wiper likage

I took my 1996 C180 into the garage last week because the windscreen wiper was sticking and then stopped although it worked when I pushed the scoosher. The electrician told me it needed a new switch, which he replaced and charged me for. As I was driving it home the wiper stopped again. It works...

I have a 2003 C200K. Fantastic car. The passenger side wiper isn't working I guess its a problem with teh linkage. Question is how do I remove the cover to inspect it?