I got a Craftsman (550 series Briggs and Stratton engine) push mower that hasn't been used in a few years. I changed the oil, air filter, and spark plug. At first I couldn't get it to start, but then I used a little starting fluid and got it going. Now I am having a strange problem. The mower keeps on stalling. I will run for may 30 seconds or so before it stalls. I discovered that if I hold the mower at a 45 degree angle to the left (gas tank above engine) then it will run without stalling. I can keep it running like that for a long time, but the minute that I lower it back flat on the ground, it stalls again. It seems to me to be some sort of fuel delivery problem, but I don't know where to start. I have never worked on mower engines before. Anyone have any ideas?
Thanks!
Thanks!