See Safety First → Safe Operating Rules and review the following safety procedures.
WARNINGAvoid spills. Slowly open fuel filler cap. Do not fill above bottom of filler neck insert, leaving air space for fuel expansion. Secure filler cap after refueling. Gasoline is extremely flammable and highly explosive, which could result in death or serious injury. (00028b)
WARNINGDo not store motorcycle with gasoline in tank within the home or garage where open flames, pilot lights, sparks or electric motors are present. Gasoline is extremely flammable and highly explosive, which could result in death or serious injury. (00003a)
WARNINGDo not use aftermarket fuel caps. Aftermarket fuel caps may fit improperly and leak, which could lead to death or serious injury. See a Harley-Davidson dealer for approved fuel caps. (00034a)
NOTICE
Do not spill fuel onto the motorcycle while refueling. Immediately wipe up fuel spills on your motorcycle. Fuel can cause damage to cosmetic surfaces. (00147b)
NOTICE
Use only unleaded fuel in catalytic converter-equipped motorcycles. Using leaded fuel will damage the emission control system. (00150c)
See Figure 1. Do not overfill the fuel tank. Insert the pump nozzle into the filler hole. Do not fill the tank beyond the bottom of the filler neck. A warm engine, the sun or extreme temperatures can cause the fuel to expand. Fuel can spill out of the tank and damage the finish. See Safety First → Safe Operating Rules.
Figure 1. Fuel Level below Filler Neck
FLHR, FLHRC, FLHRXS
See Figure 2. The fuel filler cap is on the right side of the fuel tank. Some vehicles have a locking fuel cap.
The cap on the left side is the fuel gauge. The fuel gauge is not removable.
Other Models
The fuel filler cap is beneath a pushbutton or locking door on the fuel tank.
Pushbutton fuel door: See Figure 3. Push button to release the door.
Locking fuel door: See Figure 4. Unlock fuel door with the ignition key. Lock fuel door by removing key and closing fuel door.
Fuel Filler Cap Operation
Remove: Turn fuel filler cap counterclockwise to remove.
Install: Turn fuel filler cap clockwise until it clicks. The ratchet action of the cap prevents over-tightening.
| 1 | Fuel gauge |
| 2 | Fuel filler cap |
Figure 2. Fuel Tank: FLHR, FLHRC
| 1 | Pushbutton |
| 2 | Fuel cap |
Figure 3. Pushbutton Fuel Door
| 1 | Lock |
| 2 | Unlock |
Figure 4. Locking Fuel Door