How do I set up the Miller Matic 135 for the first time?

Start by carefully unboxing the machine and attaching the Miller M-10 Gun to the machine's designated port. Connect the ground clamp to a clean, unpainted metal surface near the welding area, plug the machine into a compatible power source matching the voltage requirements, then load the appropriate flux-cored welding wire and set the wire feed speed and voltage according to the material and thickness being welded.