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5. Using screwdriver, roll chain
around guide bar to ensure all links
are in bar groove.
6. Lift up top of guide bar to check for
sag. Release tip of guide bar, then
turn adjusting screw clockwise until
sag does not exist.
7. While lifting tip of guide bar, tighten
bar clamp nuts with a wrench.
8. Use screwdriver to move chain
around guide bar.
9. If chain does not rotate, it is too
tight. Slightly loosen bar clamp
nuts and loosen chain by turning
the adjusting screw counterclock-
wise. Retighten bar clamp nuts.
10. 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 SHARPENING in
the SERVICEAND ADJUSTMENTS sec-
tion.
CHECK GUIDE BAR
Conditions which require guide bar
maintenance:
• Saw cuts to one side or at an angle.
• Saw has to be forced through the
cut.
• Inadequate supply of oil to the bar
and chain.
Check the condition of the guide bar be-
fore each use and each time the chain
is sharpened. A worn guide bar will
damage the chain and make cutting diffi-
cult.
After each use, with unit disconnected
from power source, clean all sawdust
from the guide bar and sprocket hole.
To maintain guide bar:
• Disconnect the chain saw from the
power source.
• Loosen and remove bar clamp nuts
and bar clamp. Remove bar and
chain from saw.
• Clean the oil holes and bar groove
after each 5 hours of operation.
Remove Sawdust From
e Bar Groove
Sprocket Hole
o_._ Oil Holes o_"_
• Burring of guide bar rails is a normal
process of rail wear. Remove these
burrs with a flat file.
• When rail top is uneven, use a flat
file to restore square edges and
sides.
_ _rT_ File Rail Edges_ r] r]
I'1
and Sides I U I
Square I I
Worn Groove Correct Groove
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 nec-
essary, contact your Sears Service
Center.
LUBRICATION
Bar Oil
Fill Cap
• Check bar and chain oil before use
and every 15 minutes while operat-
ing the saw. See GUIDE BAR AND
CHAIN OIL under the OPERATION
section.
INSPECT AND CLEAN UNIT AND
LABELS
• After each use, inspect complete unit
for loose or damaged parts. Clean
the unit and labels using a damp
cloth with a mild detergent.
• Wipe off the unit and labels with a
clean dry cloth.
13
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