... , biting the spindle with 14 wrench, biting lock nut with 17wrench,counterclockwise loosen the lock nut2. Insert the tool machine front spindle hole ... 14 spanner fixed spindle, with 17 wrench clockwise rotation, will lock nut lock4, connected to 12v dc power supply, pay attention not ... does not turn or spin, please check whether the spindle lock, if not, please use the machine with the wrench to ...