TROUBLESHOOTING
PROBLEM | POSSIBLE CAUSE | SOLUTION |
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Engine or rotor stalls or stops | Obstructed discharge | Use branch or similar object to clear |
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| discharge. |
| Plugged rotor | Clear rotor. Feed material more |
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| evenly. |
| Feeding material too large into chipper | Reduce size of material being fed into |
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| chipper. |
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Hard to feed chipper, requires | Dull chipper blades | Reverse or sharpen blades. |
excessive power to chip |
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| Obstructed discharge | Use branch or similar object to clear |
|
| discharge. |
| Improper blade clearance | Adjust clearance between chipper |
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| block and chipper blades. |
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Chipper requires excessive power or | Obstructed discharge | Use branch or similar object to clear |
stalls |
| discharge. |
| Plugged rotor | Clear rotor. Feed material more |
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| evenly. |
| Wet or green material will not | Alternately feed dry material. |
| discharge |
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Engine stalls or belt squeals when | Engine clutch too fast | Lower the engagement handle more |
engaging clutch |
| slowly |
| Plugged rotor | Clear rotor. Feed material more |
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| evenly. |
| Belt tension too loose | Replace belt or spring. |
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Material from chipper wraps around | Stringy, green material bypasses | Rotate branch of material when |
rotor shaft | chipper blades | feeding to cut completely. |
| Dull chipper blades | Reverse or sharpen blades. |
| Improper blade clearance | Adjust clearance between chipper |
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| block and chipper blades. |
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Excessive vibration while running. | Drive system vibration | Check drive belts and pulleys for badly |
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| worn areas. Check for dull blade. |
| Rotor out of balance | Inspect rotor for broken or missing |
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| blades; replace if needed. Check rotor |
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| to see if it wobbles. Check to see if |
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| rotor is assembled correctly. |
| Chipper blade to chipper block | Set chipper blade/block clearance to |
| clearance is incorrect | recommended distance (1/16" to 1/8"). |
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MAN0458 (9/23/2005) | Troubleshooting 21 |
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