it is easy to change. take the screws off from the plate that is around the drain hose. then remove the drain hose. inside you will see a black hose attached to the pump. remove the black hose also. turn the machine on its side and remove the drive belt. turn machine back upright. in the window where the pump is there is several small screws back them out and save for later. the pump will come free and ready to replace.
depending on usage and water quality you should be able to get 5+ years before seals go bad.
bigV
June 2007