Will run on starting fluid but not on its own. Checked the fuel pump and it seems to work. Pictures show a electrical plug on the bottom of the carb that I'm not sure what it is supposed to do. If that checks out my next idea is to pull the carb for cleaning. Printed a user manual for reference and would like to find a service manual. New tires and battery are worth more than I paid for it. Also, how can I tell when it was made?