09 400 won’t run…. kinda

Hey guys, need a hand on my 09 sportsman 400 ho. It magically developed this issue- go to the garage. Hit the key, it will fire up perfectly. But after 15 or so minutes it will die. BUT if you pull the choke and work the throttle it will try to fire. Let it sit over night and the exact same thing happens.

I’ve pulled the fuel lines, seems like there was fuel at the carb. But let’s pretend I didn’t do that and start fresh.

Any ideas?