New to the forum. Just purchased a used 1981 Champion Bass Boat 21’. I’m trying to find any information on this boat or model. Manual? Diagram? Word of mouth lol. Boat is in pretty good condition. Electrical seems to work fine, just want to be prepared when something goes bad. Any response will be appreciated.

 Fish n Ski used  as a ski boat, good luck with your restoration. I can't help with Champs. Don't see a livewell or trolling motor mount, you need to rewire and add battery brackets, pumps etc.

The OB looks like OMC and Way2Slow can help you if that is what you have. Could also be a Yamaha?

'81 vintage boats were glassed over wood transums and stringers, make sure there is no dry rot.

Tom