... , petiole to insert in place of the cutting tools3, with 14 spanner fixed spindle, with 17 wrench clockwise rotation, will lock nut lock4 ... back, nudging down, pay attention to the scraped bark gently with knives, not barbaric operation, to prevent damage to the cutting ... whether the spindle lock, if not, please use the machine with the wrench to tighten.2,in the process of use ...