There are lots of people who want to save a few dollars and bootleg a manual.
There are a number of manuals available from ebay and other places. Spend a few dollars and buy a real manual, not a poor copy.
We all know of the Haynes and Clymer manuals. Haynes seems a little more for the novice, where Clymer is a little more technical and harder to read. I personally prefer the Haynes. It has color wiring diagrams! The one place you MUST have color.
(http://i1206.photobucket.com/albums/bb442/adidasguy/GS500/DSC01513.jpg)
You can find copies of the real Suzuki service manual - new and used. I found a new one in a Suzuki binder for about $20. I think this is the one everyone bootlegs. Easy to make a PDF since it is loose leaf - just drop in the auto-feed of a copier and you'll get a scanned PDF manual. I do not support bootlegging since I am in the software business.
(http://i1206.photobucket.com/albums/bb442/adidasguy/GS500/DSC01516.jpg)
This one is interesting. I haven't seen a USA version. I got this from Germany, but is in English. This is the parts catalog we always see on-line. So handy to be able to have a printed parts catalog when you're putting things back together. I would be lost if I had to always look up the parts on the internet. A complete printed book with index thumbnails in the front is now my most used manual as I assemble Phenix. Bought on ebay. $15 or so plus postage. This book has the real part numbers for the 3 types of clip-ons and the part number for the 89 bars and the 90-2000 bars. I used the 90-2000 part number for the bars, did a google search and hope to have a pair of brand new bars from a dealer in the UK.
(http://i1206.photobucket.com/albums/bb442/adidasguy/GS500/DSC01512.jpg)
(http://i1206.photobucket.com/albums/bb442/adidasguy/GS500/DSC01519.jpg)
(http://i1206.photobucket.com/albums/bb442/adidasguy/GS500/DSC01520.jpg)
This one is interesting. It is an assembly manual. Shows what is done to put a bike together at a dealer. Interesting and useful.
(http://i1206.photobucket.com/albums/bb442/adidasguy/GS500/DSC01517.jpg)
This is a service manual - in German.
(http://i1206.photobucket.com/albums/bb442/adidasguy/GS500/DSC01514.jpg)