Yanmar 1GM Fuel Consumption
We have a Bayfield 25 with a 1GM Yanmar.
We seem to average about 1L/hr on the motor at 2700 to 3000 RPM.
We don't have a fuel gauge. We dip the tank regularly.
We figure we can do a work week (in a manner of speaking) on one tank (40L).
Hope this helps a little.