QP3TE — TROUBLESHOOTING (ENGINE/PUMP)
TABLE 7. ENGINE TROUBLESHOOTING (Continued)
SYMPTOM | POSSIBLE PROBLEM | SOLUTION | |
|
|
| |
Operation not satisfactory |
|
| |
|
|
| |
| Governor adjustment improper? | Adjust governor to correct lever. | |
|
|
| |
| Governor spring defective? | Clean or replace ignition. | |
Rotational speed fluctuates. |
|
| |
Fuel flow erratic? | Check fuel line. | ||
| |||
|
|
| |
| Air taken in through suction | Check suction line. | |
| line? |
| |
|
|
| |
Recoil starter not working | Dust in rotating part? | Clean recoil starter assembly. | |
|
| ||
properly. | Spring spring failure? | Replace sprial spring. | |
| |||
|
|
|
TABLE 8. PUMP TROUBLESHOOTING
SYMPTOM | POSSIBLE PROBLEM | SOLUTION | |
|
|
| |
| Not enough priming water in the housing? | Add water. | |
|
|
| |
| Engine speed too low? | Increase throttle. | |
|
|
| |
| Strainner plugged? | Clean strainer. | |
|
|
| |
| Suction hose damaged? | Replace or repair hose, and clamps | |
|
|
| |
| Air leak at suction port? | Check that fittings are tight and properly sealed. | |
Pump does not take on water. |
|
| |
Pump is located too high above water line? | Move pump closer to water. | ||
| |||
|
|
| |
| Debris collecting in pump housing? | Clean pump housing. | |
|
|
| |
| Too much distance between impeller and volute. | Adjust clearance by adding shims or replace impeller. | |
| Min. .006" - Max. .020" | ||
|
| ||
|
|
| |
| Water leaking out weep hole between pump and | Check condition of mechanical seal and gaskets, | |
| engine? | between pump end and engine housing. | |
|
|
| |
| Engine speed too low? | Increase throttle speed. | |
|
|
| |
Pump takes in water, little or no | Suction strainer partially plugged? | Clean strainer. | |
discharge. |
|
| |
Impeller/Volute worn? | Adjust clearance by adding shims or replace | ||
| |||
|
| impeller/volute | |
|
|
| |
| Fittings/clamps are not sealed properly? | Tighten, replace or add clamp. (Keep extra seals on | |
Suction hose leaks at inlet. | pump) | ||
| |||
|
| ||
| Hose diameter is too large? | Use smaller diameter hose or replace hose. | |
|
|
| |
Discharge does not stay on | Pressure too high? | Check pressure, add additional clamp. | |
|
| ||
coupling. | Hose kinked or end blocked? | Check hose. | |
| |||
|
|
| |
| Impeller jammed or blocked? | Open pump cover and clean dirt and debris from | |
|
| inside housing. | |
Impeller does not turn: pump is |
|
| |
Impeller and volute binding? | Adjust clearance by removing shim from behind | ||
hard to start. | |||
impeller. | |||
|
| ||
|
|
| |
| Defective engine? | See Engine Owner's Manual. | |
|
|
|
QP3TE TRASH PUMP — OPERATION AND PARTS MANUAL— REV. #4 (11/15/10) — PAGE 27