sadly the Oliver 55 like I have is unique to itself. Parts from the rest of the Oliver line are not compatable . most parts are used. there are a few tractor bone yards around that have some parts. The carburetor is the same as a ford tractor.jvls1942
Are the motors specific to Olivers?? Or other tractor companies used same?
I know they are no longer produced,, so parts may be difficult to locate.
except it is mounted on the opposite side, so the adjustment screws are between the carb and the block.
Parts in general are more expensive than the parts for the rest of the Oliver line. Like three or four times as much.