Does it have a kill switch or not? Your kinda contridicting your self there. It it has a kill switch, there should be a removable tether your suposed to attach to your ass so when u crash it comes ouf of the kill and shuts the machine off.
I know your not dumb, so I assume you mean the thumb switch for off/run/start button.
Stators are expensive but they can be found online cheap. Same for the CDI.
The stator usually slowly dies, doesnt just loose all power output for no reason, something isnt connected. Gotta get a volt meter out and probe your way aorund it. there isnt really any way around that.