
If you're looking to drain the fuel tank of your Honda generator, there are a few methods you can try. One common method is to use a fuel stabiliser like Stabile or Seafoam to prevent the gasoline from causing problems. Alternatively, you can drain the fuel tank by tilting the generator so that the fuel gathers in one corner of the tank and absorb it with rags, or disconnect the fuel line from the fuel injector and place it inside a container. If you're looking to drain the fuel tank of a Honda EU2000i generator, you can follow the steps outlined by several users who have experience with this specific model.
How to Drain Fuel Tank Honda Generator
| Characteristics | Values |
|---|---|
| When to drain | If storing for over two months without anticipated use |
| Fuel type | Non-ethanol or non-alcohol gasoline is better for storage |
| Fuel stabilizer | Use fuel stabilizer to prevent gasoline from causing problems |
| Fuel filter | Ensure the "T" and drain valve is between the filter and the tank |
| Fuel line | Disconnect the fuel line from the fuel injector and place it inside a container |
| Fuel valve | Turn the fuel valve to on and let the gas drain into a container |
| Carburetor | Drain the carburetor bowl and clean it |
| Fuel pump | Connect 12v to the fuel pump to get it to drain the tank |
| Fuel float | Old gas may affect the fuel float with some varnish |
| Fuel float | Old gas may affect the fuel float with some varnish |
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What You'll Learn

Using a fuel stabilizer to prevent the gasoline from causing problems
If you don't plan on using your Honda generator for a long time, you should consider using a fuel stabilizer to prevent the gasoline from causing problems. Fuel stabilizers can be purchased at automotive stores and hardware stores. They are a great way to ensure your generator will start right up after being idle for a while.
Fuel stabilizers are especially useful if you need to rely on your generator in emergencies. It is estimated that more than half of the power generator failures that occur in emergencies can be directly attributed to fuel degradation.
There are many fuel stabilizers to choose from, including Sta-bil Storage Fuel Stabilizer, which keeps fuel fresh for up to 24 months and eliminates the need to drain old gas. Another option is PRI-G, which costs approximately 11 cents per gallon to treat gasoline and can treat fuel for years without issue.
To use a fuel stabilizer, simply add it to your fuel according to the manufacturer's instructions. Then, run the engine outdoors for about 10 minutes to ensure the treated gasoline has replaced the untreated gasoline throughout the fuel system.
It is also important to note that you should always store your generator with a completely full tank of stabilized, ethanol-free gasoline. This will help prevent moisture from condensing inside the tank and causing issues.
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Draining the tank through the carb bowl
To drain the tank through the carb bowl, first, remove the plastic cover over the fuel lines. This will give you access to the fuel lines. You will need a wrench or socket wrenches to do this. Once the cover is removed, push the fuel valve through the cover and move the cover out of the way. Make sure that the fuel valve is set to off. This will ensure that the fuel valve is closed when you remove one side of the line.
Next, pinch and remove the aluminium clip from the side of the fuel line that does not connect to the gas tank. Have a rag or some other absorbent material close by to catch any fuel that is left in the tube. Then, remove the tube from the fuel valve. Place a small collection container under the carburettor. There will be a screw at the base of the carburettor that you can use to open the drain. Turn the screw to the left to open the drain hole. Only a small amount of fuel will come out. Once the fuel has stopped coming out, turn the screw to the right to close the drain.
If you are not planning to use your generator for a long time, it is important to drain the tank to prevent the fuel from deteriorating and causing problems. You can also use a fuel stabilizer to prevent this.
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Disconnecting the fuel line from the fuel injector
First, locate the plastic cover that is positioned over the fuel lines. This cover protects the fuel lines and needs to be removed to access them. Using a wrench or socket wrench, carefully loosen and remove the bolts holding the cover in place. Put the bolts somewhere safe so they don't get lost.
With the cover removed, you will now be able to see the fuel lines clearly. Identify the fuel line that connects to the fuel injector. This line will run from the fuel valve to the injector. Before you disconnect this line, make sure that the fuel valve is set to the "off" position. This is important to prevent any fuel leakage when you detach the line.
