i have speedfighter 2 year 2000?

when i got bike it was working but i took it apart to check the rings and to se why it was blowing lots of smoke out when i put it back together where the kick start is there was this niose so i took the side of and found a sping hade hit the belt and it hasnt started since i dont no if this as nocked the timing out or not how do i re set it and there seems that theres to much petrol going in as the plug is wet