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Page 15For technical questions, please call 1-800-520-0882.Vertical Engine
Troubleshooting
Problem Possible Causes Probable Solutions
Engine will not start MOWER ENGINE SPECIFIC:
1. Brake Handle not held or brake
cable not connected properly.
2. Mower on top of grass.
MOWER ENGINE SPECIFIC:
1. Make sure brake handle is held down
and brake cable is properly adjusted.
2. Start mower atop clear area free
of loose objects and grass.
FUEL RELATED:
1. No fuel in tank.
2. Low quality or deteriorated, old gasoline.
3. Carburetor not primed.
4. Dirty fuel passageways.
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.
FUEL RELATED:
1. Fill fuel tank.
2. Use fresh 87+ octane unleaded gasoline.
3. Press priming bulb before
starting cold engine.
4. Clean out passageways using
fuel additive. Heavy deposits
may require further cleaning.
5. Gently tap side of carburetor oat
chamber with screwdriver handle.
6. Turn Throttle to full position.
Remove spark plug and pull the
start handle several times to air
out the chamber. Reinstall spark
plug and attempt to restart.
IGNITION (SPARK) RELATED:
1. Spark plug cap not connected securely.
2. Spark plug electrode wet or dirty.
3. Incorrect spark plug gap.
4. Spark plug cap broken.
5. Incorrect spark timing or
faulty ignition system.
IGNITION (SPARK) RELATED:
1. Connect spark plug cap properly.
2. Clean spark plug.
3. Correct spark plug gap.
4. Replace spark plug cap.
5. Have qualied technician diagnose/
repair 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
mis-adjusted or stuck.
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.
3. Tighten head. If that does not remedy
problem, replace head gasket.
4. Have qualied technician diagnose/
repair ignition system.
Engine misres 1. Spark plug cap loose.
2. Incorrect spark plug gap or
damaged spark plug.
3. Defective spark plug cap.
4. Old or low quality gasoline.
5. Incorrect compression.
1. Check wire connections.
2. Re-gap or replace spark plug.
3. Replace spark plug cap.
4. Use only fresh 87+ octane
unleaded gasoline.
5. Diagnose and repair compression.
(Use Engine will not start:
COMPRESSION RELATED section.)
Follow all safety precautions whenever diagnosing or servicing the equipment or engine.
SAFETYOPERATIONMAINTENANCE SETUP