My poor little guy only had 2 rides in when I presume he blew out the top end of his pw-50. I don't know for sure that this is what happened, but it would appear that way. We were riding in some extreme clay/mud and the bike was working hard. Kept stalling, and then the kick start seized up. I managed to break it free, and start the bike, only for that to happen again! Now I can barely start it, it sounds bad, and has hardly any power. (not ridable) Anyone know of any do -it yourself videos out there on the net? The dealer quoted me $80 per hour plus tax and parts! yikes! His bike is a 1999. Many thanks!!! I would love to get him back out riding!