Now, you can proceed to disconnect the fuel line from the fuel injector. Gently pinch and remove the aluminium clip from the side of the fuel line that is attached to the injector. Have a rag or absorbent material nearby to catch any residual fuel that may be left in the tube. Carefully pull the tube away from the fuel injector, being mindful of any fuel that might drip out.
At this point, the fuel line should be successfully disconnected from the fuel injector. You can now place the disconnected end of the fuel line into a suitable container to catch any remaining fuel. This step is important to prevent spillage and ensure that the fuel is safely contained.
By following these steps, you will have safely and effectively disconnected the fuel line from the fuel injector of your Honda generator. Remember to exercise caution when working with fuel, and always refer to the generator's manual for additional guidance if needed.
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Using non-ethanol gas to prevent deterioration of the fuel lines
Using non-ethanol gas is a good way to prevent the deterioration of the fuel lines in your Honda generator. Non-ethanol gas has better energy density and improved fuel efficiency. It also helps prevent water accumulation, which can cause phase separation, where ethanol and water separate from the gasoline. This can lead to clogging in the fuel system and injectors.
Over time, ethanol can cause corrosion and deterioration in engine components, fuel lines, and rubber seals. It can also lead to clogging in the fuel system and injectors. If you are using a Honda generator with a fuel pump, it is important to note that the pump is likely submerged and relies on the fuel for cooling. Therefore, it is recommended to use non-ethanol gas or stabilized gas to prevent issues with the fuel pump.
One way to ensure the longevity of your Honda generator is to use non-ethanol gas for storage. This type of gas can sit for a long time as long as the tank is full. However, it is important to drain the carbs as they can cause issues. Additionally, running the generator regularly, at least every other month, and keeping the tank dry will help maintain the fuel system.
If you are unable to find non-ethanol gas, you can also use fuel stabilizers to prevent gasoline from causing problems. Fuel stabilizers can help prevent the gasoline from deteriorating and causing issues with the fuel lines. However, some users have reported that their generators were tough to start after using fuel stabilizers.
In summary, using non-ethanol gas in your Honda generator can help prevent the deterioration of the fuel lines and improve the overall longevity of your generator. It is important to consider the availability and cost of non-ethanol gas in your area and decide if it is the right choice for your specific needs.
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Drilling a hole in the drain petcock to safety-wire it closed
To do this, you will need to carefully drill a hole in the valve's handle. The hole should be large enough to fit a safety wire through. This wire can then be used to secure the valve in the closed position. It is important to note that this modification is not recommended by the generator's manufacturer and should be done at your own risk.
When drilling the hole, it is crucial to take your time and use the appropriate drill bit size to avoid damaging the petcock or the surrounding components. It is also important to clean and maintain the petcock regularly to prevent sediment buildup, which can hinder its function.
Additionally, it is worth mentioning that some people choose to use alternative methods to secure the drain petcock. For example, one user on the British Car Forum suggested using a welding rod to clear any blockages in the petcock by turning it back and forth to dig out the crud. This method avoids the need to drill a hole and potentially risk damaging the fine threads of the petcock.
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Frequently asked questions
It is recommended to drain the fuel tank of your Honda generator every time you store it if it uses pure gasoline or gasoline blended with ethanol. If you don't intend to use the generator for over two months, it's important to drain the tank or use a gas stabilizer.
Here are the steps to drain the fuel from your Honda generator:
- Remove the plastic cover over the fuel lines using a wrench or socket wrench.
- Ensure the fuel valve is set to off.
- Pinch and remove the aluminium clip from the side of the fuel line that does not connect to the gas tank.
- Place a rag to collect any residual fuel and remove the tube from the fuel valve.
- Put the fuel valve tube into a collection container large enough to hold the fuel.
- Turn the fuel valve on and let the fuel drain into the container.
- Once done, reconnect the fuel line and replace the cover.
It is recommended to use non-ethanol or low-ethanol fuel for your Honda generator to prevent issues during storage. Non-alcohol gasoline is also suggested to avoid problems.
After draining the fuel tank, you can store your Honda generator in a dry place, preferably out of the rain. It is also recommended to fog the steel tank with marine fog oil to prevent rusting.










































