Mercedes Mullins
Draining the fuel tank of a Suzuki SV650 motorcycle can be a challenging task, requiring careful attention to various steps. While some recommend disconnecting the fuel hose and using a vacuum pump or a hand-pump siphon to drain the tank, others suggest more complex procedures involving jumping wires and manipulating the fuel pump. One method involves removing the rider's seat, unscrewing bolts, and pulling up on the front of the tank to access the fuel hose and outlet pipe, which can then be directed into a gas can. Another approach involves manipulating the wiring connectors and using a wire to connect the fuel pump to the battery's positive terminal, causing the fuel to drain into a gas can. It is important to consult official manuals and guides for safety and accuracy before attempting any of these procedures.
How to drain an SV650 fuel tank
| Characteristics | Values |
|---|---|
| Required tools | Electric fuel pump, hand-pump siphon, vacuum pump, 5mm Allen wrench, 5-gallon gas can, small length of wire |
| Step 1 | Disconnect the fuel hose from the carburetor |
| Step 2 | Extend the fuel hose to a container |
| Step 3 | Turn the petcock to reserve |
| Step 4 | Turn on the ignition |
| Step 5 | Let the tank drain |
| Alternative methods | Use a siphon, jump the wires from the pump connector to the battery, remove the tank and turn it upside down over a funnel |
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What You'll Learn
Disconnect the fuel line and use a vacuum pump
To drain an SV650 fuel tank using a vacuum pump, you will first need to disconnect the fuel line.
Begin by locating the fuel line and carburetor. Disconnect the fuel line from the carburetor, and ensure that you have a container ready to collect the fuel. You can extend the fuel line to the container, which should be large enough to accommodate the fuel.
Once the fuel line is disconnected and extended to the container, you can turn your petcock to reserve. This will ensure that the entire fuel tank is drained. Depending on the amount of fuel in the tank, this process may take some time.
Now, you can introduce a vacuum pump. A vacuum check valve is present in the petcock. Place the feed hose into the gas can and use the vacuum pump to create a vacuum in the check valve. This action will open the valve and initiate the draining process. You can also use a vacuum hose by sucking on it, pinching it, and then clamping it.
Alternatively, you can attempt to jump the wires from the pump connector to the battery. This method involves connecting the yellow/black and yellow/red wires at the fuel pump relay to the positive terminal on the battery, which will drain the tank. However, it is important to exercise caution to avoid any potential electrical issues or damage.
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Use a hand-pump siphon
To drain an SV650 fuel tank using a hand-pump siphon, follow these steps:
Firstly, purchase a hand-pump siphon from an auto store or a home improvement store. The DuraHeat Plastic Siphon Pump DH-10 from Home Depot is one such option, costing around $3.
Next, open the throttle and locate the vacuum check valve in the petcock. Place the feed hose of the hand-pump siphon into a gas can or container, and ensure it is secure. You will need a container that can hold at least 5 gallons to avoid having to empty the tank multiple times.
Now, use the hand-pump siphon to create a vacuum by pumping it a few times. This will help draw the fuel out of the tank. Place the hose of the hand-pump siphon into the vacuum check valve and continue pumping to maintain the vacuum. You may need to tilt the tank to ensure the fuel flows out effectively.
As the tank empties, be careful to kink and pinch the vacuum hose closed to control the flow and avoid any spills or messes. You may need to do this process a few times to completely empty the tank, especially if your SV650 has a full tank.
Finally, if you want to ensure the tank is completely empty, you can run the engine until all the remaining fuel is gone. Alternatively, you can try tilting the tank and turning it upside down over a funnel into a gas can to capture the last bits of fuel.
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Disconnect the fuel hose and use an electric fuel pump
To drain an SV650 fuel tank, one method is to disconnect the fuel hose and use an electric fuel pump. This process involves several steps and requires some knowledge of the bike's fuel system. Here is a detailed guide on how to do it:
Firstly, locate the fuel hose. This hose connects the fuel tank to the throttle body or carburetor. Disconnect the fuel hose from the throttle body or carburetor, being careful not to spill any fuel. You may need to prop up the front end of the fuel tank to access the hose easily. Ensure you have a container ready to catch the drained fuel.
Next, you will need to use an electric fuel pump to create pressure and drain the tank. Place the disconnected fuel hose into your container, ensuring it is secure and will not slip out. You can use a larger hose to extend the fuel hose and ensure it reaches the container without bending or kinking. Now, turn on the ignition. The electric fuel pump will attempt to build fuel pressure, and you should see the fuel begin to drain from the tank.
