Hi Marty, I had a Bombardier 4.8 for three years, and joined the Bombardier owner's group linked above. They were very helpful and posted lots of pictures. I don't know how active they are now, it's been 7 years. Be happy to answer any questions you have to the best of my recollection.
I saw a copy of the owner's manual and found it to be not very helpful. This was because much of the original equipment had been broken and repaired or replaced by guesswork over the long life of the boat prior to my buying it. I had to build a new centerboard and rudder.
The rig is unusual, it has a fixed gooseneck and the entire mast/boom assembly rotates. The mast steps in a sleeve. The way I did this was to stand on the boat on the trailer and lay the mast athwart, then "walk" the butt end up to the boat while raising the masthead until I had it vertical alongside the boat, resting on the ground. Then I got a good grip with my left hand at gunwale level and right hand about three feet above the left, then in one smooth motion lift it straight up vertically above the gunwale, pivot to the step and lower it into the sleeve. This was dangerous because I'm holding the 23' mast all the way down at the bottom 1/4th and all that stick up in the air has a lot of leverage, so I always made sure that it was all clear for at least thirty feet around me in case I lost control and it all came crashing down. It's easier if you have someone to help lift and steady but I almost always single-handed.
Added in edit: I just realized the OP is over a year old and Marty hasn't been back judging by his post count. Oh well.