
Draining the fuel tank of a Ducati Monster motorcycle can be done in several ways. Some methods include using a siphon, disconnecting hoses, and removing the tank. While some owners opt to ride their bike until the fuel tank is empty, others suggest pulling a line off the fuel pump and turning the key on/off multiple times while catching the gas. It is important to note that the fuel pump relay is always hot and connected to the battery, so it should be disconnected before attempting any maintenance. Additionally, when draining the tank, it is crucial to ensure that the kickstand is down and that the key is not turned to the on position, as this could activate the fuel pump and cause fuel to discharge.
Ducati Monster Fuel Tank Draining Methods
| Characteristics | Values |
|---|---|
| Siphoning | The most common method, but some users have reported difficulties |
| Disconnecting Hoses | Disconnecting the hoses and letting the tank air out for two weeks before reconnecting and refilling |
| Using a Hand Pump | A cheap and safe option, but may not be effective for larger tanks |
| Removing Tank | Physically removing the tank, inverting it, and pouring fuel into a container |
| Running Engine | Running the engine with disconnected fuel lines to drain remaining fuel |
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What You'll Learn

Siphoning the fuel tank
To siphon the fuel tank of your Ducati Monster, you can use a simple siphon or a hand pump. Siphoning is a straightforward process, but it can get a little messy, so be prepared with some old rags or a drop sheet.
Firstly, you will need to locate the hose connected to the motor. Once you have found the hose, simply unplug it and aim it into a bucket or another suitable container. You can then turn the key, and the pump will prime, allowing the fuel to drain out.
If you are using a hand pump, you can attach it to the hose and pump the fuel out into your container. This method is a little quicker and easier, but you will need to purchase or source a pump. These are readily available and inexpensive, as mentioned by one Ducati owner, who notes that a "cheap hand pump at a place like Harbor Freight... [is] like $7 and is safe to use with fuels."
Alternatively, you can use the fuel pump to drain the tank. To do this, pull a line off the fuel pump and turn the key on/off multiple times, catching the fuel in a container. You can also route a large hose from the 'OUT' fitting on the fuel flange to a fuel container, and the pump will empty the tank in under a minute.
One Ducati owner has shared their experience of siphoning, which involved removing the tank and then inverting it over a small plastic tub. They then removed the filler cap assembly and poured the fuel out. This method is more complex and time-consuming, but it ensures that you can get all the fuel out of the tank.
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Disconnecting the battery
- Locate the battery: The battery is typically located near the fuel tank, but its exact location may vary depending on your Ducati Monster model. Refer to your owner's manual or seek guidance from a Ducati mechanic if you are unsure.
- Prepare the necessary tools: Gather the tools required for the job, such as a set of wrenches or sockets that fit the battery terminals, and a piece of cloth or towel to place the disconnected battery on.
- Disconnect the negative terminal first: Locate the negative terminal, which is usually marked with a "-" symbol or a black cover. Loosen the terminal clamp or bolt using the appropriate tool, and then carefully detach the cable from the battery terminal. Ensure that the cable does not touch any metal parts of the bike to avoid short circuits.
- Disconnect the positive terminal: Identify the positive terminal, marked with a "+" symbol or a red cover. Again, loosen the terminal clamp or bolt and detach the cable. Place the disconnected battery in a safe location, away from any metal surfaces or flammable materials.
- Insulate the battery terminals (optional): To prevent accidental contact or short circuits, you may choose to insulate the exposed battery terminals with electrical tape or terminal covers. This is especially important if you are performing the fuel tank draining procedure over multiple days or if the bike will be stored for an extended period.
- Re-connect the battery safely: Once you have completed the fuel tank draining process and are ready to re-install the battery, connect the cables in reverse order. Start by attaching the positive cable to the positive terminal, ensuring a secure connection, then do the same for the negative cable.
Remember, working with batteries and fuel can be dangerous, so it is essential to follow safety precautions. Always wear protective gear, such as gloves and eye protection, and ensure proper ventilation in your workspace. If you are unsure about any aspect of the process, it is best to consult a qualified mechanic or seek advice from a Ducati Monster forum or community.
