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CLEANING
AND MAINTENANCE
NOTICE:
Below are instructions
for
servicing
your
chain saw. Any ser-
vicing not mentioned
below
should
be done
by an authorized
service
center.
CLEANING SAW BODY
4Hk WARNING: Unplug chain saw from
power source before servicing. Severe
injury or death could occur from electri-
cal shock or body contact with moving
chain.
4HLWARNING: Cutting edges on chain
are sharp. Use protective gloves when
handling
chain.
WARNING: When cleaning saw
body,
• do not submerge saw in any liq-
uids
• do not use products that contain
ammonia,
chlorine,
or abrasives
• do not use chlorinated
cleaning
solvents,
carbon
tetrachloride,
kerosene,
or gasoline
Keep saw body clean. Use a soft cloth dampened
with a mild soap and water mixture. Wipe saw body
to clean.
CARE
OF GUIDE
BAR
Uneven bar weal causes most guide bar problems.
Incorrect sharpening of chain cutter and depth
gauge settings often cause this. When bar wears
unevenly, it widens guide bar groove (see Figure
20). This causes chain clatter and rivet popping.
Saw will not cut straight. Replace guide bar if
this occurs.
Inspect guide bar belbre sharpening chain. A worn
or &unagedguide bguis unsafe. A worn or damaged
guide bar will &image chain. It will also make cut-
ting harder.
Guide Bar Groove
e _r
Normal Guide Bar
Guide Bar With Uneven Wear
Figure 20- Guide Bar Cross Section Showing
Uneven Bar Wear
Normal
Guide
Bar Maintenance
1. Remove guide bar from chain saw.
2. Remove sawdust fiom guide bar groove peri-
odically. Use putty knife or wire (see Figure
21).
3. Clean oil slots after each day of use.
4. Remove burrs fiom sides of guide bar. Use
flat file to make side edges square.
Replace guide bar when
• bar is bent or cracked
• inside groove of bar is badly worn
Note: When replacing guide bar, seeRu)lacemem
Parts and Accessories for proper bar.
SHARPENING SAW CHAIN
A
WARNING: Unplug chain saw from
power source before servicing. Severe
injury or death could occur from electri-
cal shock or body contact with moving
chain.
WARNING: Cutting edges on chain
are sharp. Use protective gloves when
handling
chain.
Keep chain sharp. Your saw will cut laster and
more safely. A dull chain will cause undue sprock-
et, guide bar, chain, and motor wear. If you must
force chain into wood and cutting
creates
only
sawdust with few large chips, chain is dull.
Burr
/
Guide Bar
Putty Knife
Figure 21 - Guide Bar Maintenance
18
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