Harbor Freight Tools 67596 - Manual (Page 17)

Page 17 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 stops
suddenly
1. Low oil shutdown.
2. Fuel tank empty or full of impure
or low quality gasoline.
3. Defective fuel tank cap creating
vacuum, preventing proper fuel flow.
4. Faulty magneto.
1. Fill engine oil to proper level. Check
engine oil before EVERY use.
2. Fill fuel tank with fresh 87+
octane unleaded gasoline.
3. Test/replace fuel tank cap.
4. Have qualified technician service magneto.
Engine knocks 1. Old or low quality gasoline.
2. Engine overloaded.
3. Incorrect spark timing, deposit
buildup, worn engine, or other
mechanical problems.
1. Fill fuel tank with fresh 87+
octane unleaded gasoline.
2. Do not exceed equipment’s load rating.
3. Have qualified technician diagnose
and service engine.
Engine backfires 1. Impure or low quality gasoline.
2. Engine too cold.
3. Intake valve stuck or overheated engine.
1. Fill fuel tank with fresh 87+
octane unleaded gasoline.
2. Use cold weather fuel and oil
additives to prevent backfiring.
3. Have qualified technician diagnose
and service engine.
Does not
produce high
pressure
1. Diameter of water supply hose too small
2. Water supply is restricted.
3. Not enough water supply.
1. Replace hose with a ¾ inch hose.
2. Check water supply hose for
kinks, leaks, or blockage.
3. Open water faucet all the way.
Output pressure
varies
1. Not enough water supply.
2. Water inlet screen is clogged.
3. Nozzle is clogged.
4. Nozzle has mineral build up.
1. Check water supply hose for kinks, leaks,
or blockage. Open faucet all the way.
2. Remove inlet screen and rinse out.
3. Remove Nozzle and clean.
4. Remove Nozzle and clean with vinegar.
No intake of
chemicals.
1. Chemical hose not properly
inserted into unit.
2. Tube cracked or split.
3. Wrong Nozzle.
4. Injector turned off.
5. Injection tube strainer clogged.
6. Nozzle blocked.
7. Dried chemicals in injector.
1. Push firmly into injector. Replace tube.
2. Switch to black Nozzle.
3. Turn collar counterclockwise.
4. Clean strainer.
5. Clean Nozzle.
6. Dissolve by running warm water
through the injection tube.
7. Run clean water through injector until clear.
Follow all safety precautions whenever diagnosing or servicing the equipment or engine.
Rev 11c