Troubleshooting - Chicago Electric 66753 Set Up, Operating, And Servicing Instructions

engine will not
start
follow all safety precautions whenever diagnosing or servicing the
equipment or engine.
SKU 66753 for technical questions, please call 1-800-444-3353.

troubleshooting

FUEL RELATED:
1. No fuel in tank or fuel valve closed.
2. Choke not in start position,
especially with cold engine.
3. Low quality or deteriorated, old
gasoline.
4. Dirty fuel passageways blocking fuel
flow.
5. Carburetor needle stuck. Fuel can
be smelled in the air.
6. Too much fuel in chamber. This can
be caused by the carburetor needle
sticking.
IGNITION (SPARK) RELATED:
1. Spark plug wire disconnected or not
connected securely.
2. Spark plug electrode wet or dirty.
3. Incorrect spark plug gap.
4. Spark plug wire or spark plug
broken.
5. Incorrect spark timing or faulty
ignition system.
COMPRESSION RELATED:
1. Cylinder not lubricated. Problem
after long storage periods.
2. Loose or broken spark plug.
(Hissing noise will occur when trying
to start.)
3. Loose cylinder head or damaged
head gasket. (Hissing noise will
occur when trying to start.)
4. Engine valves or tappets
misadjusted or stuck.
FUEL RELATED:
1. Fill fuel tank and open fuel valve.
2. Move choke to start position if
engine is cold.
3. Use only fresh 90+ octane unleaded
gasoline in proper mixture with
2-stroke engine oil.
4. Clean out passageways using
fuel additive. Heavy deposits may
require further cleaning.
5. Gently tap side of carburetor float
chamber with screwdriver handle.
6. Turn choke to run position. Remove
spark plug and pull the start handle
several times to air out the chamber.
Reinstall spark plug and set choke
to start position.
IGNITION (SPARK) RELATED:
1. Connect spark plug wire properly.
2. Clean spark plug.
3. Correct spark plug gap.
4. Replace spark plug wire and/or
spark plug.
5. Have qualified technician diagnose/
repair ignition system.
COMPRESSION RELATED:
1. Pour tablespoon of oil into spark
plug hole. Crank engine a few times
and try to start again.
2. Tighten spark plug. If that does not
work, replace spark plug. If problem
persists, may have head gasket
problem, see #3 to the left.
3. Tighten head. If that does not
remedy problem, replace head
gasket.
4. Adjust valve clearance. If that does
not work, clean or replace valves/
tappets.
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