Exmark QSS708GEM42200 - Servicing the Spark Plug-Kohler Engine

Maintenance
RemovingtheSparkPlug-Exmark
708ccengine
1.DisengagethePTOandensuretheparkingbrake
isengaged.
2.Stoptheengine,removethekey,andwaitforall
movingpartstostopbeforeleavingtheoperating
position.
3.Disconnectthewirefromthesparkplug.
B
A
g027478
Figure42
Note:Duetothedeeprecessaroundthespark
plug,blowingoutthecavitywithcompressedair
isusuallythemosteffectivemethodforcleaning.
Thesparkplugismostaccessiblewhentheblower
housingisremovedforcleaning.
CheckingtheSparkPlug–Exmark
708ccEngine
1.Inspectthesparkplug
Note:Ifyouseelightbrownorgrayonthe
insulator,theengineisoperatingproperly.A
blackcoatingontheinsulatorusuallymeansthe
aircleanerisdirty.
Important:DoNotcleanthesparkplug(s).
Alwaysreplacethesparkplug(s)whenithas:
ablackcoating,wornelectrodes,anoilylm,
orcracks.
B
A
g027479
Figure43
1.Centerelectrode
insulator
3.Airgap(nottoscale)
2.Sideelectrode
2.Checkthegapbetweenthecenterandside
electrodes.
3.Setthegapto0.030inch(.76mm).
InstallingtheSparkPlug–Exmark
708ccEngine
1.Installthesparkplug.Makesurethattheairgap
issetcorrectly.
2.Tightenthesparkplugto18.5–22.1ft-lb(25–30
N-m).
B
A
25-30 N-m
18.5-22.1 ft-lb
g027960
C
D
Figure44
3.Pushthewireontothesparkplug.
ServicingtheSpark
Plug-KohlerEngine
ServiceInterval:Every200hours
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