A quick Google found an owners forum.....
http://groups.yahoo.com/group/Sailbirds/
I'd suggest you look around that site for info first.
If you join, you'll have access to a data base etc.
Google also has images of rigged boats that should help you.
Stepping the mast on your own is very hard unless you have
a tabernacle on deck that allows you to attach mast base with
a through bolt or clevis pin, and pivots.
jo