I purchased a non-running snapper with a Wisconsin Robin four stroke 4 horse power engine. The person I got it from stated that his wife parents owned the lawn mower for a few years and become Ill and was no longer able to cut the grass on their own. The mower then sat for several years inside the garage. The mower is very clean and looks like it was hardly used. I just had some time the other day to take a really good look at it. From what I have seen so far, the engine turns over as if it makes compression, the oil is clean, and it makes spark. I put some fresh fuel in the tank to see if it would start. I did notice that the choke valve in the carburetor (sorry if that is not the correct term) would not move free and was difficult to move by hand. Also when I turned on the fuel valve fuel started leaking out of the bowl. Is there a rebuild kit for the carburetor or can I get a new one? If so where can I get one?