I have a Hoover 600mb which has the same problem. I just changed the control unit for the motor and the problem is fixed. I believe that most of the washing machines have the same unit. I bought the replacement part from Electrolux for $70 and the part number is 0628271101 and its just a matter of changing the unit by pulling the plug out of the old and putting in the new one.
Ted from Darwin, October 2008