I cleared my headlight a few months back, and you have to bake the light assembly in the oven (220 deg. for 15-20 min.) to get the cement goop on the housing to loosen up. I really don't think there is another way to get the lens off.?.?.? Someone will correct me if i'm wrong.....
http://www.iwsti.com/forums/how-inst...eadlights.html