drill

Should my throttle go back to the original 0% throttle position when I let go of it? It is now doing that now, and before I start riding it I want to make sure it'll work right.. Any ideas on how to do this? Also, my drill is for some reason not drilling through the handlebar so I need to figure...

Picked up a bike and it has a shift kit on it. Some parts are missing though so I can't start up the engine. I noticed on the magneto there is a nut and if you turn it with a ratchet the piston moves. What if I hooked up a drill to it and tried to start the engine? Would it be ok and not destroy...