Will do my best to answer this question as I too searched the net for an answer and found no responses. In the end I just had to figure it out for myself.
Anyhow, the tap handle had to be removed first by loosening the hex screw concealed behind the dork red & blue logo. I just used a knife to remove the plastic cap and then an allen key to remove the handle.
I could then remove the cover, which revealed the large bolt that secures the assembly in place. After the bolt was removed I used a pliers to remove the tap lever asssembly. It can be just pulled straight out, no unscrewing required.
This reveals the hot/cold washers, each of the 2 washers sits on a spring in the cavity.
AJ, November 2008