Hi,
I had the exact same problem as above, none of the answers above worked. I believe the problem is that the fuel system is air bound. I went through the same thing for about 2 months. I went away for a month or so, my daughter cut the grass and had the same problem. I got back and fuel up again and the problem went away!
TRY THIS: Take the gas cap off, you will see a small hole about a inch from the top of the tank. Fill with gas to the very top and you should see bubbles coming from that small hole (you may have to do this a couple of times to get the air out of system). It should work fine till next year. LOTS OF LUCK If this works, please post for others.
I tried running the engine for 2 minute and the engine wasn't even hot. It did the same thing and didn't start until it was 10 minutes. I think something is not permitting gasoline from getting through.
I don't think this is strange, the engine is running very hot. I was thinking of a thermal failure also somewhere too.