Freightdog
CB750 Member
Yesterday I pulled into a rest stop and shut the bike off. When I attempted to start it again, the battery was dead. After push starting, I got to the next exit and noticed that my turn signals no longer worked. I chose to shut down and have the bike towed home. Removal and inspection of the battery found it almost dry with staining from the acid boiling over. Cleaned, re-filled, and charged the battery and it seems to be holding a charge. Ran the bike with a volt meter across the battery. Volts at the battery began at 12 volts at idle and dropped to 9 volts by 5000 RPM. I have not checked the stator output yet. Removal and inspection of the stator found one section of the stator ring worn down to shiny bare metal as if the rotor is making contact with it at that one point as it spins. Can't see how that is possible though. Any suggestions on a diagnosis or how to proceed? I had suspected an overcharging situation but obviously I was wrong.