I recently had purchased an older Lincoln Weldanpower 150 with a Kohler engine. The engine runs great. As for output power, not so much. I have read about flashing and doing all kinds of other tricks with no such luck. I recently contacted Lincoln and this is what they told me. My machine has a circuit that flashes the main alternator each time the machine is started. On some machines, the exciter field could be flashed to restore residual magnetism to the poles but this machine will not maintain residual magnetism. It must be flashed from a DC power source each time it is started. The DC power source used for this is a special coil inside the Kohler engine. I have searched Kohlers website and I couldn't find anything useful. I couldn't even find my engines model there. If anyone knows anything i would be greatly appreciated. Such as where this coil is located and where i can find a replacement part.