RemovingtheSparkPlug
1.DisengagethePTO,movethemotioncontrollevers
totheneutrallockedpositionandsettheparking
brake.
2.Stoptheengine,removethekey,andwaitforall
movingpartstostopbeforeleavingtheoperating
position.
Figure32
Note:Duetothedeeprecessaroundthespark
plug,blowingoutthecavitywithcompressedair
isusuallythemosteffectivemethodforcleaning.
Thesparkplugismostaccessiblewhentheblower
housingisremovedforcleaning.
CheckingtheSparkPlug
Important:Nevercleanthesparkplug(s).Always
replacethesparkplug(s)whenithas:ablack
coating,wornelectrodes,anoilylm,orcracks.
Ifyouseelightbrownorgrayontheinsulator,the
engineisoperatingproperly.Ablackcoatingonthe
insulatorusuallymeanstheaircleanerisdirty.
Setthegapto0.030inches(0.76mm).
Figure33
InstallingtheSparkPlug
Tightenthesparkplug(s)to16ft-lb(22N-m).
Figure34
CleaningtheCoolingSystem
Cleantheairintakescreenfromgrassanddebrisbefore
eachuse.
1.Disengagethebladecontrolswitchandmovethe
controlleverstotheneutrallockedpositionand
applytheparkingbrake.
2.Stoptheengine,removethekey,andwaitforall
movingpartstostopbeforeleavingtheoperating
position.
3.Removetheairintakescreen,aircleanercover,and
fanhousing.
4.Cleandebrisandgrassfromtheparts.
5.Installtheairintakescreen,aircleanercover,and
fanhousing.
30