mooseheadluke
XS650 Member
I have a 1980 XS650 Special and it will not charge its battery. I thought it was the battery because it was old, so I replaced it, but it was not the battery. Then I opened up the cover on the alternator and replaced the brushes because they are cheap and easy to replace. That didn't fix it either. So now I want to test the other parts of the charging system like the stator winding, rotor, voltage regulator, rectifier (I think it and the regulator are all one part?) Anyways, does anyone have any details on how to test these things so I can isolate the problem. I know that you can test the rotor with a ohmmeter across the two rings, but I don't know the ohmic value I should be seeing. FYI, After it I jumpstart it and its running, when I rev the engine I get about 6.5 volts trying to charge the dead battery .
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