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QP- 40TE — TROUBLESHOOTING (ENGINE/PUMP)
TABLE 5. ENGINE TROUBLESHOOTING (Continued)
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| SOLUTION | |
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Operation not satisfactory |
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| Governor adjustment improper? |
| Adjust governor to correct lever. | |||
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| Governor spring defective? |
| Clean or replace ignition. | |||
Rotational speed fluctuates. |
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| Fuel flow erratic? |
| Check fuel line. | |||||
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| Air taken in through suction |
| Check suction line. | |||
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| line? |
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Recoil starter not working |
| Dust in rotating part? |
| Clean recoil starter assembly. | ||||
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properly. |
| Spring spring failure? |
| Replace sprial spring. | ||||
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| TABLE 6 PUMP TROUBLESHOOTING |
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| SYMPTOM |
| POSSIBLE PROBLEM |
| SOLUTION |
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| Not enough priming water in the housing? | Add water. |
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| Engine speed too low? |
| Increase throttle. |
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| Strainner plugged? |
| Clean strainer. |
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| Suction hose damaged? |
| Replace or repair hose, and clamps |
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| Air leak at suction port? |
| Check that fittings are tight and properly sealed. |
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| Pump does not take on water. |
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| Pump is located too high above water line? | Move pump closer to water. |
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| Debris collecting in pump housing? |
| Clean pump housing. |
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| Too much distance between impeller and volute. | Adjust clearance by adding shims or replace impeller. |
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| Min. .006" - Max. .020" |
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| Water leaking out weep hole between pump and | Check condition of mechanical seal and gaskets, |
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| engine? |
| between pump end and engine housing. |
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| Engine speed too low? |
| Increase throttle speed. |
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| Pump takes in water, little or no | Suction strainer partially plugged? |
| Clean strainer. |
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| discharge. |
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| Impeller/Volute worn? |
| Adjust clearance by adding shims or replace |
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| impeller/volute |
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| Fittings/clamps are not sealed properly? | Tighten, replace or add clamp. (Keep extra seals on |
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| Suction hose leaks at inlet. |
| pump) |
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| Hose diameter is too large? |
| Use smaller diameter hose or replace hose. |
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| Discharge does not stay on |
| Pressure too high? |
| Check pressure, add additional clamp. |
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| coupling. |
| Hose kinked or end blocked? |
| Check hose. |
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| Impeller jammed or blocked? |
| Open pump cover and clean dirt and debris from |
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| inside housing. |
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| Impeller does not turn: pump is |
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| Impeller and volute binding? |
| Adjust clearance by removing shim from behind |
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| hard to start. |
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| impeller. |
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| Defective engine? |
| See Hatz Diesel Engine Owner's Manual. |
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