Product review (5 stars): Fan blade does come out easily!!
first off, the fan motor assembly is a perfect fit.  No modifications needed.  A previous review stated that he had to modify the wires and blah blah blah but he obviously ordered the wrong motor assembly for his fridge model.
also, the original fan blade does come off..EASILY!
lay the entire fan motor/housing on its back, take spring out and then simply push down on the housing while at the same time pulling up on the fan blade, and then BAM!  You did it!!  You just saved ten more dollars big guy.
entire install takes about 60 seconds. plug and play