McCulloch CS 50S - TROUBLESHOOTING

TROUBLESHOOTING
TROUBLESHOOTING TABLE
a WARNING: Always stop unit and disconnect spark plug before performing all of the recommended
remedies below except remedies that require operation of the unit.
TROUBLE CAUSE REMEDY
Engine will not start or will run only
a few seconds after starting.
1. Ignition switch off.
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3. Fuel tank empty.
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5. Fuel not reaching carburettor.
1. Move ignition switch to ON.
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STARTING AND STOPPING
Section.
3. Fill tank with correct fuel
mixture.
4. Install new spark plug.
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replace.
Check for kinked or split fuel
line; repair or replace.
Engine will not idle properly.
1. Idle speed requires
adjustment.
2. Carburettor requires
adjustment.
1. See “Carburettor Adjustment”
in the MAINTENANCE Section.
2. Contact an authorized service
dealer.
Engine will not accelerate, lacks
power, or dies under a load.
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2. Spark plug fouled.
3. Chain brake engaged.
4. Carburettor requires
adjustment.
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2. Clean or replace plug and
regap.
3. Disengage chain brake.
4. Contact an authorized service
dealer.
Engine smokes excessively.
1. Too much oil mixed with
gasoline.
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correct fuel mixture.
Chain moves at idle speed. 1. Idle speed requires
adjustment.
2. Clutch requires repair.
1. See “Carburettor Adjustment”
in the MAINTENANCE Section.
2. Contact an authorized service
dealer.
&OXWFKFRYHUZLOOQRW¿WSURSHUO\ 1. Chain brake is engaged. 1. See “Resetting the
Chain Brake” in the
TROUBLESHOOTING section.
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