I have a 2001 Challenger and I've been using the 1999 Shop Manual. It's my understanding that it's the best you can doo. I bought it for a small fee on a disk, probably off ebay. It's been a while.
I'd attach a portion of it but I'm new here and not sure about the Terms of Service. With SeaDoo out of the jet boat market, it's hard to imagine they care about this anymore.
Oh, and the parts diagram I use is from 1998.