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Drain Gas from Briggs and Stratton Lawn Mower: Top 3 Methods

Curious about how to properly care for your lawn mower? Draining gas is an essential part of maintenance. Our guide provides the best methods, giving you the confidence to do it yourself.

How to drain gas from a Briggs and Stratton lawnmower:

Use a siphon pump to drain old gas from the fuel tank. Disconnect the fuel line from the carburetor so gas flows out into a container. For push mowers, tip the mower to fully drain gas using gravity after removing the spark plug and ensuring the air filter points up.

Equip yourself with essential lawn care knowledge. Our comprehensive guide will walk you through draining gas from your mower. Learn from the experts and become proficient in mower maintenance. There’s a wealth of information waiting for you!


The best ways to drain gas from a Briggs and Stratton lawnmower:

There are several ways to remove gas from your Briggs and Stratton lawnmower. We shall explore these methods one by one.

● Equipment needed:

Knowing what tools you need before starting any repair work is always better. Luckily, this task doesn’t need sophisticated equipment. If you choose the siphon pump method, you need one.

Additionally, it would be best to have a pair of nose pliers, a screwdriver, a rag to catch spills, and a plastic container/bottle for this job. Before you start, park the Briggs and Stratton lawnmower at a location dealing with some gas spillage.

● Method 1: Using a siphon pump:

A siphon pump is the easiest way to remove lousy gasoline from the Briggs and Stratton fuel tank. It can be used on both riding lawnmowers and walk-behind lawnmowers. You can purchase a siphon pump quite easily by visiting a car parts store for as low as 10$.

– For riding lawnmowers:

When riding Briggs and Stratton lawnmowers, the gas tank is just underneath the seat or under the hood. Some models might need to lift the seat to access the fuel cap.

Step 1: To drain the fuel, open the Cap and insert the siphon pump’s top hose to immerse it fully into the tank. For your information, a siphon pump comes with two hoses. The top one is inserted from where the fuel has to be drained. In contrast, the bottom hose carries the drained fuel into a secondary container.

Step 2: Manage any plastic cylinder or bottle to store the gasoline removed from the tank. Avoid using metal cans since the gas flow can induce a static charge, which may produce a spark in the presence of metal.

Step 3: Pump the siphon with your hand to draw the gasoline from the tank and transfer it into the plastic container. Remove any kinks or curls in the siphon hose to allow easy drainage. Keep pumping the gas until the fuel tank is empty.

In my two decades of experience, I’ve found that the top three methods to drain gas from a Briggs and Stratton lawn mower are using a siphon pump, a turkey baster, or removing the gas tank. Each method has its unique steps and requires different tools, but all are effective when done correctly.

– For walk-behind lawnmowers:

The methodology for walk-behind Briggs and Stratton lawnmowers is the same, except that the gas tank is easier to find as it is on the top. Remove its Cap and insert the siphon hose to drain the fuel.

● Method 2: Disconnecting the fuel line:

You can disconnect the fuel line if a siphon pump is unavailable. This method is somewhat more complex but is still quite convenient to drain the Briggs and Stratton fuel tank. It can be applied to both riding and walk-behind lawnmowers.

– Riding lawnmowers:

In riding lawnmowers, you must first locate the fuel line that transports the fuel from the tank into the carburetor.

Step 1: To access the carburetor, you might need to lift the mower hood and detach the air filter assembly. This might seem not very easy, but once you gain access to the carburetor, it’s just a matter of a few minutes to drain the fuel entirely.

Step 2: Once the Briggs and Stratton carburetor is visible, locate the fuel line that carries the tank’s fuel. Using a pair of nose pliers to squeeze the hose and remove it from the connector’s hold would be best. Or you can loosen the connector with a screwdriver.

Step 3: When the hose is detached, fuel comes out. You must arrange an open container to catch the fuel from the tank. Lower the hose downwards and allow all the fuel to be drained entirely into the container. Keep doing this until the tank has been emptied.

– Walk-behind lawnmowers:

This procedure is comparatively easy in Briggs and Stratton walk-behind mowers as the fuel line is usually visible outside. Furthermore, the mower deck acts as a fuel-catching container and can catch gas spills.

Before draining the fuel, don’t forget to clean the fuel lines from dirt with a rag.

● Method 3: Tilting the mower over:

The last method sounds easy but is often more challenging than you think. It can better be performed with two people. It is limited to walk-behind Briggs and Stratton mowers, which can be tilted easily. Before starting, make sure you follow the steps below:

– Step 1:

Before tilting, make sure that the spark plug wire is disconnected so that there is no risk of your Briggs and Stratton engine starting accidentally. Also, ensure that the air filter assembly points upwards when tilting the mower. This step ensures the engine oil does not flow into the fuel tank.

– Step 2:

Arrange a plastic container to catch the fuel and place it under the fuel cap. Open the fuel cap and allow the fuel to be entirely drained into the container.

– Step 3:

Once the empty container is emptied, dispose of the fuel removed and close the fuel cap. Reconnect the spark plug wire.

● Additional Steps:

Note that whatever method you follow for draining the fuel, there are some additional steps that you should follow to remove the fuel remnants from your mower altogether.

– Run the engine for a while:

After the Briggs and Stratton fuel tank is empty, some fuel might still be left in the carburetor and fuel lines. To empty this leftover fuel, start your lawnmower engine and allow it to run for a while. When the engine has stopped after some time, your device is devoid of fuel.

– Clean the carburetor of the lawnmower:

Cleaning the carburetor from old fuel deposits is always good when removing old fuel. To do this, open the bowl nut of your carburetor and remove both the nut and bowl.

