Sears C944.414460 User Manual
Page 15
15
1. Use the screwdriver end of the
chain adjustment tool (bar tool) to
move chain around guide bar to
ensure kinks do not exist. The
chain should rotate freely.
Chain Adjustment
Tool
(Bar Tool)
Guide
Bar
Chain Brake
Nuts
Adjusting
Screw
2. Loosen chain brake nuts until they
are finger tight against the chain
brake.
3. Turn adjusting screw clockwise
until chain solidly contacts bottom
of guide bar rail.
Adjusting screw
Chain Brake Nuts
4. Using bar tool, roll chain around
guide bar to ensure all links are in
bar groove.
5. Lift up tip of guide bar to check for
sag. Release tip of guide bar, then
turn adjusting screw
1
/
4
turn clock-
wise. Repeat until sag does not
exist.
Adjusting Screw --
1
/
4
Turn
6. While lifting tip of guide bar, tighten
chain brake nuts securely with the
bar tool.
Chain Brake
Nuts
7. Use the screwdriver end of the bar
tool to move chain around guide
bar.
8. If chain does not rotate, it is too
tight. Slightly loosen chain brake
nuts and loosen chain by turning
the adjusting screw counterclock-
wise. Retighten chain brake nuts.
9. If chain is too loose, it will sag be-
low the guide bar.
DO NOT
operate
the saw if the chain is loose.
WARNING:
If the saw is operated
with a loose chain, the chain could
jump off the guide bar and result in se-
rious injury.
CHECK CHAIN SHARPNESS
A sharp chain makes wood chips. A
dull chain makes a sawdust powder
and cuts slowly. See
CHAIN SHARP-
ENING
in the
SERVICE AND ADJUST-
MENTS
section.
CHECK GUIDE BAR
Conditions which require guide bar
maintenance:
S
Saw cuts to one side or at an angle.
S
Saw has to be forced through the cut.
S
Inadequate supply of oil to bar/chain.
Check the condition of guide bar each
time chain is sharpened. A worn guide
bar will damage the chain and make
cutting difficult.
After each use, ensure
ON/STOP
switch is in the
STOP
position, then
clean all sawdust from the guide bar
and sprocket hole.
To maintain guide bar:
S
Move
ON/STOP
switch to
STOP.
S
Loosen and remove chain brake
nuts and chain brake. Remove bar
and chain from saw.
S
Clean the oil holes and bar groove
after each 5 hours of operation.
Remove Sawdust From
Guide Bar Groove
Oil Holes
S
Burring of guide bar rails is a normal
process of rail wear. Remove these
burrs with a flat file.
S
When rail top is uneven, use a flat file
to restore square edges and sides.
Correct Groove
Worn Groove
File Rail Edges
and Sides
Square
Replace guide bar when the groove is
worn, the guide bar is bent or cracked,
or when excess heating or burring of the
rails occurs. If replacement is necessary,
use only the guide bar specified for your
saw in the repair parts list or on the de-
cal located on the chain saw.
CHECK FUEL MIXTURE LEVEL
S
See
FUELING ENGINE
under the
OP-
ERATION
section.