TROUBLESHOOTING CHART
WARNING
To reduce the risk of serious bodily injury, including fluid injection, splashing in the eyes or on the skin or injury from moving parts, always follow the Pressure Relief Procedure Warning before proceeding.
PROBLEM | CAUSE | SOLUTION | |
Engine will not start | No gasoline in fuel tank or carburetor. | Fill the tank with gasoline, open fuel shut off valve. | |
or is hard to start |
| Check fuel line and carburetor. | |
| Low oil (on units with low oil sensor). | Add to proper level. | |
| Start/Stop switch in Stop position. | Move switch to start position. | |
| Water in gasoline or old fuel. | Drain fuel tank and carburetor. Use new fuel and dry | |
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| spark plug. | |
| Choked improperly. Flooded engine. | Open choke and crank engine several times to clear | |
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| out gas. | |
| Dirty air cleaner filter. | Remove and clean. | |
| Spark plug dirty, wrong gap or wrong type. | Clean, adjust the gap or replace. | |
| Spray gun closed. | Trigger spray gun. | |
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Engine misses or | Partially plugged air cleaner filter. | Remove and clean. | |
lacks power | Spark plug dirty, wrong gap or wrong type. | Clean, adjust the gap or replace. | |
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Low pressure and/or | Worn or wrong size tip. | Replace with tip of proper size. | |
pump runs rough | Inlet filter clogged. | Clean. Check more frequently. | |
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| Worn packings, abrasives in water or | Check filter. Replace packings. See PUMP SERVICE. | |
| natural wear. |
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| Inadequate water supply. | Check water flow rate to pump. | |
| Belt slippage. | Tighten or replace; use correct belts and replace both | |
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| at same time. | |
| Fouled or dirty inlet or discharge valves. | Clean inlet and discharge valve assemblies. Check | |
| Even a small particle can cause the valve | filter. | |
| to stick. |
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| Restricted inlet. | Check garden hose, may be collapsed or kinked. | |
| Worn inlet or discharge valves. | Replace worn valves. | |
| Leaking high pressure hose. | Replace high pressure hose. | |
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Water leakage from | Worn packings. | Install new packings. See PUMP SERVICE. | |
under pump manifold |
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Water in pump | Humid air condensing inside crankcase. | Change oil as specified in MAINTENANCE. | |
| Worn packings. | Install new packings. See PUMP SERVICE. | |
| Oil seals leaking. | Install new oil seals. See PUMP SERVICE. | |
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Frequent or | Scored, damaged or worn plungers. | Install new plungers. See PUMP SERVICE. | |
premature failure of | Abrasive material in the fluid being pumped. | Install proper filtration on pump inlet plumbing. | |
the packings | |||
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| Inlet water temperature too high. | Check water temperature; may not exceed 160_F. | |
| Overpressurizing pump. | Do not modify any factory±set adjustments. See | |
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| EQUIPMENT MISUSE HAZARD. | |
| Excessive pressure due to partially plugged | Clean or replace tip. See Installing and Changing Spray | |
| or damaged tip. | Tips. | |
| Pump running too long without spraying. | Never run pump more than 10 minutes without | |
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| spraying. | |
| Running pump dry. | Do not run pump without water. | |
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Strong surging at the | Foreign particles in the inlet or discharge | Clean or replace valves. See PUMP SERVICE. | |
inlet and low | valve or worn inlet and/or discharge valves. |
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pressure on the |
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discharge side |
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