Hi, You have my interest here. I am restoring a YZ80D and have it all together thanks to donor parts from a 78 yz80E. Trouble is I have no spark and am wondering what to do as this part of a bike is not my forte'. I can telly that it has a magneto and that there is no spark. The key was broken off of the shaft that the magneto is held on with and I made a new one. Beyond that' I'm stuck. Any thoughts? Places I could find a how to on the magneto ignition system. I've beat up google pretty bad and have found nothing....