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z_
,_LWARNING:
Always stop unit
and disconnect
spark plug wire (or
disconnect
powerhead
from power
source)
before performing
mainte-
nance, service, or adjustments
except
for carburetor
adjustments.
CHAIN SHARPENING
Chain sharpening
is a complicated
task
that requires special tools. We recom-
mended you refer chain sharpening 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 becomes
worn or damaged.
Use only the Low-
Kickback replacement
chain specified in
the repair parts list.
TO REPLACE
CHAIN:
1. Move ON/OFF switch to tile OFF
position and disconnect
spark plug
(or disconnect
powerhead
from
power source).
2.
Remove bar clamp nut.
3.
Remove bar clamp.
4. Turn adjusting screw by hand
counterclockwise
until adjusting
pin just touches
the stop.
5.
Slide guide bar behind sprocket
until guide bar stops against
sprocket.
6.
Remove the old chain.
7.
Carefully
remove new chain from
package.
Hold chain with the drive
links as shown.
Tip of
Bar
J
CUTTERS MUST FACE IF'
/
DIRECTION
QF ROTATION
Cutters
Depth Gauge
Drive Links
8.
Place chain over sprocket,
fitting
the drive links in the sprocket.
9.
Fit bottom of 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 chain is
snug in guide bar groove.
Ensure
all drive links are in the bar groove.
12. Now, install bar clamp making sure
the adjusting
pin is positioned
in
the lower hole in the guide bar.
Lower Hole
/
@
Adj_
S
Guide Bar
13. Install bar clamp nut and finger
tighten only. Do not tighten any fur-
ther at this point.
Proceed to the
CHAIN ADJUSTMENT section.
CHAIN ADJUSTMENT
See CHECK CHAIN TENSION in MAiN-
TENANCE section.
13
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