Regardless of what engine it is (and it would be nice to know for future reference) if you're after a carb kit you need to get the numbers off the carb bowl, or possible a tag on the carb. The carb could have been changed over the years to something other than factory original. Last resort: take it off and show it to a parts man that has at least a few gray hairs, chances are he can help you identify the carb.
By the way, welcome to the 'bolt!! There's lots of help lurking on this sight.
