Home › Forum › Ask A Member › Fuel economizer setup for Johnson 35HPs adapted to 25HP? › Re: Fuel economizer setup for Johnson 35HPs adapted to 25HP?
August 23, 2016 at 1:00 am
#42535
The theory behind the fuel saver is that you bring the boat up on plane at full throttle, then back off on the throttle to the "cruise" position. That keeps the spark at full advance but partially closes the carburetor butterfly, presumably saving some gas. It works somewhat on a boat with adequate power. But if the motor struggles to maintain speed at WOT, then backing off to cruise throttle will lose the plane.