter
Neverinstalladirtylterifitisremovedfromthefuel
line.
1.Parkthemachineonalevelsurfaceanddisengage
thebladecontrolswitch.
2.Movethemotioncontrolleversoutwardtothe
parkposition,stoptheengine,removethekey,and
waitforallmovingpartstostopbeforeleavingthe
operatingposition.
3.Locatethefuellteronthesideoftheengineas
shownin
Figure33.