when on final spin my machine makes a thumping noise but at no other time. When turning the drum by hand it moves freely with no wobble or "give"

Ian Mann, March 2009

before stripping to check spider assembly check the lock nuts that hold the counter weights in place they can come undone even with lock nuts fitted
The top weight is accessed by removing the lid, 3 screws at top rear of the machine.
The bottom weight is via the rear lower panel 6 screws . a tell tale sign that the weight is LOOSE is concrete dust on the floor.

wirecutterman, March 2009

Could be the drum support has cracked, its not always obvious without stripping down but try lifting the inner drum up and down at the three points that correspond to the lifter positions

4narow, March 2009