Harbor Freight Tools 67596 - Manual (Page 16)

Page 16 For Pressure Washer technical questions, please call 1-800-444-3353. SKU 67546/67596
For engine technical questions, please call 1-800-520-0882.
Problem Possible Causes Probable Solutions
Engine will
not start
Starting instructions not
followed completely.
Refer to starting instructions and
follow them step-by-step.
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.
FUEL RELATED:
1. Fill fuel tank and open fuel valve.
2. Move choke to start position if engine is cold.
3. Use only fresh 87+ octane
unleaded gasoline.
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. Spark plug wire not connected securely.
2. Spark plug electrode wet or dirty.
3. Incorrect spark plug gap.
4. Spark plug wire broken.
5. Incorrect spark timing or
faulty ignition system.
IGNITION (SPARK) RELATED:
1. Connect spark plug wire properly.
2. Clean spark plug.
3. Correct the spark plug gap.
4. Replace spark plug wire.
5. Have qualified 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
misadjusted 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. Adjust valve clearance. If that does not
work, clean or replace valves/tappets.
Engine misfires 1. Spark plug wire loose.
2. Incorrect spark plug gap or
damaged spark plug.
3. Defective spark plug wire.
4. Old or low quality gasoline.
5. Incorrect compression.
1. Check wire connections.
2. Re-gap or replace spark plug.
3. Replace spark plug wire.
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.
troubleshooting
Rev 11c