TROUBLESHOOTING
BELT CONDITIONS
PROBLEM | POSSIBLE CAUSE | SOLUTION |
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Belt slippage | Belt too loose | |
| Mower overloading; material too | Reduce tractor ground speed but |
| tall or heavy | maintain full PTO rpm. Cut mate- |
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| rial twice, one high pass and then |
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| mow at desired height. Cut a par- |
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| tial swath. |
| Oil on belt from over lubrication | Be careful not to over lubricate. |
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| Clean lubricant from belt and pul- |
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| leys with a clean rag. Replace oil- |
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| soaked belt. |
| Belt hung up or rubbing | Check belt for free travel in pulleys |
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| and belt guides. Check under |
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| mower and around blade spindle |
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| shafts for wire, rags, or other for- |
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| eign material. Clean all material |
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| from under mower. |
| Belt or pulleys worn out | If the belt rides in bottom of pulley |
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| groove, either belt or pulley is worn |
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| and must be replaced. |
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Frayed edges on cover | Belt misalignment or belt rubbing | |
| guide | doesn’t rub any other part while |
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| running. |
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Belt rollover | Pulley misalignment | Realign. |
| Damaged belt | Replace belt.* |
| Foreign object in pulley grooves | Inspect all pulley grooves for rust, |
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| paint or weld spots and remove. |
| Worn pulley groove | Replace pulley. |
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Damaged belt | Rollover, high shock loads or | Replace belt.* |
| installation damage |
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Belt breakage | High shock loads | Avoid abusive mowing. Avoid hit- |
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| ting ground or large obstructions. |
| Belt came off drive | Check drive alignment for foreign |
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| material in grooves. Ensure proper |
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| tension. Avoid hitting solid objects |
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| or ground. |
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*Check belt for damage by laying it flat on floor. If belt does not lie flat (has humps or twists), which indicates broken or stretched cords, it must be replaced.
18 Troubleshooting | 15148 (Rev. 2/9/2007) |
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