I will make the attemptto explain the process and caution. Short version. as the gen comes up to speed it makes voltage due to the residual magnetism in the field poles (iron, not copper). Because it is not connected to the loads and battery (cutout open) the voltage can get high enough to begin charging the battery. the pull in winding on the cutout relay is grounded on one end inside the VR. The other end is connected to the Gen armrture. if this coil is open, the pulin will not work. If the air gap of the cutout is too wide, or the spring tension is too strong, the cutout will not pull in. Once it is latched in, the current running through the cutout relay current winding holds it in. As the generator stops rotating fast enough to charge the battery, the current will begin to flow into the gen instead of out of it. This reversed current fights the pull in current's magnetism, and the relay breaks the connection at about 2 amps negative. If you feel like playing with it, and if it stays latched when pushed in manually, try tightening the air gap of the cutout might be useful. Running the tractor at 3/4 throttle, use a plastic fork handle or such non-magnetic item to carefully and incrementally push in on the cutout contact. If it pulls in on its own from just a little closer, adjust the little gap stop bracket to close the gap just that much. Try it again to see if it now pulls in on its own. If yes, cool. try it with the lid on the VR (it affects the magnetism). Make sure the cutout opens successfully when the tractor is shut off or it will possibly let the smoke out of the generator if it fails to open. Do not get carried away. Jim
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