Engine runs for 2 minutes and then dies every 10-20 seconds

I just bought a brand new Ryan Aerator with a Briggs engine last year. I pulled it out of storage and it ran fine for a couple of minutes, but then would die every 10 seconds. If i let sit for a few minutes it runs for a little longer and then continues to fie. I took it to two different people to fix, and they both cleaned out the carburetor and is stilling having the same problem. I’m thinking it’s something with the fuel intake but honestly I don’t know enough about it. Anyone else have this issue with their aerator?