Hi Bill, that is a nice Solo generator you have there, I am a collector of the later Solo multimot engine and attachments but yours is the 1st version and I don’t know anything about it so sorry cant help with either questions. Germany would be the best chance of parts but couldn’t say where or how you would start.
Bill, all scanned, parts list in German and English, Instruction book in German. PM me with your email address and I’ll send you a PDF copy… That goes for anyone else who wants one….