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TROUBLESHOOTING TABLE - Continued
TROUBLE
Engine
smokes
excessively.
Engine runs
hot.
CAUSE
1. Choke partially on.
2. Fuel mixture incorrect.
3. Air filter dirty.
4. High Speed Mixture
requires adjustment.
5. Crankcase leak.
1. Fuel mixture incorrect.
REMEDY
1. Adjust choke.
2. Empty fuel tank and refill with
correct fuel mixture.
3. Clean or replace air filter.
4. Contact Sears Service (see back cover).
5. Contact Sears Service (see back cover).
1. See "Fueling Engine" in the Operation
section.
2. Replace with correct plug.
3. Contact Sears Service (see back cover).
4. Contact Sears Service (see back cover).
5. Clean spark arresting screen.
2. Spark plug incorrect.
3. High Speed Mixture
set too lean.
4. Exhaust ports or muf-
fler outlets plugged.
5. Carbon build-up on
spark arresting screen.
6. Starter housing dirty
7. None of the above.
1. Oil tank empty.
2. Oil pump or oil filter
clogged.
3. Guide bar oil hole
blocked.
1. Idle speed requires
adjustment.
2. Clutch requires repair.
1. Chain tension too
tight.
2. Carburetor requires
adjustment.
3. Guide bar rails
pinched.
4. Clutch slipping.
5. Chain brake engaged.
1. Chain tension incorrect.
6. Clean starter housing area.
7. Contact Sears Service (see back cover).
Oil inadequate 1. Fill oil tank.
for bar and 2. Contact Sears Service (see back cover).
chain
lubrication. 3. Remove bar and clean.
Chain moves at
idle speed.
2. Cutters damaged.
3. Chain worn.
4. Cutters dull, improperly
sharpened, or depth
gauges too high.
5. Sprocket worn.
6. Chain installed
backwards.
1. Chain cutter tops not
filed flat.
2. Guide bar burred or
bent; rails uneven.
3. Clutch slipping.
1. Cutters damaged on
one side.
2. Chain dull on one side.
Chain does not
move when en-
gine is acceler-
ated.
Chain clatters
or cuts roughly.
Chain stops
within the cut.
Chain cuts at
an angle.
3. Guide bar bent or worn.
1.
2.
1.
2.
3.
4.
5.
1.
2.
3.
4.
See "Carburetor Adjustment" in the
Service and Adjustments Section.
Contact Sears Service (see back cover).
See "Check Chain Tension" in the
Maintenance Section.
Contact Sears Service (see back cover).
Repair or replace.
Contact Sears Service (see back cover).
Disengage chain brake.
See "Check Chain Tension" in the
Maintenance Section.
Contact Sears Service (see back cover).
Resharpen or replace chain.
See "Chain Sharpening" in the
Service and Adjustments Section.
5. Contact Sears Service (see back cover).
6. Install chain in right direction.
1.
2.
3.
1.
2.
3.
See "Chain Sharpening" in the
Service and Adjustments Section.
Repair or replace guide bar.
Contact Sears Service (see back cover).
See "Chain Sharpening" in the
Service and Adjustments Section.
See "Chain Sharpening" in the
Service and Adjustments Section.
Replace guide bar.
If situations occur which are not covered in this manual, use care and good
judgement. If you need assistance, contact Sears Service or the CUSTOMER
ASSISTANCE HELPLINE at 1-800-235-5878.
20
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