Honda CB1100NA 2018 Owner's Manual page 30

Instruments
Changing of mileage units:
After clock setting, the mileage unit starts
a
flashing.
Press A-button to select either km or mile.
b
Press B-button. The mileage unit is set, and
c
the display moves to changing of the fuel
mileage unit.
26
(Continued)
Changing of fuel mileage units:
After changing of the mileage unit, the fuel
a
mileage unit starts flashing.
Press A-button to select either km/L or L/
b
100km.
If the "mile" for mileage is selected, press the
A-button to select either "mile/L" or "mile/
gal".
Press B-button. The changing of the fuel
c
mileage unit is set, and the display returns to
the ordinary display.