Operator's Manual

CheckingtheSparkPlug(s)
Important:Donotcleanthesparkplug(s).
Alwaysreplacethesparkplug(s)whenithas:a
blackcoating,wornelectrodes,anoilylm,or
cracks.
Ifyouseelightbrownorgrayontheinsulator,the
engineisoperatingproperly.Ablackcoatingonthe
insulatorusuallymeanstheaircleanerisdirty.
Setthegapto0.75mm(0.03inch).
g206628
Figure36
InstallingtheSparkPlug(s)
g027661
Figure37
FuelSystem
Maintenance
DANGER
Incertainconditions,fuelisextremely
ammableandhighlyexplosive.Areor
explosionfromfuelcanburnyouandothers
andcandamageproperty.
RefertoFuelSafety(page15)foracomplete
listoffuelrelatedprecautions.
DrainingtheFuelTank
1.Parkthemachineonalevelsurface,engagethe
parkingbrake,andlowertheboom.
2.Shutofftheengineandremovethekey.
3.Turnthefuel-shutoffvalvetotheclosedposition
(Figure38).
g007830
Figure38
1.Fuel-shutoffvalve
4.Squeezetheendsofthehoseclamponthe
enginesideofthevalvetogetherandslideitup
thefuellineawayfromthevalve(Figure38).
5.Pullthefuellineoffthevalve(Figure38).
6.Openthefuel-shutoffvalveandallowthefuelto
drainintoafuelcanordrainpan.
Note:Ifdesired,youcanreplacethefuellter
atthistime;refertoReplacingtheFuelFilter
(page31).
7.Installthefuellineontothefuel-shutoffvalve.
Slidethehoseclampclosetothevalvetosecure
thefuelline.
8.Wipeupanyspilledfuel.
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