How do I set up the Miller Multimatic 215 for operation?

Setup involves six main steps: (1) select the appropriate 120V or 240V plug for your power source, (2) connect the flow gauge regulator and gas hose to a shielding gas cylinder, (3) attach the cable electrode holder to the positive terminal and work cable to the negative terminal, (4) install the appropriate drive roll for your wire type and size, (5) connect the MIG gun to the welder, and (6) set up and ground your workpiece properly.