Finally got the little JAP 80 engine running today but removing the flywheel was hell's own job. They don't have a keyway on the shaft so the shaft and flywheel are tapered and once on they want to stay on. I had to drill into the ally flywheel right next to the shaft to release it's clamp on the shaft. Luckily I drilled into the shaft a bit. I used this to re-align the flywheel, as there is no way of knowing which position is correct without a keyway.