You have to unplug it from the unit by the carb. I'm thinkin you need to block off a vacum line too, but I'd have to look.
If yours is still hooked up, which gear is it, 2nd, or 3rd?
That selenoid is in a different location on a M22. Somewhere on the bottom. I remember we broke the one on mine when we put it in. Still need to take that thing out.