Dropped a valve, holed the piston and bent the rod on my ET4. AF 1 has replacement crank listed as 8412985, same number as for later LX150, so it is a LX150 crank. While it fits, you must also change out the cam drive gear to the LX150 (82782R) due to small machining differences. Also, you will not need the two 1mm thick crank spacers, as the counterweights are slightly wider at the bearing.