I have heard and read that when this model runs out of gas they are a real pain to start. Well I did run out of gas and checked my manual. Manual says there is a pressure relief screw that should be loosened. It even pictures the location. Problem is, I don't have one. I had to leave the unit set overnight before it started. I asked a Deere mechanic about it and he said he never heard of it. Anyone else here have this problem or suggestion?