Garmin G1000 Pilot's Manual page 105

Fuel calculations are based on the fuel flow totalizer and the displayed fuel remaining (GAL REM), adjusted by
the pilot using the following softkeys:
• DEC FUEL – Decreases totalizer-based fuel remaining in one-gallon increments
• INC FUEL – Increases totalizer-based fuel remaining in one-gallon increments
• RST FUEL – Resets totalizer-based fuel remaining (GAL REM) relative to the aircraft' s fuel capacity and sets the
displayed fuel used (GAL USED) to zero
Adjusting the fuel totalizer quantity:
From the Fuel Display, press the DEC FUEL or INC FUEL Softkey to obtain the desired number of gallons
remaining (GAL REM).
Resetting the fuel totalizer:
From the Fuel Display, press the RST FUEL Softkey. This resets the displayed fuel remaining (GAL REM) to 50
gallons (or 76.4 gallons if optional aux fuel tanks are installed). The fuel used (GAL USED) is reset to zero.
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Figure 3-6 Fuel Display
Garmin G1000 Pilot's Guide for the Diamond DA42NG
ENGINE INDICATION SYSTEM
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