Hello stevie,
I have changed bearing on the WMA range and I would not recommend it if your model is an all in one casing which means that if you have to get to the bearing you have to take the whole insides out from the front, not an easy job, no special tools needed except a heavy hammer to get the old bearing out, good luck to you, knowing what I know now, I would have replaced the machine right there and then.
Ken
drivewithken@blueyonder.co.uk, June 2007