Small Engine Troubleshooting Problems? Ask a Mechanic Now.
Welcome to JUST ANSWER small engines, let me try to help you !! I don't know it all, but maybe together we can get you a satisfactory answer!
Make and model? What comes on with the key now? Usually a solenoid in carburetor and the voltage regulator are the two items. Try unplugging one of these as at a time.
I see question is still open, did you find short?