... 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 ... be blown to the xylem.matters needing attention1, machine cutting tools, cutting tools, please do not used for other purposes, otherwise the ...