Honda CB650R 2021 Owner's Manual page 26

Instruments
Coolant temperature gauge
When the coolant is over specified temperature, the
segment H flashes.
If the segment H flashes while riding:
If the coolant temperature gauge indicator
flashes:
(P.108)
Fuel gauge
Remaining fuel when only 1st (E) segment starts flashing:
approximately 3.2 L (0.85 US gal, 0.70 Imp gal)
If the fuel gauge indicator flashes in a repeat pattern or
turns off:
(P.107)
NOTICE
You should refuel when the reading approaches the E (1st) segment.
Running out of fuel can cause the engine to misfire, damaging the
catalytic converter.
22
(Continued)
(P.102)