Allen Junior

Yes I took out the spark plug and still won’t turn over I took apart the pull string housing assembly and was looking to see if something might have came apart in there but nothing I can turn back and forth about a quarter turn each way the part thats used by the pull string to start the engine but no more then that I also sprayed blaster down in motor where spark plug was just to see if maybe it would free up after sitting but didn’t work. HELP PLEASE

I have a1999 Yamaha bear tracker 250cc one day I started it with choke on and it idled for a min then clicked some and shut right off. I was using the pull start to start cause something wrong with starter but it won’t pull any at all now like it’s locked up can someone tell me what the problem might be