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| Troubleshooting |
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Problem | Cause | Solution |
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Herbicide leaking in motor mount. | Faulty or damaged motor shaft seal | Replace shaft seal |
| (1h). |
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| Operating pump extended time with | Do not exceed 5 minutes of operation |
| nozzle closed. | with nozzle closed. |
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| Motor shaft worn. | Replace motor if shaft has groove |
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| worn in seal area. |
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Motor overheating. | Gears (1c/10a) binding. | Check to make sure gears turn freely |
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| on shaft. |
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| Operating pump extended time with | Do not exceed 5 minutes of operation |
| nozzle closed. | with nozzle closed. |
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| Clogged inlet strainer (3b). | Clean or replace, see Maintenance, |
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| page 6. |
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| Clogged suction tube, hose, or | Inspect and clean if required. |
| nozzle. |
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| Operating pump more than 30 min- | Limit operation to 30 minutes per |
| utes continuous duty. | hour. |
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Switch will not turn pump on. | Blown fuse. | Replace fuse. 20 amp automotive |
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| fuse (Littelfuse ATO 257020 or |
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| Bussman |
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| Electrical problem. | Check that supply voltage is proper |
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| and getting to pump. |
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| Defective switch (8e). | Check and replace if defective. |
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| Mechanical problem. | Check switch actuator cam (8c). Cam |
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| should be actuating the switch (8e). |
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| Damaged or defective motor. | Check motor, replace if damaged or |
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| defective. |
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311628C | 9 |