I have used my sister Kitchen Aid ice cream maker a few times so I am familiar with the attachment.  That was my good luck as the manual that came with the attachment had a totally different drive bar than the one advertised and sent.  I just trusted my memory and assembled the maker and it worked.  I have only given four stars to this product because of the poor manual of instructions.  Otherwise it's a great mixer and ice cream maker and I'm glad I bought both.