I spoke w/t a tech the other day about the same issue I am having. He instructed me to take the left wheel and hub off and the left fender as you are sitting on the mower and you should be able to slide the shaft out from the right side in order to put the boots on. I havent had a chance to try it out to see how well the shaft slides out but I know the hub is being a pain to get off.
Mitch, April 2009
RS 120 28 INCH RIDING LAWN MOWER CANT DO SERIAL # SORRY
GARY WHITE, September 2005
post the model # and serial # off the rider and I should be able to get you some info