Hi all recently purchased a Montesa cota 200 81/82 I think, I'm finding it hard to find a knowledge base for this machine,so who's the Go to on here for the knowledge?

There are two forums on here where you can ask Cota 200 questions. One is "Twinshock" and other is "Montesa".

There are also facebook pages for Montesa motorbikes.

Hi, I’m not certain but looks like you might possibly have a 200 ‘C’ model from 83. I had one back in the day. I think a couple of noticeable features of that model were half width front hub which I can’t see on your photo, and they also had a small flair/bulge at the rear bottom edge of the tank unit which smoothed over the top rear shock mounts but that might have been cut off if they’d got damaged or cracked over the years. I can see you’re missing the air box & chain tensioner and also the rubber straps which pull the rear of the tank down to the hooks on the frame. I believe ‘in motion’ are a good source of parts in uk.

Oh and it would have had the traditional montesa feature of plastic tubes for the chain to run in which floated on a bracket mounted on the rear spindle. 
It would be nice to see more photos, they were a decent bike really, underrated in my opinion, apart from the brakes which like most bikes at the time just stopped being brakes as soon as you got them wet !