With the valve turned to auto, the livewells will fill to be even with the lake level. On empty, it will prevent lake water from entering but will let water out of the livewell until it is even with the lake level if you are on the water. When you are running or on the trailer the remaining water will be let out of the livewell. So if you want livewells empty, switch to empty before putting in the water. If water is still coming in, there is probably a loose cable or worn flapper in the valve. If you want livewells full, switch to auto and run aerators and livewell fill (if equiped). If livewells drain when pulled out of the water (when switched to auto) there is probably a loose cable, worn flapper or the switch isnt all the way on auto. Hopefully this answers your question.
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