There are a couple of manuals available, but nothing as old as your TM. A very nice manual is at this location:
http://www.pinecon.com/TMDocs/MikeD_...rManual_v4.pdf It includes checklists and everything.
There is another one available made from scans of the pages of a 2002 model 2720SL which would not apply to your TM, but would be better than nothing. Look at this link and click on the "Here" in the message.
http://www.trailmanorowners.com/foru...ead.php?t=2365
You might e-mail the factory or call them. They are very helpful on this kind of thing.
Another place to look is on this forum at:
http://www.trailmanorowners.com/foru...splay.php?f=42 There's lots of information there including "How To" work everything from the water heater to the toilet.
Welcome to the world of TMers!