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FUEL SYSTEM
Empty the fuel system before storage
for 30 days or longer. Drain the gas
tank, start the engine and let it run until
the fuel lines and carburetor are empty.
Use fresh fuel next season.
Under FUELING ENGINE in the OPERA-
TION section of this manual, see mes-
sage labeled IMPORTANT regarding
the use of gasohol in your chain saw.
Fuel stabilizer is an acceptable alter-
native in minimizing the formation of
fuel gum deposits during storage. Add
stabilizer to the gasoline in the fuel
tank or fuel storage container.
Follow the mix instructions found on
stabilizer containers. Run engine at
least 3 minutes after adding stabilizer.
Craftsman 40:1,2-cycle engine oil (air
cooled) is blended with fuel stabilizer. If
you do not use this oil, you can add a
fuel stabilizer to your fuel tank.
ENGINE
• Remove spark plug and pour 1 tea-
spoon of 40:1,2-cycle engine oil (air
cooled) through the spark plug open-
ing. Slowly pull the starter rope 8 to
10 times to distribute oil.
• Replace spark plug with new one of
recommended type and heat range.
• Clean air filter.
• Check entire unit for loose screws,
nuts, and bolts. Replace any dam-
aged, broken, or worn parts.
• At the beginning of the next season,
use only fresh fuel having the proper
gasoline to oil ratio.
OTHER
• Do not store gasoline from one sea-
son to another.
• Replace your gasoline can if it starts
to rust.
TROUBLESHOOTING TABLE
,_ WARNING: Always stop unit and disconnect spark plug before perform-
ing all of the recommended remedies below except remedies that require
operation of the unit.
TROUBLE CAUSE
Engine wilt not
start or will run
only a few
seconds after
starting.
Engine will
not idle
properly.
Engine will not
accelerate,
lacks power.
or dies under
a load.
1. ON/STOP switch in
STOP position.
2. Engine flooded.
3. Fuel tank empty.
4. Spark plug not firing.
5. Fuel not reaching
carburetor.
6. Carburetor requires
adjustment.
7. None of the above.
1. Idle speed set too high
or too low.
2. Low Speed Mixture
requires adjustment.
3. Crankshaft seals worn.
4. Compression low.
5. None of the above.
1. Air filter dirty.
2. Spark plug fouled.
3. Carburetor requires
adjustment.
4. Exhaust ports or muf-
fler outlets plugged.
5. Compression low.
6. Chain brake engaged.
7. None of the above.
REMEDY
1. Move ON/STOP switch to ON.
2. See "Difficult Starting" in the
Operation Section.
3. Fill tank with correct fuel mixture.
4. Install new spark plug.
5. Check for dirty fuel filter; replace.
Check for kinked or split fuel line;
repair or replace.
6. Contact Sears Service (see back cover).
7. Contact Sears Service (see back cover).
1. See "Carburetor Adjustment" in the
Service and Adjustments Section.
2. Contact Sears Service (see back cover).
3. Contact Sears Service (see back
4. Contact Sears Service (see back
5. Contact Sears Service (see back
1. Clean or replace air filter.
2. Clean or replace plug and regap.
3. Contact Sears Service (see back
4. Contact Sears Service (see back
5. Contact Sears Service (see back
6. Disengage chain brake.
7. Contact Sears Service (see back
cover).
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19
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