Well , tried polarizing generator with a batter. No output from generator. Decided to take generator out and take a look. Dirty inside, wires look ok, field coils have continuity. Decided to sand brushes lightly to remove small amount of surface gunk and sprayed with electrical cleaner. Took some fine sandpaper and lightly sanded the copper armature where brushes spin because it was black. I figured there might be some resistance there and may not be making a good contact. I am in process of putting back together. I'll keep ya posted. Maybe with good brush contacy I can polarize this generator and get some output . MAYBE !