Operator's Manual

CheckingtheSparkPlug
1.Lookatthecenterofthesparkplug(Figure19).Ifyou
seelightbrownorgrayontheinsulator,theengineis
operatingproperly.Ablackcoatingontheinsulator
usuallymeansthattheaircleanerisdirty.
Important:Donotcleanthesparkplug.Always
replacethesparkplugwhenithasablackcoating,
wornelectrodes,anoilylm,orcracks.
Figure19
1.Centerelectrodeinsulator3.Airgap(nottoscale)
2.Sideelectrode
2.Checkthegapbetweenthecenterandsideelectrodes
(Figure19).Bendthesideelectrode(Figure19)ifthe
gapisnotcorrect.
InstallingtheSparkPlug
1.Threadthesparkplugintothesparkplughole.
2.Tightenthesparkplugto20ft-lb(27N-m).
3.Pushthewireontothesparkplug.
BeltMaintenance
CheckingtheDriveBelt
Tension
ServiceInterval:Every25hours
Note:Replacethebeltifitshowsanysignsofwear,cracks,
ordamage.
1.Shutofftheengineandwaitforallrotatingpartsto
stop.
2.Removebeltguardretainingscrews(Figure20).
g014510
1
2
3
4
5
4
Figure20
Yourmodelmayvary
1.Beltguard4.Bolt
2.Lockwasher5.Nut
3.Washer
3.Tocheckbelttension,gentlysqueezethebeltspans
together.Youshouldbeabletopushthebeltdown
about6to10mm(1/4to3/8inch)fromtheoriginal
position.
Important:Toextendthebeltlife,propertensionmust
bemaintained.Aloosebeltwillcauseexcessivecutting
wheelslippageandearlybeltfailure.Abeltthatistoo
tightcancausebearingandshaftfailure,andrapidbelt
wear.
17