I have a Ford 2000, 3 Cyl, 12V gas tractor (See Avatar Picture) that I have had about 1 year. Havent used much but this summer it has been giving me fits. It will start right up in the morning and per like a cat. I can run for 20-30 minutes then it sputters and dies. I can pull the choke out and it will immediately restart then push choke in. It may idle great for a while and as soon as I put a load on the engine (like moving) it will sputter and die. Again it will restart with no problem. I have to let it sit for an hour befor I can get it to run for any amount of time. I have changed plugs, points, condenser, and rotor. I am pretty sure it is not an electrical problem. The gas filters are not going dry on me when it dies. If I take the thing out of gear and reduce the throttle, I may be able to keep it running until I put it back in gear and start to move. Then is sputters and dies again. I am not a gearhead but I think it might have something to do with the carb baffel or something like that. Any ideas?