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Harley-Davidson motorcycles have fuel tanks with capacities ranging from 4.7 gallons to 6 gallons, depending on the model. The fuel system in Harley motorcycles includes a fuel pump, fuel lines, and a fuel tank. When filling up the tank, it is important to avoid overfilling as it can lead to fuel overflow and leaks, especially when the bike is leaning on the kickstand or exposed to direct sunlight, causing fuel expansion. To avoid fuel overflow, it is recommended to avoid filling the tank to the rim and to park in shaded areas. In terms of fuel flow, Harley motorcycles have a fuel line that connects the fuel tank to the fuel pump, which delivers fuel to the engine. The fuel pump plays a crucial role in ensuring a steady flow of fuel from the tank to the engine, and any issues with the pump can impact the fuel delivery and motorcycle's performance.
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Fuel overflow
To prevent fuel overflow, it is recommended to avoid filling the tank to the very top and to avoid parking the bike in direct sunlight. If you do experience a fuel overflow, it is important to first identify the source of the leak. Check the fuel lines, pump, and injector terminals for any signs of leaks. If no leaks are found, it may be necessary to have a dealer or mechanic change the O-rings and hoses.
In some cases, fuel overflow may be caused by a faulty or damaged fuel tank or fuel pump. If you suspect this to be the case, it is important to consult a professional for repairs. Attempting to repair or replace these components without proper knowledge and tools can be dangerous.
Additionally, when dealing with fuel, it is crucial to prioritize safety. Ensure that you are working in a well-ventilated area and that there are no sources of ignition nearby. Always use appropriate fuel-safe containers and absorbents when collecting and storing spilled fuel. Properly dispose of the collected fuel at a designated facility or according to local regulations.
If you are looking to drain your fuel tank, there are several methods you can use. One method involves using a siphon hose to manually drain the fuel into a suitable container. Another method is to disconnect the fuel line and route it to a gas can. You can then jump-start the battery to the fuel pump fuse, causing the pump to empty the tank. Always refer to your bike's owner's manual or trusted online resources for specific instructions and safety precautions.
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$20.7
Draining the tank
Firstly, locate the gas cap, typically on top of the fuel tank. Unscrew the gas cap counterclockwise to remove it. This step allows air to enter the tank, facilitating a smooth fuel flow during draining. Place a suitable container, such as a gasoline-approved fuel can or a plastic container designed for fuel storage, directly under the gas tank. Ensure the container is large enough to hold the expected volume of fuel and is positioned securely to prevent spills.
Next, identify the drain plug on your Harley model. The location may vary, so consult your bike's owner's manual or trusted online resources for the exact position. If your Harley has a drain plug, use a suitable wrench or socket to loosen and remove it. Allow the fuel to flow out of the tank into the container. Be patient, as this may take a few minutes. Ensure that you avoid spillage and keep the container stable and secure.
Alternatively, you can use a siphon hose to drain the tank. This method is useful if you want to avoid dealing with electricity and fuel. Simply insert the hose into the tank and let the fuel flow into a suitable container. Another option is to disconnect the fuel line that goes to the fuel rail for the injectors and route it to a gas can. Then, jump-start the battery to the fuel pump fuse, and it will pump itself empty.
Once the tank is drained, securely reinstall the drain plug or gas cap. If any fuel has spilled, clean it up immediately with appropriate absorbent materials. Store the collected fuel in a safe and designated container for proper disposal, following local regulations. Remember to keep all fuel lines clean and be mindful of fire hazards during the draining process.
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Tank capacity
The fuel tank capacity of a Harley-Davidson motorcycle varies across models and years. For instance, the 2015 Street Bob model has a tank capacity of 4.7 gallons, while the 2016 VStrom model boasts a larger tank capacity of 5.3 gallons. The 2011 Heritage model falls in between these two with a 5-gallon tank.
Some Harley-Davidson owners have reported discrepancies between the specified tank capacity and their actual experience. For example, one owner of the 2015 Street Bob model stated that the most fuel they were able to put in the tank was 2.8 gallons, despite the specified capacity of 4.7 gallons. This has led to some owners seeking advice on fuel mileage and how far they can travel on a single tank before needing to refuel.
It is worth noting that Harley-Davidson fuel gauges have a reputation for being inaccurate, as mentioned by one owner who claims to have the only Harley with an accurate gauge. This inaccuracy may contribute to the reported discrepancies in tank capacity.
