success adjusting shurflo revolution
Using my adjustable water pressure regulators gauge via a mess of adapters on the outside shower I have success. With just a trickle of water running the pump cycled on and off from 45 to 35 psi. Turning the center Allen head screw clockwise slowly I reached a point where the cycling was from around 45 to 55 psi. This was around a quarter turn. Next I adjusted the bypass counter clockwise till it started to bypass. You can clearly hear this as a cavitation sound. This was around two full turns.
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