the carbs and magnetos are pretty good on them its the acrual mechanical parts that seem to have troubles. It was running at a little higher than idle (around say the 2500 mark) it appears there is fine cracks all over the underside of it, also the keyway seems fractionally larger than it should be. if the flywheel has been avle to vibrate a little bit over time I guess it could have split it.
All the castings are very crystalised compared to the older engines also. This frame is a candinate for a decent australian 2 stroke engine and giving it a good run before finding a new home for it.
