Hmmm... moved my pic, and tried to edit my post, but can't figure that out. Am I missing something?
I'll work on the model/year info, and I have more to add (when I can).
As for the on/off... all on/offs come apart. Usually they unscrew (with heat to break the loc-tite), but I believe on the EGO, the pin is pressed in.
Here is the pic again:
