... spindle with 14 wrench, biting lock nut with 17wrench,counterclockwise loosen the lock nut2. Insert the tool machine front spindle hole inside, ... 14 spanner fixed spindle, with 17 wrench clockwise rotation, will lock nut lock4, connected to 12v dc power supply, pay attention ... 3 minutes.6, to begin operations., holding the machine, left hand in the former, right hand in the back, nudging down, pay ...