Help on 360 kit saw

[Bob Smith]

I’m new here and need help. I just did my first kit saw and it was fun. It started right up and I adjusted the idle and was adjusting the high speed jet when it began to run sour and died. Now it won’t start. It seems to have good compression, and a good blue spark. I had the aircleaner off while running and as it quit fuel and air was puffing out the square hole at the bottom of the carburetor. Is this an indication of why it won’t start? I have newseals on both sides of the crank. And a new spark plug. What do you think?