Thor: Many manuals are available for current Thor company RVs. The Thor website (http://www.thorindustries.com/ ) will give you a list of companies. Click on yours. Although you may not find a link for manuals, you will find a phone number for the company (Thor 877-855-2867). Call them and ask for a manual.
If you have a Citation, Corsair or Chateau model, please call 570-658-2340 to get a manual. (Thanks to Mark, an RV Friend, for that info.)