To change the drive belt from the electric motor to the drive gear, remove the top cover by unscrewing the two retaining screws. undo and remove the screw holding the retaining bracket to the motor assembly. Undo and remove the three screws holding the motor bearing in place, remove the bearing assembly. Undo and remove the two screws and washers holding the motor assembly to the mower. Fit the new belt around the motor and drive gears noting the correct direction of travel of the belt (printed on the new belt). Reassemble in the reverse of this procedure.
Kevin Rushworth, September 2008