Honda 2006 CB600F Owner's Manual page 111

Fuel
2. Open the cap.
3. Add fuel until the level reaches the
bottom of the filler neck ( ). Avoid
overfilling the tank. There should be no
fuel in the filler neck.
Gasoline is highly flammable and
explosive. You can be burned or
seriously injured when handling
fuel.
Stop the engine and keep heat,
sparks and flame away.
Handle fuel only outdoors.
Wipe up spills immediately.
102
Servicing Your Honda
3
4. After refueling, push the fuel fill cap
closed until it snaps and locks.
5. Remove the ignition key from the cap.