Remove the spindle as previously described. Remove the bottom casing by undoing the 4 securing screws. There are 3 wires that need swapping over from the old to the new case so mark them carefully.
There are 3 grommets in the top of the case, a bit difficult to get out but a smal screwdriver should do it. Undo the screws and the motor will come free. The new case has switches already in so just re connect the wires and slide the mortor in. You will need special ended screwdrivers that dont cost a lot and can be a life saver.
David Ayres, May 2024