What is the Miller Multimatic 255 and what manual covers it?

The Miller Multimatic 255 is a multi-process welding machine covered by this Parts Manual (Model Mj509225N - Zz222222R, effective with Serial Number Pm-278174 B). The manual provides detailed parts information and assembly diagrams for the equipment. To maintain factory original performance, only Manufacturer's Suggested Replacement Parts should be used when ordering components.