Owners manual for 1997 flagstaf popup camper

find tank see bottom of tank see drains if there at all.
if not we pump it dry

Try this site https://searchmanuals.net/search7/?keyword=%2Bowners+%2Bmanual&gclid=CjwKCAiA8OjjBRB4EiwAMZe6y5_84V3ek15m17m45ZjUS8CJGN8CDmLdMHFmDUai5BTqkctyGuc0KBoCV8sQAvD_BwE

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The Rockwood is manufactured by Forest River. Contact your nearest authorized retailer or click here: Forest River RV Contact Us Forest River Inc

Well, as you probably already know Forest River only carries the on-line manuals for the last three model years. However, I'd send them an email request and see if they can dig one up out of their archives.
Another good place to try would be owners group forums.

Rockwood.com still carries a good bit of pdf manuals.

Google it...."download manual forest river RV". You should find it out there in the world wide web.

If the bed is on the slide, more than likely the mechanism is under it. If not then it should be outside in the under belly.
I would check for voltage at the switch first.

You will not find a plumbing diagram since they are not published. Were you connected to the city water or were you using the fresh water tank? You will basically have to start at the input point and follow the water lines until you locate the leak. Identify what is leaking and replace. It is possible that a water fitting has either popped loose or cracked from freezing.

Try ebay