I have a cb750 -71.
And I noticed the battery wont charge.
I measured the rectifier and got 0.2V DC. So I continued with measuring the volt from the 3 yellow wires from the generator and got 0.2V AC so i think the rectifier is OK but something is wrong with the generator.

After some youtubing I measured the resistance between green and white from the motor and got 8ohm.
Between the yellow wires I got about 0.7ohm.
And neither of the cables are connected to ground.

Anyone got any tips?

Thanks guys!