When I picked up the generator from the shop, I was told the brushes were stuck away from the commutator (I think that is the right term) and the bearings were shot. He said it looked like the generator had been out in the weather for awhile. So that is why I am wondering about the regulator. Maybe the inside of that is all corroded up?????
It is easy to change the wires around on the amp gauge. When I was running it I did not see a charge going backwards through the amp gauge.