I got a new to me '82 250r Atc. Second one (Not in pic). The rear brake doesn't work. I tried to bleed it, and didn't work, nothing came out (yes, brake fluid is in there) The guy said the o-rings are bad (in master cylinder). I see the bottom two o-rings move! The other Atc they don't. How hard is it to replace?? Where can I get these o-rings at??

TIA

 

Brake parts
Check out this link it should have a brake down of what you need. They are easy to put together, but you want to steel wool all the parts clean and use a "brake clean" spay to make it spotless before you go back together.

 

Thanks for reply. I had to order a new one on ebay. The metal o-ring clip was so rusted on there and broke, couldn't get it off =(

 

Bummer!!!! hope it all works out for ya!