I just found a Kenmore 117.59. I found the drive wheel but have no clue how to put it on. I can't find this anywhere on utube or on the web. Can you point me in the right direction?

Try searching with the words "friction wheel"

Cari

There's a set screw on the pulley. Make sure it's screwed out far enough that it doesn't prevent the pulley from sliding onto the motor shaft. The shaft will often have a hole or groove that the screw fits into, but sometimes the shaft is solid and the screw just tightens onto it.