1. Press 'Change Tool' in Axis Control.
2. Push the button and turn the wheel counterclockwise. Remove the tool.
3. Remove the two screws.
4. Remove the knife carefully. Position the knife point in the middle of the knife holder.
5. Tighten the screws.
6. Insert the tool in the module. Push the button. Keep turning until the pin falls in the slot.
7. Keep turning the wheel until it's tightened.
8. Press 'Online' in Axis Control.