Figure26
1.Centerelectrodeinsulator3.Airgap(nottoscale)
2.Sideelectrode
Important:
Do not clean the spar k plug .
Always
replacethesparkplugwhenithasablack
coating,wornelectrodes,anoilylm,orcracks.
2.Checkthegapbetweenthecenterandsideelectrodes
(Figure26)andbendthesideelectrodeifthegap
isnotcorrect.
InstallingtheSparkPlug
1.Installthesparkplugandmetalwasher.Ensurethat
theairgapissetcorrectly.
2.Tightenthesparkplugto15ft-lb(20.4N-m).
3.Connectthewiretothesparkplug(Figure25).
4.Closethehood.
FuelSystem
Maintenance
DrainingtheFuelTank
Drainthefueltankwhenyouwillnotbeusingthe
machineformorethan30days.
DANGER
Incertainconditions,gasolineisextremely
ammableandhighlyexplosive.Areorexplosion
fromgasolinecanburnyouandothersandcan
damageproperty.
•Draingasolinefromthefueltankwhenthe
engineiscold.Dothisoutdoorsinanopenarea.
Wipeupanygasolinethatspills.
•Neversmokewhendraininggasoline,andstay
awayfromanopenameorwhereasparkmay
ignitethegasolinefumes.
1.Parkthemachinesothattheleftfrontsideisslightly
lowerthantherightsidetoensurethatthefueltank
drainscompletely.
2.Disengagetheblades(PTO).
3.Settheparkingbrake.
4.Stoptheengineandwaitforallmovingpartstostop.
5.Removetheignitionkey.
6.Closethefuelshut-offvalvelocatedunderthefront
ofthefueltank.
7.Loosenthehoseclampatthefuellterandslideit
upthefuellineawayfromthefuellter(
Figure27).
Figure27
1.Hoseclamp
3.Fuellter
2.Fuelline
8.Pullthefuellineoffthefuellter(Figure27).
25