On our old coach, it did not come with any manuals either.
The actual motor coach "manuals" were easy to find online from the coach manufacturer, Newmar.
It was everything else that took sometime, appliances, jacks, etc.
With model numbers in hand, I started my online search. The coach at the time was 12 years old.
I found "most" of the manuals or "Close enough for government work" to at least give a working knowledge of the part or applicance.
Good luck - and when you finally retire, you'll wonder how you ever had time to work..........
Angie & Glenn, and the boss: Haddington the Airedale
2017 Newmar Canyon Star 40', FMCA, NKK - Home based in the Heartland of America: Brownsburg, In 🌽🌽 🏁 Retired Army Sergeant Major
My home town: Brooklyn, New York