my friends lT50 was getting fuel, it had compression and spark yet it wouldn't start. after some googling I found they have a common issue with the crank seal falling out. I couldn't find much on how to fix it so decided to make a video on what I did. I realized after that I probably could've pushed the seal back in without removing the flywheel. there are 3 holes in the flywheel where a bent piece of wire could be inserted to get to the seal. my fix with epoxy is probably more permanent. at least after watching this you can see what caused the problem, you can see where the seal is, how big it is etc which is more info than I had to work with when taking on this job. I likely would've tried pushing the seal back on with a wire first to confirm that was the issue before going to the effort of making a special tool to remove the flywheel. anyway I hope this video helps you out and saves you a bit of guess work.