So my friend just picked a 93 GSX-R 750. I rode it to his house and everything. We even stopped at a gas station and turned it off and on and everything was fine. Next day it won't start. I really dont know anything about choke, reserve, pri and all that. We think it was the battery, so we got it up a hill and tried to roll start it but nothing. We are now charging the battery with a charger but still nothing. It does click but nothing happens... does anyone know what to do?