You mean the emergency drain hose leaks? If so where is it leaking...at the joint on the 90 degree plastic elbow inside the door, or has the hose itself got a hole in it. If it is leaking at the elbow joint you could try fitting a jubilee clip to stop the leak. If the hose has a hole then it will have to be replaced, you would need the front open to do this. Post again using this thread if you need instructions on how to open the front.
Mike
October 2009