Honda CTX700D 2018 Owner's Manual page 44

Refueling
Ignition key
Fuel fill cap
Do not fill with fuel above the lower edge of
the filler neck.
40
Shelter lid
Lower edge of
filler neck
Fuel type: Unleaded gasoline only
Recommended fuel octane number:
Pump Octane Number (PON) 86 or higher.
Tank capacity: 3.28 US gal (12.4 L)
#
Refueling and Fuel Guidelines
Opening the Fuel Fill Cap
Open the shelter lid.
a
Insert the ignition key, and turn it clockwise
b
to remove the fuel fill cap.
(P.14)