Hitachi Planer knobs

Does anyone know how to adjust the blade depth knob on the modified hitachi planer so its on a spring like setting. In other words, now when you turn the knob and let it go it stays in the spot where you turned it to. I would like it to turn back are you loosen the grip. So if I turned it all the way to the right for max depth, All I would have to do is ease up on the grip to lessen the blade depth. Good for rockers and rail bands.

Does anyone have theres set up like this.

-s

“keep calm and surf on”

He he, You said knob…

He he, You said knob…