I have a Scag SZC 36A-19KAI Zero turn mower, I mow a Disc Golf Course in the Summer, it takes me about 6 1/2 hours too mow. The last two times I was mowing, I got about 2 hours in and the mower died, tried to re start and it would not start. Then I heard a gurgling sound coming from the engine, it was coming from the air filter area, took of the air filter cover and saw fuel bubbling up from the air cleaner ?? I had to wait for the mower to cool down, and the fuel to recede ( the air cleaner is directly above the exhaust !!) then took off the float bowl made sure it was clean, and not hung up. Put it back on and it fired right back up, then about 2 hours later it did it again ??? Not sure what the problem is, but I don't want to blow up ???