Looks very similar to that fitted on the Merry Tiller Professional….although difficult to determine size from photos.
I have an ex MT Clinton cast iron engine here but it’s a bit buried at the moment pending, as ever here, 48hr day and parallel universe to have time to other than go to the day job. This is in need of a carburettor and air filter, lost in a previous repair effort. The old carb was warped beyond salvage on its flange…and lost when the project moved home. 🙁
I wonder if a note of the numbers from the carb on yours might help my search.? I did find another carb but it was wrong way round, mirror image like, and could not be married up.
Somewhere, I also have an aluminium Clinton, sold to me as being off a drain rodding machine.?? another one to get sorted….one day 😉 that one is a bit similar in style to a B&S 3hp block.
Neither are types that I got to see when working in machinery world up to 22 years ago.
Clive.