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Muffler Diffuser
Spark
Arresting
Muffler
Cover
Screws
CLEANING
THE SPARK
ARRESTING
SCREEN
Cleaning
is required every 25 hours of
operation
or annually, whichever
comes first.
1. Loosen and remove the 2 muffler
cover screws.
2.
Remove the muffler cover (cover
snaps off muffler body).
3.
Remove muffler diffuser and spark
arresting
screen assembly.
Notice
the orientation
of these parts for
reassembling.
4.
Clean the spark arresting
screen
with a wire brush. Replace
screen
if breaks are found.
5.
Replace any broken or cracked
muffler pads.
6.
Reinstall diffuser and spark arrest-
ing screen assembly
with round
holes facing up.
7.
Reinstall muffler cover and 2
screws. Tighten
securely.
REPLACE
SPARK PLUG
The spark plug should be replaced
each year to ensure the engine starts
easier and runs better. Ignition timing
is fixed and nonadjustable.
1. Loosen 3 screws on cylinder
cover.
2.
Remove the cylinder cover.
3.
Pull off the spark plug boot.
4.
Remove spark plug from cylinder
and discard.
5.
Replace with Champion
CJ-7Y
spark plug and tighten securely
with a 3/4 inch socket wrench.
Spark plug gap should
be 0.025
inch.
6.
Reinstall the spark plug boot.
7.
Reinstall the cylinder cover and 3
screws. Tighten securely.
Screws_
Cylinder
Cover
Plug Boot
Plug
REPLACE
FUEL FILTER
To replace fuel filter, drain your unit by
running
it dry of fuel
Remove
fuel cap
and its connected
retainer from tank.
Pull filter from tank and remove from
line. Replace and reassemble.
aWARNING:
Disconnect
the spark
plug before performing
maintenance,
service, or adjustments
except for car-
buretor adjustments.
CHAIN SHARPENING
Chain sharpening
requires
special
tools. You can purchase sharpening
tools at Sears or go to a professional
chain sharpener.
CHAIN REPLACEMENT
_WARNING:
Wear protective
gloves 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
during the first 15 minutes of operation.
You should
recheck your chain tension
frequently
and adjust the chain tension
as required.
See CHAIN TENSION sec-
tion.
Replace the old chain when it be-
comes worn or damaged.
Use only
the Low-Kickback
replacement
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
individual
cutters
on your chain.
TO REPLACE
CHAIN:
1. Move ON/STOP switch to the STOP
position.
2.
Remove chain brake nuts.
3.
Remove chain brake.
4.
Remove the old chain.
16
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