I have no idea where you can get owners manuals but I have a complete set for my trailer and the owners manual itself is very vague and pretty useless. The manuals for individual components such as the landing gear, slide mechanism, fridge, water heater, furnance and A/C are more useful. Not to knock this site, I am a member of a Keystone owners forum (not affiliated with Keystone) consisting of keystone owners which for me provides much more information than the owners manuals. I am sure that there is a simalar site for Thor.