Well I have gotten both manuals, The OP Manual is a Bobcat original and the Repair Manual is a photocopy It is pretty good a few pictures are a little dark and the identifying numbers hard to make out but pretty good. The hydraulic diagrams were originally in color and now black and white.
My biggest question now is Bobcats prefix numbering system. This 753 S/n starts 5086 and nothing tells me what that represents. The OP Manual lists the prefixes for base and premium and they both start 51xx. My 753 has the premium instrument cluster (BOSS??) . I guess I may find out eventually.