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| HTH — TROUBLESHOOTING | |
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| Troubleshooting | ||
Symptom |
| Possible Problem | Solution |
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| Check all electrical connections in the lighting circuit. |
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| Wiring? | Verify wiring is in good condition with no shorts. Replace |
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| defective wiring or components immediately. |
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| If +12VDC is present at light fixture connector when light |
Lights (optional) not working. |
| Lights? | switch is activated and light does not turn on, replace |
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| light bulb. |
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| Bad switch? | Check the continuity of light switch. Replace light switch |
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| if defective. | |
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| Bad fuse? | Check fuse. Replace fuse if defective. |
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| Retardant? | Check retardant level in tank. Fill tank as required. |
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| Check all electrical connections in the spray pump |
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| Wiring? | circuit. Verify wiring is in good condition with no shorts. |
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| Replace defective wiring or components immediately. |
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Retardant spray (optional) not working. |
| Bad switch? | Check the continuity of both left and right spray switches |
| (palm handles). Replace spray switch if defective.. | ||
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| If +12VDC is present at pump connector when spray |
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| Bad spray pump? | switch is activated and pump does not operate, replace |
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| spray pump. |
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| Bad fuse? | Check fuse. Replace fuse if defective. |
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| Blade speed out of adjustment? | See section on blade speed adjustment. |
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| Adjust the connecting linkage found at the base of the |
Steering is unresponsive. |
| Steering linkage out of adjustment? | handle. Contact your MQ field service manager for |
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| Worn components? | Check for wear of steering bearings and linkage |
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| components. Replace if necessary. | |
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Operating position is uncomfortable. |
| Seat adjusted for operator? | Adjust seat with lever located on the front of the seat. |
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| If the motor runs and the pitch is not affected, parts |
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| Broken or loose parts? | inside the power head may be loose or broken. Return |
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| power head to dealer for service. |
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Power head on Electric Pitch (optional) not |
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| Check all electrical connections and wiring. Check the |
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| continuity at the power head unit. Verify that there is | |
working. |
| Wiring? | |
| voltage present at the power head switch with the key | ||
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| switch in the “on” position. |
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| Switch? | Check the continuity of the switch. If switch is |
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| malfunctioning, replace immediately. | |
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| Crank handles? | Make sure that both crank handles are pushed down as |
Linkage on Twin Pitch not working. |
| far as possible to ensure that the linkage is engaged. | |
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| Broken part? | Replace all broken parts immediately. |
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