FUEL SYSTEM
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 5 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
_ll 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 fi_ter dirty.
2. Spark plug fouled.
3. Carburetor
requires
adjustment.
4. Exhaust
ports or muf-
tier 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
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