Operating Instructions and Parts Manual
Troubleshooting Chart - Gasoline Powered Pressure Washers Only
Symptom | Possible Cause(s) | Corrective Action | ||
Engine will not start or | 1. | No gasoline in fuel tank or | 1. | Fill the tank with gasoline,open fuel shut off valve.. |
is hard to start |
| carburetor |
| Check fuel line and carburetor |
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| 2. | Check oil level.. Fill if necessary |
| 2. | Low oil | 3. | Move switch to start position |
3.Start/Stop switch in stop position 4. Drain fuel tank and carburetor. Use new fuel and dry
| 4. | Water in gasoline or old fuel |
| spark plug |
| 5. | Dirty air cleaner filter | 5. | Remove and clean or replace |
| 6. | Spark plug dirty, wrong gap or | 6. | Clean, adjust the gap, or replace |
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| wrong type | 7. | Trigger spray gun |
| 7. | Spray gun closed | 8. | See engine owner’s manual |
| 8. | Other causes |
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Engine misses or lacks | 1. | Partially plugged air cleaner filter | 1. | Remove and clean or replace |
power | 2. | Spark plug dirty, wrong gap or | 2. | Clean, adjust the gap, or replace |
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| wrong type |
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Low pressure and/or | 1. | Worn or wrong size tip | 1.. Replace with tip of proper size | |
pump runs rough | 2. | Inlet filter on pump clogged | 2.. Clean.. Check more frequently | |
| 3. | Worn water seals, abrasives in | 3.. Check filter.. Replace water seals.. See service center | |
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| water, or natural wear |
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| 4. | Fouled or dirty inlet or discharge | 4.. Clean inlet and discharge valve assemblies.. Check | |
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| valves |
| filter |
| 5. | Restricted inlet | 5.. Check garden hose, may be collapsed or kinked.. | |
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| Check inlet water flow |
| 6. | Worn inlet or discharge valves | 6.. Replace worn valves | |
| 7. | Leaking high pressure hose | 7.. Replace high pressure hose | |
| 8. | Pump drawing in air | 8.. Ensure hoses and fittings are tight | |
| 9. | Unloader valve seat faulty or worn | 9.. Check and replace | |
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Water leakage from | Worn water seals | Install new water seals.. See service center | ||
under pump manifold |
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Water in pump | 1. | Humid air condensing inside | 1. | Change oil as specified in maintenance schedule |
crankcase (milky oil) |
| crankcase | 2. | Install new oil seals.. See service center |
| 2. | Oil seals leaking |
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Frequent or premature | 1. | Scored damaged or worn plungers | 1. | Install new plungers.. See service center |
failure of the pump | 2. | Abrasive material in the fluid | 2. | Install proper filtration on pump inlet plumbing |
water seals | 3. | Inlet water temperature too high | 3. | Check water temperature; may not exceed 100o F. |
| 4. | Overpressurizing pump | 4. | Do not modify any factory set adjustments.. |
| 5. | Excessive pressure due to partially | 5. | Clean or replace tip.. |
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| plugged or damaged tip |
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| 6. | Pump running too long without | 6. | Never run pump more than 2 minutes without |
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| spraying |
| spraying |
| 7. | Pump running dry | 7. | Do not run pump without water |
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Strong surging at the | Foreign particles in the inlet or | Clean or replace valves.. See service center | ||
inlet and low pressure | discharge valve or worn inlet and/or |
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| discharge valves |
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Oil leakage between the | Worn oil seals and/or | Replace oil seals and/or | ||
engine and the pump |
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Fluctuating pressure | 1. | Valve worn, dirty or stuck |
| 2. | Pump drawing in air |
| 3. | Tip clogged |
1.Check and replace
2.Ensure hoses and fittings are tight.. Purge air from garden hose
3.Check or replace
Pressure drops after | 1. | Worn pump water seals | 1. | Check and replace |
period of normal use | 2. | Nozzle worn | 2. | Check and replace |
| 3. | Valve worn, dirty or stuck | 3. | Check, clean or replace |
| 4. | Unloader valve seat worn or dirty | 4. | Check, clean or replace |
| 5. | Nozzle in low psi position | 5. | Pull back nozzle to high pressure position |
www.chpower.com | 12 |
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