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• Replace with Champion CJ7Y spark
plug and tighten with a 3/4 inch socket
wrench (10-12 ft-lbs). Spark plug gap
should be .025 in.
Reinstall the spark plug boot.
Reinstall the cylinder cover and 3
screws (15-20 fn-lbs).
Scrsws,_...__ Cy[{nder
Spsrk_'4, _€_,.. _,_ Cover
CHAIN REPLACEMENT
CAUTION: Wear protective groves
when handling chain, The chain is
sharp and can cut you even when it is
not moving.
it is normal for a new chain to stretch dur-
ing the first I5 minutes ofoperation.You
should recheck your chaintensionfie-
quentlyand adjustthe chaintension as
required.See Chain Tensionsection.
• Move On/Stop switch to the Stop
position.
• Replace the old chain when it be-
comes worn or damaged.
• Use only the Low-Kickback replace-
ment chain specified in the repair
parts list. The correct replacement bar
and chain is also specified on a decal
located on the chain saw.
• See your Sears Service Center to re-
place and sharpen in'dividualcutters
on your chain.
• Remove bar clamp nuts.
• Remove bar clamp.
• Remove the old chain.
Bar
Clamp
\
Bar
ClampNuts
* Turn adjusting screw by hand coun-
terclockwise until adjusting pin just
touches the stop.
• Slide guide bar behind clutch drum
until guide bar stops against clutch
drum sprocket,
• Carefully remove new chain from
package. Hold chain with the drive
links as shown.
Cutters Dep_ Gauge
Ddve Links
* Place,chain over and behind clutch.
• Fit bottom of drive tinks between teeth
in sprocket nose.
° Fit chain drive links intobar groove.
. Pull guide bar forward untilchain fs
snug in guide bar groove.
* Now, install bar clamp making sure
the adjusting pin is positioned in the
lower hole in the guide bar.
Lower
Hole
Adiusting Guide Bar
Pin
this point.
Install bar clampnuts andfingertight-
en only. Donot tighten anyfurther at
BarC]arnpNuts
CHAIN ADJUSTMENT
See "Chain Tension" in Maintenance
section.
14
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