Today, I was starting to get my pocket bike running and when I pulled the pull start all I heard a metal clashing. I tried again same thing. I removed my pull starter and noticed that my fly wheel was very loose and coil was really close. I moved my coil back as far as it went, tightened my flywheel and put the pull start back on. Then as I did before pull the pull start a few times and the same problem happened, It seems every time I put the flywheel on it just gets loose. Is there anyway to make the flywheel stay tight and on this is a huge issue because my old flywheel broke because the engine started running and my flywheel cracked in half off the coil. If anyone knows a cure and could post it that would be highly appreciated!