Look for a sticker or label on the bracket that has the actual model number on it. You'll need that to look up the diagrams. A year of manufacture would be helpful too.
Many are screwed together with some sealant. Some are pressed.
You will have to extend the wiring to match the new shaft length.
The only numbers I can find is a sticker behind the prop that says
p/n 2039070
02/17/95 c1
Its a 27 pound thrust motor. I took the motor its self apart to see if the shaft was pressed or had threads but I couldn't really see anything. Wiring is not a problem. I didn't motor cycle wiring for years. I plan on changing them anyway cause a couple have bad spots in them.