The online owner's manual has a lot of information in it.
An example, I found the manual for the trailer axles (which has the procedure for adjusting the brakes)
The online owners manual is here:
Forest River RV Fifth Wheel English 2017
Once there, a ~60 page generic 5th wheel manual is available (see red circled area in image 1)
You can drill down into a subject and find manuals (such as for the water pump) to the right (see red circled area in image 2).
There are also sometimes videos linked there that deal with winterization and other stuff like that.
The fun part sometimes is figuring out which manuals actually apply to your camper.
Anything that might be an option (whether your camper has it or not) seems to be here.
Edit: Rats... I meant to post this in the 368RLBHK thread that gpaw started.