How to Drain Old Gas from a Generator

1. Open the gas tank

The first step would be to move your generator to a well-ventilated area, preferably outside your home and on a flat surface. Once the generator is in place, open the gas tank cap to allow sufficient airflow.

However, it is critical that you read your user manual beforehand for precise instructions and guidance on how to locate different parts of your generator. This will make your job a lot easier.

2. Find the valve switch

Locate the fuel valve switch for your specific generator model and turn it to “ON.” Make sure you have easy access to the fuel lines.

3. Remove the plastic cover that was placed over the fuel lines

Some models include a plastic cover that is typically secured with a couple of large bolts. By removing the cover, you will have easy access to the fuel lines. Remove the plastic cover with the socket or a standard wrench.

To remove the valve switch completely, you may need to push it through the cover. Once the cover is removed, turn off the fuel valve to prevent fuel from entering where it is not supposed to.

4. Unclip the aluminum clip

The following step is to pinch and remove the aluminum clip that is not attached to the gas tank. Keep a paper towel or damp cloth nearby in case some fuel leaks from the tube you’re attempting to remove.

This is a critical step. If you disconnect the tube that runs to the gas tank, fuel will spill everywhere, which cannot be good. If the seal appears to be too tightly secured, use pliers to pinch it out.

5. Set up a collection container

It’s time to get the fuel. Take a collection tube large enough to hold all of the gas inside your fuel tank. A generator fuel tank usually holds 5-10 gallons of gasoline. If you want to store your gasoline safely, use a gas can.

6. Open the fuel valve

Once the collection container (gas can) is in place, reopen the fuel valve and allow all of the gas to drain into the container. If you believe there is still some gas in the tank, you can tilt your generator slightly.

Once all of the fuel has been drained into the container, reconnect the lid to the fuel tank and reattach the cover securely.

7. Take fuel from the carburetor

Don’t forget about the carburetor, as there will be a small amount of fuel left in it. Locate the screw on the carburetor’s base and empty all of the fuel into another gas can.

If you have any trouble locating your carburetor’s drain bolt, consult the user manual for specific instructions. Turn the bolt/screw on the left with the screwdriver to loosen it.

8. Replace the screws

Once all of the gas has been drained from the carburetor, wipe the area around the drain hole with a paper towel or damp cloth to ensure there is no fuel spillage.

There should be very little fuel left in the carburetor. Once all of the gasoline has been removed, reattach the screw securely in its place, and you’re finished.

Tips for safely draining gasoline from a generator

Before making any changes, always read and comprehend your user manual.
Never drain your generator while it is still running.
Keep flammable items such as cigarettes, sparks, and flames away from your generator.
Keep your pets and children away from the generator.
Allow the engine to cool completely before handling the machine.
In wet weather, avoid tampering with the generator.
If you won’t be using the generator for more than a couple of weeks, drain the fuel.

Conclusion

Every machine requires routine maintenance, especially those that can become potentially dangerous or malfunction easily. Your generator is no exception. Generators use gasoline to generate electricity, which can be hazardous if not properly maintained. Every time you use your generator, it requires new, stabilized gas. Leaving gas inside the generator can cause a variety of issues, including damage to the inner workings due to dirt or gum buildup. That is why, if you are not going to use your generator for an extended period of time, it is critical to properly drain all of the gas from it. This could save you money on future repairs.

FAQs

Can I put gas in a generator that is already running?

No, you can not. Never put gas in or attempt to dry the fuel tank while the generator or engine is running or hot. Spilled gas can ignite if it comes into contact with the hot engine, which is dangerous for you and those nearby.

Before making any adjustments, turn off the engine and allow it to cool completely.

Is it necessary to use ethanol-free gas in my generator?

Yes, ideally. On your generator, you must use clean, fresh, unleaded gasoline. The fuel must have an octane rating of 87/87 AKI and can contain up to 10% ethanol. To avoid any unpleasant consequences, never use E85 or a gas/oil mix. We recommend that you use premium non-ethanol fuel.

How do I reintroduce gas into my carburetor?

You are not required to do anything. Simply reassemble everything, refuel the tank, and start the engine. When the engine starts, the carburetor is automatically filled with gasoline.

How to Drain Old Gas from a Generator

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