| Problem | Cause | Remedy |
| Not Auto Detecting | Not in AUTO mode Sensor incorrectly adjusted Sensor wires broken |
Select Auto Mode Readjust cutter sensor Replace sensor wire |
| Unreliable Auto Detection | Sensor incorrectly set | Readjust sensor closer |
| Not returning over Cutter when Auto Detecting | Correction cycle incorrectly set Feed limiting screw not set |
Reset correction cycle Reset feed limiting screw |
| Grinder motor Vibrating | Unbalanced grinding wheel | Dress & true grinding wheel |
| Cutter lifting while being pushed | Incorrect feed pawl adjustment | Readjust feed pawl |
| Cutters burning and burring | Excessive grinding Loaded grinding wheel |
Reduce amount of material being ground Dress grinding wheel |
| Cutters different angles | Incorrect angle setting | Reset grinding head angle |
| Cutters different depths | Incorrect angle setting | Reset grinding head angle |
| Cutters different lengths | Incorrect angle setting Cutter lifting during grind Grinding arm not on centre |
Reset grinding head angle Readjust feed pawl Centre grinding arm |
| Incorrect hook angle | Worn grinding wheel | Redress grinding wheel |
| Grinding head not changing angles | Excessive preload on worm segment | Adjust worm wheel preload |
| Chain sticking/bunching in guide | Damaged drive links Chain guide too tight |
Remove burrs on drive links Fit correct chain guide spacers |