... nut with 17wrench,counterclockwise loosen the lock nut2. Insert the tool machine front spindle hole inside, petiole to insert in place of ... knives, not barbaric operation, to prevent damage to the cutting tool, machine. Scraping the skin thoroughly, we should thoroughly remove the old ... , please use the machine with the wrench to tighten.2,in the process of use, if appear a tool inversion or not ...