Filter
Top Products
1. Removethesparkplugbootanduse a sparkplugwrenchto
removetheplug.See Figure17.
2. Visuallyinspectthesparkplug.Discardthesparkplugifthereis
apparentwear,orif the insulatoris crackedor chipped.Cleanthe
sparkplugwitha wirebrushifit isto be reused.
3. Measurethe pluggapwitha feelergauge.Correctas necessary
bybendingsideelectrode.SeeFigure18.Thegapshouldbeset
to0.030in.
4. Checkthatthe sparkplugwasherisingoodconditionandthread
thesparkplugin by handtopreventcrossthreading.
5. Afterthesparkplugisseated,tightenwitha sparkplugwrenchto
compressthewasher.
NOTE:Wheninstallinga newsparkplug,tighten1/2turnafterthe
sparkplugseatstocompressthewasher.Whenreinstallinga used
sparkplug,tighten1/8-1/4turnafterthesparkplugseatsto compress
thewasher.
Neverusegasolineorlowflashpointsolventsforcleaningtheair
ceanereement. A fre orexposoncou d resut.
Servicing the Air Cleaner
Theair cleanerpreventsdamagingdirt, dust,etc.,fromenteringthe
carburetorand beingforcedintothe engineandisimportanttoengine
lifeandperformance.Neverrunthe enginewithoutan aircleaner
completelyassembled.Checktheaircleanerbeforeeach use.
Paperfilterscannotbecleanedandmustbe replacedoncea year
orevery 100operatinghours;moreoftenifusedin extremelydusty
conditions.
1. Loosenscrewsthatholdthe airfiltercover.SeeFigure19.
2. Openthe coverand removethepre-cleanerandairfilter.
3. Washthe pre-cleanerandallowtodry.
4. Discardold airfilter.
5. Installnewairfilterandwashedpre-cleaner.
6. Closethe coverandtightenthescrews.
NOTE:Ifthe filteristorn ordamagedin anyway,replaceit.
Donotsprayenginewithwatertoclean becausewatercould
contaminatefuel. Usinga gardenhoseorpressurewashingequip-
mentcanalsoforcewaterintothemuffleropening.Waterthat passes
throughthemufflercanenterthe cylinder,causingdamage.
Accumulationofdebrisaroundmufflercouldcausea fire.Inspectand
cleanbeforeeveryuse.
Cleaning the Engine
If theenginehasbeenrunning,allowitto coolforat leasthalfan hour
beforecleaning.Periodicallyremovedirt build-upfromtheengine.
Cleanaroundthe muffler.Cleanwitha brushor compressedair.
Boot
Figure17
,Electrode
0.02-0.03 in.
===_1_====0.60=0.80 mm
Figure18
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E
Air Filter
Cover
Figure19
Pre+cleaner
Filter
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19