Home › Forum › Ask A Member › Johnson AD-12 mystery › Re: Johnson AD-12 mystery
When the flywheel nut is torqued properly, is there still any vertical play in the flywheel itself? I had a flywheel with a damaged keyway that would not seat properly. The only way to tighten it up was to put a washer under the flywheel nut, but that was no solution to the problem. The flywheel was dragging on the tops of both coils, but the motor still ran that way. The solution was a good used flywheel and a NOS flywheel key.
It seems unusual that your flywheel is dragging on the armature plate without hitting the tops of the coils first. For some reason either the flywheel, or armature plate, or both is/are way out of square to the crankshaft. If you spin the flywheel and look from the side, can you see that the flywheel does not hold in a consistent plane, or does it "visually wobble" vertically indicating that it is out of square to the crankshaft?
Improvise-Adapt-Overcome