hi again,
iwent out to the shed this morning, and Bruce you were right the flywheel key was 1/2 sheared. I then reset the coil gap and went and started her up and low and behold I mowed for 1 hour (it was very wet thought) and she held together. I recon at high speeds the coil must have been creating resistance, and shearing the bolts and keys. So keep it in mind next time, it may be an incorrect coil gap!
Thanks for the help
Regards jay
