As far as i know.....there are different publications......ie....Original Workshop manual..........Clymer(Crappy manual)...........Cycleserve(next crappy manual)........Haynes (more crapola).
Basically get yourself an original workshop one.......they are often seen on Ebay........or download one off the net...and ask away for anything else you might need on here.There also is a separate manual just for the Drivetrain........ of which we can provide you with the link to download.....or use the search option on here as it s been posted before.
There are also plenty of schematics which can be found for you on here if you let us know what in particular you are looking for.
If one was brought out specifically only for the rh.......of which i don t think there was....... there sure wasn t one brought out for each year it was in production.
Here s a link to quite a few workshop and owners manuals to download.(listed on right of page)
http://www.ringler.us/family/mybike.htmlSome U.S.A manuals had a mixture of references to a few bikes in the range depending on which publication .Worldwide there are similar bikes to your RH....but given different model numbers from country to country.
By the way....which particular manual do you presently have and what if anything specific are you wanting to know about your bike?
RH Owners manuals are a rare bird...................
Someone will be along shortly who will probably be able to print one off for you........maybe?
There s not a lot of riveting information in those books by the way.