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£J,
aWARNING:
Disconnect
the spark
plug before performing
maintenance,
ser-
vice or adjustments,
except for carburetor
adjustments.
CHAIN
SHARPENING
Chain sharpening
is a complicated
task that
requires special tools. We recommend
that
you refer chain sharpening
to a professional
chain sharpener.
CHAIN
REPLACEMENT
_I_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
CHECK CHAIN TENSION section.
Replace the old chain when it becomes worn
or damaged.
Use only the Low Kickback re-
placement
chain specified
in the repair parts
list, The correct replacement
bar and chain is
also specified
on a decal located
on the
chain saw.
TO REPLACE
CHAIN:
1. Move ON/STOP
switch
to the STOP
position.
2. Remove chain brake nuts,
3. Remove chain brake.
Brake
Chain Brake
_
Nuts
4. Turn adjusting
screw on bar counter-
clockwise to move the tensioning
rack as
far as it will go toward the front of the bar.
Tensioning Rack_/_
5. Slide guide bar behind clutch drum until
guide
bar stops against
clutch
drum
sprocket.
6. Remove the old chain.
7. Carefully remove the new chain from the
package.
Hold chain with the drive links
as shown.
Cutters
Depth Gauge
Drive Links
8.
Place chain over and behind clutch, fit-
ting the drive links in the clutch drum
sprocket.
9.
Fit the bottom of the drive links between
the teeth in the sprocket in the nose of the
guide bar.
10. Fit chain drive links into bar groove.
11. Pull guide bar forward until the chain is
snug inthe guide bar groove.
Ensure all
drive links are in the bar groove.
12. Install the chain brake.
13. install chain brake nuts; finger tighten only.
Do not tighten any further at this point. Pro-
ceed to CHAIN ADJUSTMENT.
CHAIN
ADJUSTMENT
See CHECK CHAIN TENSION in the MAIN-
TENANCE
section.
CARBURETOR
ADJUSTMENTS
WARNING:
The chain will be moving
during most of this procedure. Wear your pro-
tective equipment and observe all safety pre-
cautions. The chain must not move at idle
speed.
The carburetor
has been carefully set at the
factory. Adjustments
may be necessary
if
you notice any of the following conditions:
• Chain moves at idle. See IDLE SPEED-T
adjusting
procedure.
• Saw will not idle. See IDLE SPEED-T
ad-
justing procedure.
Idle Speed-T
Allow engine to idle. If the chain moves, idle
is too fast. If the engine stalls, idle is too slow.
Adjust speed until engine runs without chain
movement (idle too fast) or stalling (idle too
slow). The idle speed screw is located in the
area above the primer bulb and is labeled T.
• Turn idle speed screw (T) clockwise to in-
crease engine speed.
• Turn idle speed screw (T) counterclock-
wise to decrease engine speed.
12
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