Troubleshooting
WARNING
To reduce risk of serious injury, including fluid injection and splashing in eyes, or on skin, always follow Pres- sure Relief Procedure on page 6 before proceeding.
Problem | Cause | Solution | |
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Engine will not start or | No gasoline in fuel tank or carburetor. | Fill the tank with gasoline, open fuel shut off valve. | |
is hard to start |
| Check fuel line and carburetor. | |
| Low oil level. | 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 | |
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| dry spark plug. | |
| Loose or wrong battery connection. | Check and tighten battery connections. | |
| Battery not properly charged. | Check electrolyte level of cells, recharge battery. | |
| Choked improperly. Flooded engine. | Open choke and crank engine several times to | |
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| clear 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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| Incorrect ignition timing. | Time engine. | |
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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 natural | Check filter. Replace packings. See PUMP | |
| wear. | SERVICE. | |
| Inadequate water supply. | Check water flow rate to pump. | |
| Belt slippage. | Tighten or replace; use correct belts and replace | |
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| both at same time. | |
| Fouled or dirty inlet or discharge valves. Even | Clean inlet and discharge valve assemblies. Check | |
| a small particle can cause the valve to stick. | filter. | |
| 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 | |||
Inlet water temperature too high. | Check water temperature; may not exceed 160_F. | ||
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| Overpressurizing pump. | Do not modify any | |
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| EQUIPMENT MISUSE HAZARD. | |
| Excessive pressure due to partially plugged or | Clean or replace tip. See Installing and Changing | |
| damaged tip. | Spray 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 pressure | valve or worn inlet and/or discharge valves. |
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on the discharge side |
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