Howdy Pannell-
I recently bought an '87 385 (see attached picture). I bought an I&T service manual from amazon.com and a (repro) owners manual at ytmag.com.
I haven't yet done anything with the tractor but am getting stocked up on a complete set of filters and lube so that I can give it an all over servicing before putting it to work.
I did quite a lot of searching the net to see what I could find on 385 and found...not much.
There seems to be a much bigger interest in small tractors built by fine craftsmen (ie, prisoners) in communist China (inside joke).
If you buy the 385, let me know. We'll start a CTOA (CASE Tractor Owners Association) of our own.
Best,
Mark