Try searching for the answer on the Internet. I did the same when the mechanism in the Swivel Chair broke down. My chair has stopped spinning, I think it has lived its time. I decided to look for an answer on the Internet and was advised to buy a new chair, because it would be problematic to restore it. I looked at many sites on the internet and stopped at this website
abakusdirect.co.uk. The chair is comfortable and does not differ in convenience from the one I had. I think it's very cool when you have a comfortable chair in which you can relax.