Hey I’m new to the forum.

I bought this atv a few weeks ago for $400. He initially told me it needs a battery and carburetor but it’ll still sometimes start if you jump the starter. I got it to start twice and rode it for maybe 5 mins or so each time. That was of course after I changed the oil and gas. A few days ago I went to start it and it sounds like the starter is spinning freely. I read that the starter clutch could be my problem. So I removed the cover only the find that the gear attached to the starter clutch seems to te working fine. It spins clockwise freely and locks up when spinning it counterclockwise. So I put it all back to getter and removed the big hex screw on the left that covers the flywheel bolt and tried to start it to confirm that the flywheel spins and it does. I notice before this problem when I tried to start it I could hear the pressure coming from the exhaust pipe but now nothing. Could anyone help me with this issue??