Troubleshooting
Troubleshooting
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 Owner's |
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| Manual. |
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| Engine oil level is low | Try to start engine. Replenish oil, if necessary. |
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| Honda Engines Owner's Manual. |
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| Spark plug is disconnected or damaged | Connect spark plug cable or replace spark plug |
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| Cold engine | Use choke |
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| Fuel shutoff lever is OFF | Move lever to ON position |
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| Oil is seeping into combustion chamber | Remove spark plug. Pull starter 3 to 4 times. |
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| Clean or replace spark plug. Start engine. |
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| Keep sprayer upright to 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 clockwise to | |
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| increase pressure. |
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| Fluid filter is dirty | Clean filter. Manual 309640. |
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| Tip or tip filter is clogged | Clean tip or tip filter. Manual 309640. |
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| Displacement pump piston rod is stuck | Repair pump. Manual 310643. |
| due to dried paint |
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| Connecting rod is worn or damaged | Replace connecting rod. |
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| Drive housing is worn or damaged | Replace drive housing. Page 34. |
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| Electrical power is not energizing clutch | Check wiring connections. Page 47. |
| field | Reference Digital Display Messages. Page 60. |
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| Reference wiring diagram. Page 67. |
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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 board and |
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| measure resistance across clutch coil. At 70° F, |
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| the resistance must be between 1.2 +0.2Ω; if |
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| not, 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 incorrectly | Adjust or replace clutch. Page 37. |
| positioned |
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| Pinion assembly is worn or damaged | Repair or replace pinion assembly. Page 37. |
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24 | 313313A |
