Example: When you set the Flow Adjustment to +10% , a flow rate of 20 gal./hr (75 l/hr) would change to 22 gal./hr (82.5 l/hr), because

20 gal. × 110% = 22 gal. (75 l × 110% = 82.5 l).

•By default, when wired to a fuel gauge, the GFS 10 automatically detects the type of fuel gauge. If the fuel-level reading on your Garmin chartplotter or marine instrument appears to change with the engine RPM, the GFS 10 could be detecting the wrong type of gauge. When the boat is not moving, place the engine in neutral. If the fuel-level reading changes when you throttle the engine, change the gauge type.

Go to the configuration options for NMEA

2000 devices on your Garmin chartplotter or marine instrument to specify your type of gauge (1 coil or 2 coil).

Note: It is normal for the fuel level to change with the motion of the boat. Perform this test when the boat is not moving.

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