Take the lid off, there will be a huge jubilee clip, possibly screw fitting or just push connector adjcent to front wall. fitting to the drum is just a push fit
on reassembly MAKE SURE that it is seated correctly, you might want to lube the sealing faces with washing up liquid to make it easier
if there is a protusion on the inside edge (flicks your washing back into the drum) put it at 7 o'clock
Andrew Wootton, October 2010