I posted in hear a few years ago about my H stalling after about 20 minutes run time, let it sit it starts back up, then quits. many said it was a bad coil, I replaced the coil, and had the same problem. I was talking to my friends brother and there father has two farmall h, he told me there was something on top of the generator I think he said that gets dirty and you have to clean it may be a regulator? just wondering if anyone could tell me what he was talking about. He said it is under the hood on the right side of the tractor if sitting on it. My H has been sitting in a machine shed for about three years I don't know if the motor seized up or not I'm thinking about pulling it out this spring and maybe selling it? Thanks for any help.