Coachmen has a wide collection of model owner's manual which are all free downloads. Go to the website https://www.CoachmenRV.com/
once open pan down the page to the bottom of the page on your LEFT and click on MANUAELS. Now select model/unit, and YEAR, say RV and then RV type/model, year. Lots to download as well as good informational checklist, safety, which you can printout or download into a file. I have all of my model YEAR manual's and I think they go back 8 years or more. This enclouded trailers, 5th wheel trailers, lots of good stuff.
I would even say if you had other than a Coachmen, but say you know they use the same kind of equipment. That may be helpful if in need.
2021 Mercedes-Benz 3500XD, OM642, Daimler AG3.0L V6 Turbo, 190HP, Diesel 4X2, Galleria 24FL, Li3, Artic-White, Dual Rear wheel, 170wb, Cargo VAN, High-Top, 24'-3"overall. We call Greta and we are HL & Jan