After running for about half an hour. It stalls and has to sit for about 5 to 10 min. before it will start. It will run for 10 to 15 min. then it stalls again. I have to wait to start it again
I would check and make sure no one has replace the gas cap as it sounds like it is starved for fuel. You could try to run it w/ the cap a little loose to disprove this idea. Also check the fuel filter for proper change frequency.