Remove yellow outer shell (3 lugs, 1 each side & 1 at front - pointy end) - may need to release the lug clamps from underneath with flat screw driver they pull out slightly.
Remove the cover by the +/- control.
The detergent container is a ring doughnut style, held onto the +/- control by two plastic prongs. It should lift off easily, though may be sealed to the control mixer. If replacing the container, then just pull it off.
- Mine was cracked at the feed to mixer so fell off at this stage.
chedog, May 2010