crankshaft problem 50hp 96 mercury 2stroke 3 cylinder

[joachim]

Hello guys,
I have a problem with the Flywheel and crankshaft of my 96 50hp Mercury 2 stroke 3 cylinder. There were issues with the stator and switchbox and while testing what was wrong the key in the shaft broke several times. Until that problem was recognized, the shaft and flywheel (the part where it sits on the shaft) were worn out and the flywheel had some play, which again led to the key braking all the time.
I bought a new flywheel but it seems like it still has some play. This would indicate that the shaft is worn out too much as well.
I have some pictures of the shaft here:

https://www.dropbox.com/s/bt7vmzv63y...426_163147.jpg
https://www.dropbox.com/s/ar8gft8wii...426_163157.jpg

My question now is if if there is anything to do, to fix the flywheel to the shaft, like with some special glue or fill the small gap (it can only be like half a millimeter or so) with some kind of metal.
Or would I have to change the shaft in any case?? And if yes, how much working hours would a mechanic need for that?? Would that be economical after all for such an old engine??

Thanks a lot in advance for your help,

Jo

[boats.net]

I have never tried to glue a flywheel on and not sure if can be done, probably have to replace shaft or remove it and see if machine shop could repair it.