I have a 1978 Honda 750F SOHC motorcycle. It has been very reliable up to now.
I allways keep the bike on a Battery Tender to assure the battery's health.
Yesterday, I took the bike out of the garage, and turned the key to the ''on'' position in preparation for starting. All the instrument lights (oil pressure, etc.) lit up correctly. However, after depressing the starter butoon, NOTHING happened...no starter motor noise, no cranking, NOTHING. I thought perhaps the bike was in gear and with the kickstand down, the starter motor was disabled, as it should be.
I turned off the ignition, sat on the bike, put up the kickstand, pulled in the clutch. Then I turned the ignition back on and depressed the starter button. I heard a ''click'' from behind the left side cover, under the seat and all the instrument lights turned off. The starter motor did not engage. The bike now appears to be completly dead.
I removed the left side cover and checked the three fuses in the fuse box. They are all fine. I checked the voltage on the battery and it was 11.99 volts. I checked the various electrical connectors under this cover and they are all fine and fully engaged. The wire harness looks new with no visble degradation of the wrap or insulation.
Any ideas where to look?
I am having the exact same problem (1978 Honda CB750 Four).... while starting with the electric starter, everything electric on the bike just died instantly, even the neutral light. Fuses are ok. I have no idea what to do, and I am sure it is not the battery's fault, because even if there were not enough amps to start the engine, there would still be enough for the neutral light. Something switched off instantly rather than faded out gradually. If you find an answer please let me know. I suspect the ignition coils but I'm not sure. Jeff
Take your battery and have it tested. just because you have voltage dosnt mean its there under a load
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