Safety & Operating Instructions

Troubleshooting Table (continued)
S YMPTOM
POSSIBLE CAUSE
- Clutch overheats.

Immediately stop the engine and disconnect the spark plug wire.
- Belt burns.


Turn the Flywheel with a wooden stick to be sure it turns freely.
Check for a loose Drive Belt. See Chapter 4.
- Flywheel won’t turn.

Remove any built up debris from the Chipper Hopper Inlet and Discharge Chute.
The machine has

Check for a dull or damaged Knife; sharpen or replace the Knife. See Chapter 4.
excessive vibration.

The Knife is not properly seated on the flywheel. Loosen the Knife mounting screws, reset the
Knife and tighten the screws. Also, check the Knife to Wear Plate Gap. See Chapter 4.

If the machine still exhibits excessive vibration, contact us at www.MacKissic.com or call
1-800-348-1117 for assistance.
When chipping, the log
seems to vibrate
excessively and
“hammers” my hands.



The Knife is dull; sharpen or replace it. See Chapter 4.
The gap between the Knife and Wear Plate is too great; adjust the Gap. See Chapter 4.
Check Engine rpms; run Engine at full throttle when chipping.
Does not seem to feed
as well


The Knife is dull; sharpen or replace it. See Chapter 4.
Check Engine rpms; run Engine at full throttle when chipping.
Chipper Knife is hitting
the Wear Plate.

The gap between the Knife and the Wear Plate is set incorrectly; adjust the Knife to Wear Plate
Gap. See Chapter 4.
Engine runs but the
flywheel doesn’t rotate.


The inner Shoes of the Clutch are worn. Replace worn or broken Clutch. See Chapter 4.
Loose Drive Belt; adjust the Drive Belt tension. See Chapter 4.

Remove any built-up debris from the Chipper Hopper Inlet and Discharge Chute.
The machine’s wheels
track left or right while
being towed.

Check the tire pressure to make sure it matches the psi listed on the tire.
30 MacKissic Gravity Self Feeding Chipper