When it comes to fuel efficiency, Harley-Davidson motorcycles can vary significantly. For example, one owner of a 2007-efi wideglide model reported getting around 120 miles before needing to refuel, while another owner of a 2011 Ultra model averaged 34.8 miles per gallon during an Iron Butt ride.
For those seeking even greater fuel capacity for extended rides, aftermarket options are available. Custom fuel tanks, such as the sissy bar drum tanks, can provide additional fuel storage. These auxiliary tanks can be installed behind the primary tank and even include a fuel pump to transfer fuel to the main tank while riding.
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Fuel gauge accuracy
There are a few potential reasons for fuel gauge inaccuracy. One possibility is a blocked, kinked, or otherwise obstructed fuel line, preventing fuel from flowing properly. Another factor is fuel expansion due to sitting in the sun, which can cause overflow and affect the accuracy of the gauge. Additionally, the fuel pump may be a factor, as some owners have reported issues with the pump causing fuel to spray or leak.
To improve fuel gauge accuracy, it is recommended to regularly check and maintain the fuel lines, fuel pump, and other fuel system components. Owners should also be mindful of fuel expansion in hot weather and avoid filling the tank to the very top to prevent overflow. Harley-Davidson owners can refer to their bike's owner's manual for specific maintenance instructions and tips for improving fuel gauge accuracy.
In addition to the fuel gauge, some Harley-Davidson owners have reported using other methods to monitor fuel levels and improve accuracy. One method is to reset the trip meter after each fill-up and keep track of the miles ridden since the last refill. Another approach is to use a fuel-safe siphon hose to drain the tank and then refill it, which can help improve accuracy by ensuring the tank is truly full. Some owners also choose to carry an extra gallon of gas in a gas can as a precaution, especially for longer rides or trips.
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Removing the tank
Removing the fuel tank on a Harley-Davidson motorcycle is a relatively straightforward process, but it is always recommended to refer to the factory service manual for specific instructions for your particular model. Here is a general guide on how to remove the fuel tank on a Harley-Davidson motorcycle:
Step 1: Disconnect the Battery
Before beginning any work on your Harley-Davidson, it is important to disconnect the battery to prevent any accidental electrical issues. Make sure the ignition is turned off, and then locate and disconnect the negative terminal of the battery.
Step 2: Drain the Fuel
The next step is to drain the fuel from the tank. Locate the "Petcock" valve at the bottom of the tank and turn it off. This valve controls the flow of fuel. Then, attach a "fuel-safe" hose from the Petcock valve to a fuel can to drain the remaining fuel from the tank.
Step 3: Disconnect the Fuel Line
Locate the quick disconnect fitting on the fuel line and disconnect it. You may need to prepare a piece of tubing by hose clamping a bolt at one end to facilitate the fuel drainage. Be careful not to spill any fuel during this process.
Step 4: Remove the Crossover Tube
Cut the clip on the crossover tube at only one end. Then, pull the tube and direct it into a fuel can to catch any remaining fuel. Simultaneously, place the prepared tubing over the nipple on the tank to ensure a controlled drainage.
Step 5: Loosen the Bolts
With the fuel drained, you can now loosen the bolts at the front and rear of the fuel tank. Be cautious, as these bolts may also be holding the trim piece in place. Once the bolts are loosened, you should be able to carefully lift and remove the fuel tank.
Step 6: Reinstallation
When you are ready to reinstall the fuel tank, simply follow these steps in reverse. Ensure that all connections are secure and properly tightened before turning on the ignition and starting the motorcycle.
It is important to note that these steps may vary slightly depending on the specific model of your Harley-Davidson motorcycle. Always refer to the official service manual or seek assistance from a qualified Harley-Davidson technician if you are unsure about any part of the process.
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Frequently asked questions
To drain the fuel from your Harley gas tank, first, unscrew the gas cap to allow air to enter the tank. Then, place a suitable container underneath the gas tank. Next, identify the drain plug and use a wrench or socket to loosen and remove it. Allow the fuel to flow out into the container, being careful to avoid spillage. Once the tank is drained, reinstall the drain plug and tighten the fuel line connection.
To prevent fuel overflow on your Harley, avoid filling the tank to the very top and do not park your bike in direct sunlight, as this can cause the fuel to expand and overflow. It is also recommended to avoid filling the tank while the bike is leaning on the kickstand, as this can cause leaking.
The fuel tank capacity of a Harley can vary depending on the model. Some models have a fuel tank capacity of around 4.7 gallons, while others may have a capacity of 5.3 gallons or more. The fuel mileage can also vary, with some models getting around 35 miles per gallon in town and up to 42 miles per gallon on the highway.
