Honda CRF300LR 2021 Owner's Manual page 36

Instruments
3 Changing the speed and mileage unit:
Press button to select either "mph" and
SEL
a
"mile" or "km/h" and "km".
Press button. The speed and mileage
SET
b
unit is set, and then the display moves to the
changing the fuel mileage meter unit.
32
(Continued)
4 Changing the fuel mileage meter unit:
When the "km/h" for speed and "km" for
a
mileage are selected
Press button to select "L/100km" or
SEL
"km/L".
Canada only
When the "mph" for speed and "mile" for
mileage are selected
Press button to select "mile/L" or
SEL
"mile/gal".
When "mile/gal" is selected, the unit of
u
the fuel consumption is changed to "gal".
Press button. The fuel mileage meter
b SET
unit is set, and then the display moves to the
ordinary display.