Service Manuals for Rockets?

Between the service manuals in my signature and the help on this forum, I always managed to git'r'dun. What type of details are you looking for?
 
My guess is that link is selling a pirated copy of the factory service manual that is widely available for free. Haynes never made one for the Rocket and Clymer never did anything for Triumphs at all.

The sample images at the link were for bikes other than the Rocket.