Thank you for good alternative methods.
Love to have Plan "B", sometimes "C" etc. I would hate to paint myself into corner.
Overnight in the freezer, little heating with hot air gun, moderate power with press and it come out.
Pekka
*interesting thing is that the shaft and chuck hole are bit more under 8,00 than I expected. Luckilly I had a hunch and turned the drift diameter to 7,95 mm. Drift got stuc to chuck while pressed out the chuck from the shaft. I though there were debris, but looks like the chck ID is prety coles to that.
Now I have to remember that when I turn the pulley for this motor. Can't use reamer, it would make oversized hole for this motor shaft.