Like Patrick said it's pretty straight forward. If I can do it so can you
The only ones who have ever worked on my valk before it was mine was Honda, and like Patrick said some shops do but I'm convinced that the shop didn't follow the correct torqing sequence when they put on my last tire and that is why my pinion cup and drive shaft were worn. The pinion cup had dry red/rust colored powder in it and there are 2 holes in the bottom of the pinion cup that were clogged hence not letting any oil to pass thru to help lube the cup.
Go to
WWW.partzilla.com Search Honda motorcycle then select your year.
After you get there click on Final Driven Gear. #13 - pinion joint. $30.82
Go back and click on Swingarm #2- propeller shaft. #42.17. #16.-oil seal - $6.35
Also look for your O'rings and thrust washer and do it all Yourself and you will have the satisfaction of knowing How to do it and you will know it's done right.
Good luck,
Wewa