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Troubleshooting – Harbor Freight Tools 67596 User Manual

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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