So I was giving the car some runs up and down the field for 10 mins or so whilst tuning. Just when I was getting a good tune, it stopped. When I tried to pull the pull start it was slack and loose, it would come all the way up and down without any resistence.
I took the pull start of and it unrevaled and at first I thought it was this that was causing the problem (I will buy a new one). However, when i turn the nut that the pull start normally goes over, there is no resistence there either, it just spins freely. I know this would normally turn the flywheel. I can turn the flywheel which has resitance and I can hear the pop.
Any ideas what I have done? Click the link to take a look at the engine and nut that I refer to.
http://img141.imageshack.us/g/sam2914.jpg/
Cheers