McCulloch M3816 Instruction Manual page 15

TROUBLESHOOTING TABLE
WARNING:
the recommended remedies below except remedies that require operation of the unit.
TROUBLE CAUSE
Engine will not
1. Ignition switch off.
start or will run
2. Engine flooded.
only a few
seconds after
3. Fuel tank empty.
starting.
4. Spark plug not firing.
5. Fuel not reaching
1. Idle speed requires
Engine will
not idle
2. Carburetor requires
properly.
Engine will not 1. Air filter dirty.
accelerate, 2. Spark plug fouled.
lacks power, 3. Chain brake engaged.
or dies under 4. Carburetor requires
a load.
Engine 1. Too much oil mixed with
smokes
excessively.
1. Idle speed requires
Chain moves
at idle speed.
2. Clutch requires repair.
Always stop unit and disconnect spark plug before performing all of
carburetor.
adjustment.
adjustment.
adjustment.
gasoline.
adjustment.
REMEDY
1. Move ignition switch to ON.
2. See "Difficult Starting" in
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.
1. See "Carburetor Adjustment" in the
Service and Adjustments Section.
2. Contact an authorized service dealer.
1. Clean or replace air filter.
2. Clean or replace plug and regap.
3. Disengage chain brake.
4. Contact an authorized service dealer.
1. Empty fuel tank and refill with
correct fuel mixture.
1. See "Carburetor Adjustment" in the
Service and Adjustments Section.
2. Contact an authorized service dealer.
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