I have the "Jefferson Yachts Owners manual" that came with our 1996 Rivanna 52 CMY. It looks to me like Jefferson published one manual to cover all models rather than a manual for each specific model. As a result, it seems rather generic, but still useful.
Wait for me to get back from the Bahamas so I can get it copied. Maybe I could scan it, but it is two sided which complicates it a bit. I'm not sure I could scan with the document feeder with it being double sided.
I just purchased a 1991 Jefferson 42 sundeck the owner's manual is onboard I can get you a copy sometime soon whenever I can leave my house
I have an 87 Monticello 52 and the manual came with it. Honestly, there really isn’t that much good info there... most is really basic. Had a schematic for the gen, but not the mains.