I have several Cub Cadets. Most run decent but one has carb problems. It is a 1200. I can run it all day or just a short time and it runs real good. If I shut it off and leave it over night, the tank is empty the next morning. Yesterday, I decided to fix it. I checked the carburetor completely and found nothing. Still has gas pouring out after about 2 or 3 minutes. I tried 4 known good carburetors and changed floats and needle/seat and it still does the same thing, gas running on the ground. All these carburetors are very clean inside and out. The floats are in good condition. I even tried lowering the float setting. The only difference I can see between this tractor and some of the others is it has a 3/8" fuel hose but the others have a smaller hose, maybe 5/16".
What am I missing?
What am I missing?