This is not the newer FS 80 motor. It was manufactured in the 70's and 80's in Japan. I am not sure about the size of this old motor, but it's in decent shape compression wise. Propshaft end is very short metric threads and a taper for the flywheel. Does anyone make a prop adapter with internal taper to fit this Stihl? Don't want to make one that way if I can get the center out of the flywheel. I have lots of 1 3/4" hex aluminum which I use to make other prop drivers. I can post a picture of the shaft and a drawing of how I might make the adapter bolt onto the hub with the metric nut inside of it.

John