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Using a drain tube
If you want to drain your Ducati Monster's fuel tank using a drain tube, there are a few methods you can try.
Firstly, locate the drain tube and the bleeder tube. Disconnect the fuel feed to the carbs and point it into a container. You can then open the petcock to allow the fuel to drain. If you have a full tank, you might want to siphon some of the fuel out first. You can use a PELA 6000 pump or a siphon hose with a bulb attached to drain the fuel into a container.
Alternatively, you can pull a line off the fuel pump and turn the key on/off multiple times while catching the gas in a container. You can also use the fuel pump to drain the tank, but this method is more complex and should only be attempted by those who are comfortable with the process.
If you want to avoid using a drain tube, you can simply ride your bike until the tank is half-empty, then top it off with fresh fuel. This will help to get rid of old fuel.
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Removing the tank
Before starting, ensure that you have the necessary tools, such as a bucket or container to catch the fuel, a siphon or hand pump (optional), and any tools required to remove the tank. It is also important to work in a well-ventilated area to avoid inhaling fuel fumes.
Begin by locating the fuel lines and hoses connected to the tank. Disconnect these lines carefully, being cautious not to spill any fuel. You may need to remove the filler cap assembly to access the lines more easily. Once disconnected, catch any residual fuel that may drip from the lines with your bucket or container.
Next, you will need to remove the mounting pins or hardware that secure the tank in place. This may vary depending on your Ducati Monster model, so refer to a workshop manual or seek advice from a Ducati forum if needed. Once the mounting pins are removed, carefully lift and remove the tank from the motorcycle, placing it on a flat surface or a stand.
With the tank removed, you can now drain the fuel. Place a bucket or container underneath the tank and remove the fuel pump and filter assembly. Invert the tank and pour the remaining fuel into the container. You may need to use a siphon or hand pump to remove all the fuel if tilting the tank is not an option. Ensure that you handle the fuel carefully and dispose of it properly.
Finally, once the tank is empty, you can proceed with any maintenance or repairs that require access to the now-drained fuel tank. Remember to re-install the tank securely and connect all fuel lines properly before riding your Ducati Monster again.
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Using a fuel pump
If you want to drain your Ducati Monster's fuel tank using a fuel pump, there are a few methods you can try.
Firstly, you can try using a siphon. This method involves pulling a line off the fuel pump and turning the key on/off multiple times to catch the gas in a container. You can also use a cheap hand pump from a place like Harbor Freight, which will cost you around $7 and is safe to use with fuels.
Another method is to unplug the hose to the motor and aim it into a bucket. Then, turn your key and let the pump prime. You can also try flipping the tank over and letting it air out, or using a siphon for this step. This method can be a bit messy, so be prepared to catch any spilled fuel.
If you want to get every last drop of fuel out of the tank, you can try removing the pump/filter assembly and pouring out the remaining fuel. This method may require you to remove the tank from the bike, which can be a big job.
Finally, if you have a drain valve, you can use it to drain the tank. Make sure to catch the fuel in a container and be careful not to spill.
Remember to always exercise caution when working with fuel and ensure that you are in a well-ventilated area.
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Frequently asked questions
There are a few ways to drain the fuel tank of a Ducati Monster. One way is to remove the tank and flip it over a bucket, then remove the fuel pump and get what's left in the tank. You can also use a siphon or a cheap hand pump to suck out the fuel.
No, you can drain the fuel tank without any special tools. However, if you don't feel comfortable doing it yourself, it is recommended to leave it to the professionals.
To safely drain the gas tank, make sure that you do not turn the key while the line is disconnected, as this can cause the fuel pump to charge.
You will hear when the tank is empty by the change in sound from the fuel pump.
It is not recommended to store your Ducati Monster with fuel still in the tank. If you need to store your bike, it is best to drain the gas tank first.








































