How to operate wire stripping and terminal crimping, wire stripping crimping machine for manual, 1. Please pull out the power cable while carrying on electric circuit checking etc. Please do not carry on any operation, while the power is on, to avoid the electric shock, 2. When replacing the cutter holder or other mechanic parts, turn off the power supply, and pull out the power supply plug, to prevent the blade from wounding the finger and avoids electric shock.