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Cylinder
Cover
Screws
Cylinder
Cover
INSPECT MUFFLER AND SPARK
ARRESTOR SCREEN
Asthe unitis used, carbondeposits
build uponthe mufflerand spark
arrestor screen,and mustbe removed
toavoidcreatinga firehazardor affect-
ingengine performance.
Replacethe spark arrestor screen if
breaks occur.
,__,,.,__/Mu filerDiffuser
Spark
Arrestor
P_="-,Y I],(_/_'f Y / Screen
1___,/_ Cover
Body _"=_ Muffler ''_.
Cover
CLEANING THE SPARK
ARRESTOR SCREEN
Cleaningis requiredevery 25 hours of
operationorannually,whichevercomes
first.
• Loosenand removethe2 mufflercov-
erscrews.
• Removethemufflercover(cover
snapsoffmufflerbody).
, Removemufflerdiffuserandspark
arrestorscreenassembly.Noticethe
orientationofthesepartsforreassem-
bling.
• Cleanthesparkarrestorscreenwitha
wirebrush.Replacescreenif breaks
arefound.
, Replaceany brokenorcrackedmuf-
flerparts.
. Reinstalldiffuserandsparkarrestor
screenassemblywithroundholes
facingupand towardsmufflercover.
• Reinstallmufflercoverand 2 screws
(7-8 ff-lbs.).
REPLACE SPARK PLUG .
The sparkplugshouldbe replaced
eachyeartoensuretheenginestarts
easierand runs better.Ignitiontimingis
fixedand nonadjustable.
, Loosenthe3 screwsonthecylinder
cover. _,_ _
• Removethe cylindercover.
Pulloffthesparkplugboot.
Removesparkplugfrom cylinderand
discard.
• ReplacewithChampionRCJ7Y spark
plugandtightenwitha 3/4inchsocket
wrench(10-12 ff-tbs), Sparkpluggap
shouldbe .025 in.
• Reinstallthesparkplugboot.
° Reinstallthe cylindercoverand 3
screws(t5-20 in-lbs).
Screws
Cylinder
Cover
Plug
Boot
Spark
Plug
CHAIN REPLACEMENT
CAUTION:Wear protective gloves
when handling chain. The chain is
sharp and can cut you even when it is
notmoving,
It is normal for a new chain to stret_;h
during the first 30 minutes of operation.
You should recheck your chain tension
frequently and adjust the chain tension
as required. See Chain Tension sec-
tion.
• Move On!Stopswitchto theStop
position.
ReplaceDe oldchainwhen itbe-
i comes_qm.er damaged.
UseonlytheI_ow-Kickback replace-
mentchainspecifiedinthe repair
partslist.The corre_ replacementbar
andchainisalsospecifiedona decal
locatedon thechainsaw.
, See yourSearsServiceCenterto re-
placeand sharpenindividualcutters
onyourchain.
1,1
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