hi I have just done that and it isn't easy .. you have got to take off the moulded carcus first and then the cutting blade and then the pulley. It is a good idear to take a few pictures so when you reassemble you do everything correctly.the blade will be a pig to get off but go to your tyre supplier and get him to use his air nut gun on it..saves a lot of work..good luck
Michael
Michael, July 2009
