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| Troubleshooting |
| Troubleshooting |
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Problem | Cause | Solution |
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Engine will not start | Engine switch is OFF | Turn engine switch ON |
| Engine is out of gasoline | Refill gas tank. Honda Engines |
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| Engine oil level is low | Try to start engine. Replenish oil, if |
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| necessary. Honda Engines Owner's |
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| Manual. |
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| Spark plug is disconnected of dam- | Connect spark plug cable or replace |
| aged | spark plug |
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| Cold engine | Use choke |
| Fuel shutoff lever is OFF | Move lever to ON position |
| Oil is seeping into combustion | Remove spark plug. Pull starter 3 to 4 |
| chamber | times. Clean or replace spark plug. |
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| Start engine. Keep sprayer upright to |
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| avoid oil seepage |
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Engine operates, but displacement | Pump switch is OFF | Turn pump switch ON |
pump does not operate |
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Pressure setting too low | Turn pressure adjusting knob clock- | |
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| wise to increase pressure. |
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| Fluid filter (29) is dirty | Clean filter. Page 22. |
| Tip or tip filter is clogged | Clean tip or tip filter. Manual 309639. |
| Displacement pump piston rod is | Repair pump. Manual 309250. |
| stuck due to dried paint |
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| Connecting rod is worn or damaged | Replace connecting rod. Page 8. |
| Drive housing is worn or damaged | Replace drive housing. Page 8. |
| Electrical power is not energizing | Check wiring connections. Page 11. |
| clutch field | Reference pressure control repair. Page 13. |
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| Reference wiring diagram. Page 23. |
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| With pump switch ON and pressure turned to |
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| MAXIMUM, use a test light to check for power |
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| between clutch test points on control board. |
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| Remove clutch wires from control |
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| board and measure resistance across |
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| clutch coil. At 70° F, the resistance |
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| must be between 1.2 +0.2Ω; if not, |
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| replace pinion housing. |
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| Have pressure control checked by authorized |
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| Graco dealer |
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| Clutch is worn, damaged, or incor- | Adjust or replace clutch. Page 9. |
| rectly positioned |
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| Pinion assembly is worn or damaged | Repair or replace pinion assembly. Page 9. |
6 | 310813 Rev C |