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TROUBLE CAUSE REMEDY
Chain does
not move
when trigger
switch is
engaged
.
1. Chain tension incorrect.
2. Guide bar rails pinched.
3. Trigger switch failure.
4. Circuit breaker tripped/
fuse failure.
1. See “Check Chain Tension” in
Maintenance section.
2. Repair or replace.
3. Contact an authorized service
dealer.
4. Reset circuit breaker or replace
fuse.
Chain clat-
ters or cuts
roughly.
1. Chain tension incorrect.
2. Cutters damaged.
3. Chain worn.
4. Cutters dull, improperly
sharpened, or d epth
gauges too high.
5. Sprocket worn.
1. See “Check Chain Tension” in
Maintenance Section.
2. Contact an authorized service
dealer.
3. Resharpen or replace chain.
4. See “Chain Sharpening” in
Service and Adjustments section.
5. Contact an authorized service
dealer.
1. Chain cutter tops not
filed flat.
2. Guide bar burred or
bent; rails uneven.
Chain stops
during cut.
1. See “Chain Sharpening” in
Service and Adjustments section.
2. Repair o r replace guide bar.
Oil inade-
quate for bar
and chain
lubrication.
1. Oil tank empty.
2. Oil ou tlet clogged.
3. Guide bar oil hole
blocked.
1. Fill oil tank.
2. Contact an authorized service
dealer.
3. Remove bar and clean.
Chain cuts
at an angle.
WARNING: Always stop unit and disconnect from the power source be-
fore performing all of the recommended remedies below except remedies
that require unit to be operating.
1. Cutters damaged on
one side.
2. Chain dull on one side.
3. Guide bar bent or worn.
1. See “Chain Sharpening” in
Service and Adjustments section.
2. See “Chain Sharpening” in
Service and Adjustments section.
3. Replace guide bar.
TROUBLESHOOTING TABLE