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So it won't work .correctThe 2 motors have a different spline in the crankshaft.
So it won't work .
I have a 1985 long shaft. Motor has a deep grove in bottom cylinder and the motor has less than 100 hrs. Someone had 2 1996 and 1998 motor for sale I was going to swap my shaft on to one of those but they r short shaft.Explain with more details what you are trying / need to do here.