As per my users manual for my 99k28, you just turn the lens and it will fall out. I had to dampen my finger tips so I could get the lens to turn and it did and it came out.
Looking into the light once the lens was removed, there is a small retaining clip. It is a small, thin piece of spring metal that goes around the circumference of the light. When I just removed the lens, the retaining ring broke in half. The lens will still stay in, but there is a wiggle in it. As my 99k in in a Cadet cabinet, I will just have to remember to be careful when I lift the machine in & out.
Last edited by tscweaves; 01-14-2018 at 08:03 PM.
Reason: additional info