Using the Klein Tools 2006 crimping tool is a straightforward process. First, select the appropriate 6 - 4/0 AWG lug or terminal for your job. Then, place it in the crimp nest of the tool. Hold the tool firmly by the ultra - comfortable hand grips and squeeze the high - leverage handles. You can adjust the crimp depth according to your needs using the adjustment screw. When using the tool, make sure to wear appropriate safety gear like gloves. Also, keep the tool away from children. For maintenance, after each use, wipe the tool clean with a dry cloth. Periodically check the crimp nest for any debris or wear. If you notice any issues with the tool's performance, such as a loss of mechanical advantage, it's a good idea to have it inspected by a professional.