It is important to note that the fuel pump may only run for a few seconds at a time when using the ignition, so you may need to find a way to keep it running continuously. One method suggested by SV650 riders is to jump the wires on the fuel pump relay to keep the pump running. Specifically, you can use an 8-inch wire to connect the Yellow/Black and Yellow/Red wires at the fuel pump relay to the +12 battery terminal, as described by several users. This will keep the pump running and drain the tank dry.
Always exercise caution when working with fuel and electricity. Ensure the area is well-ventilated, and avoid any potential sources of ignition. It is also recommended to wear protective gear, such as gloves and eye protection, when handling fuel and disconnecting hoses.
By following these steps, you should be able to successfully drain your SV650 fuel tank using an electric fuel pump.
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Disconnect the fuel pump connector
To disconnect the fuel pump connector, you will need to first remove the rider's seat. This can be done by taking off each of the bolts from the underside of the front of the rider's seat with a 5mm wrench Allen set. Once the bolts are removed, lift the seat up and away from the gas tank.
Next, you will need to access the fuel pump. This may involve removing the fuel tank, which can be done by following the steps outlined in the sources. However, it is important to note that removing the fuel tank can be difficult and may require experience. If you choose to remove the tank, be sure to label each tube and plug to ensure proper reassembly.
With the fuel pump accessible, you can now disconnect the connector. The connector will be attached to the wiring harness or ECM (Engine Control Module). Gently pull on the connector to disconnect it from the fuel pump. Be careful not to damage any surrounding components.
Once the connector is disconnected, you may need to catch any residual fuel that leaks out with a small towel or container. It is normal for a small amount of fuel to leak out when the connector is disconnected.
By following these steps, you will have successfully disconnected the fuel pump connector on your SV650. Remember to refer to your SV650 manual or seek professional assistance if you are unsure about any part of the process.
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Remove the tank and turn upside down
To remove the tank, you will first need to disconnect the fuel pump connector, two emissions control hoses, and loosen the clip holding the fuel hose onto the fuel pump. You can then pull the hose off, catching any fuel that leaks out. Next, remove the bolts from the underside of the front of the rider's seat using a 5mm wrench Allen set. Raise the seat up and away from the gas tank and remove it from the motorcycle.
Now, use a 5mm Allen wrench to unscrew the two bolts on the front side of the gas tank. Pull up on the front of the tank and support it in place with a tank support rod securely attached to the frame of the motorcycle. Cover the fuel hose on the lower edge of the gas tank and remove the hose from the gas tank's outlet pipe.
At this point, you can turn the tank upside down over a container to drain the remaining fuel. If you want to completely empty the tank, you may need to use a siphon or pump to get the last remaining drops out.
Once the tank is drained, you can then reattach the fuel hose to the pipe, lower the tank onto the frame, and reinstall the seat, tightening the bolts.
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Frequently asked questions
Draining the fuel from the tank of your SV650 can be done in several ways:
- Disconnect the fuel hose on the throttle bodies side and insert the fuel hose into a fuel can.
- Turn on the ignition and use an electric fuel pump to drain the tank.
- Disconnect the fuel line from the carburetor and extend it to a container. Turn the petcock to reserve and let the fuel drain.
- Use a vacuum pump to create a vacuum in the vacuum check valve, which will open and allow the fuel to drain.
You will need a few tools to drain the fuel tank of your SV650:
- A 5mm Allen wrench to remove the bolts from the underside of the rider's seat and the front of the gas tank.
- A tank support rod to securely hold the tank in place.
- A 3-foot length of plastic tubing to connect to the outlet pipe and direct the fuel into a gas can.
- A vacuum pump or a hand-pump siphon to create a vacuum and drain the fuel.
Yes, here are some precautions to consider:
- Work on your SV650 when the light is solid, indicating very little gas, to minimize the amount of fuel handled.
- Label each tube and plug to ensure proper reconnection.
- Be cautious when handling fuel and use a small towel to soak up any spilled fuel.
- Ensure proper ventilation when working with fuel to avoid inhaling fumes.
The frequency of draining the fuel tank of your SV650 depends on various factors such as usage, storage, and maintenance. It is recommended to drain the fuel tank when performing repairs, replacements, or maintenance involving the fuel system. Regularly inspect the fuel system for any leaks or issues, and drain and refill the tank with fresh fuel if necessary. Additionally, consider draining the tank when preparing your SV650 for storage during winter or extended periods of non-use.