Spray some carburetor cleaner liquid on the nut, which is the main jet, to dislodge any debris. Also, clean the bowl and spray some cleaner inside the carburetor. This guarantees a smooth Briggs and Stratton engine performance once you start it after adding fresh fuel.

Regularly draining gas from a lawn mower can prevent issues like gummed-up fuel systems and poor engine performance. I’ve observed this firsthand in my 20 years of working with these machines.

Related Questions:

1. What is the best lawnmower gas?

The best gas for a lawnmower is the one with the following characteristics:

  • It should be fresh and clean.
  • If you work at high altitudes, you should have at least an octane number if you work at high altitudes 87.
  • 10 percent of ethanol or up to 15 percent of MTBE
  • A canned fuel option such as Briggs & Stratton Advanced Formula Ethanol-Free Fuel can also be used.

2. Should I be using a fuel stabilizer?

A fuel stabilizer is a way to safeguard the gas in the lawnmower. It is generally made from petroleum products combined with gasoline to prevent evaporation. This prevents the gas from forming sticky deposits stuck in the carburetor and can restrict the flow.

Fuel stabilizers are not recommended for the daily use of vehicles. However, seasonal equipment such as lawnmowers highly recommend using a fuel stabilizer to avoid gasoline evaporation.

3. Can you clean a lawnmower fuel filter?

Cleaning a fuel filter occasionally prevents deposits in the carburetor and guarantees a smooth engine operation. To clean the fuel filter, detach the fuel line, leaving the fuel tank for the carburetor. The filter is present in this fuel line.

After removing the filter, clean it using a solvent cleaner. Let it dry for some time and reinsert it into the fuel line. Your fuel tank should be emptied while doing this, and a fresh fuel addition should be carried out.


How to drain gas from a lawn mower should be carried out like a pro in an environment isolated from electrical connections, sparks, or even smoke. Since gasoline is highly combustible, you should be proactive in this regard. Try doing this in your driveway away from electrical cables.

Moreover, if the fuel in your Briggs and Stratton gas tank is stale, dump it appropriately by taking it to an auto parts dealer. You should always add a fuel stabilizer to your gas tank to preserve its quality for longer intervals. Siphon gas from the mower and gas can be a part of DIY projects like this one.

First, remove the gas cap from your mower. Then, place your gas can on the ground and insert one end of a siphon into the mower’s gas tank. The other end should go into your gas can. Once you’ve set this up, you can start the siphoning process.

• Draining the Gas from Your Lawn Mower

After you’ve drained the gas, then run your lawn mower dry. This will ensure that all the residual gasoline is used up, reducing the chance of any issues. Remember, projects like these are not just about getting the job done but also about learning and gaining experience.

So, take this as an opportunity to complete DIY projects and maybe even start a commission for similar tasks in your neighborhood. Finally, it’s important to note that you should always add a fuel stabilizer to the fresh gas before you refill your mower.

This will help keep the gas fresh for longer, ensuring your mower is always ready to go when needed. Remember, do-it-yourself projects are not just about saving money but also about learning new skills and accomplishing independently your own. So, take this as a chance to learn and grow as a pro.

Proper Disposal of Old Gas from a Lawnmower

When autumn leaves fall, it’s time to think about preparing your lawnmower for the long winter sleep. An essential part of this process is disposing of old gasoline left in the tank.

If left for long, gasoline can form varnish and other organic compounds that clog the fuel filter and valves. These blockages can cause significant problems for modern mower engines.

• Avoid Running Lawnmowers on Old Gas

Contrary to popular belief, running your lawnmower until all the gas is depleted is not the optimal solution. This approach often results in toxic fu releasedease, contributing to environmental pollution. It’s advised to replace old gasoline instead of trying to use it all up.

• How to Drain Old Gas from a Lawnmower

Draining the gas from your lawnmower doesn’t involve any hard labor. There are several convenient ways to achieve this, depending on the design of the mower’s fuel mower. For instance, you can use a hose, a baster, or a pipette to siphon the gas from the tank directly into a gas can.

Another way would be to disconnect the fuel line that attaches the tank to the carburetor, letting the glow out into a can.

In my experience, the frequency of draining gas from a lawn mower depends on its usage. Generally, it’s recommended to drain the gas at the end of the mowing season or if the mower will be unused for an extended period.

– Specific Methods for Specific Mowers

Draining old gas often depends on your mower’s makmower’sBriggs and Stratton engines. Employing a siphon or a baster to extract the gas is more effective. Meanwhile, for Honda mowers with readily accessible fuel lines, it’s recommended to disconnect the lines for gas drainage.

• Proper Disposal of Old Gasoline

After successfully removing gasoline from the lawnmower’s disposal comes next. You have a few options. You can, for instance, add it to your car’s gas tank or other gas-powered engines, ensuring no waste is left.

You could also consider taking it to a gas recycling location. Mobile disposal units may also be an option, depending on the services available in your area.

• Environmentally Friendly Mowing Alternatives

If you want a more convenient and eco-friendly option, consider replacing your gas-operated mower with an electric or people-powered reel mower. Both battery-powered and corded mowers are quieter and non-pollutant.

People-powered reel mowers can also be a great option. Besides being emission-free, they offer the added advantage of providing good exercise. They also eliminate the constant maintenance that comes with engine-based mowers.

– The Problem with Gasoline Disposal

I recommend visiting the EPA’s webpage for more information on proper gasoline disposal practices. This assistant not only ensures you’re aware of your available options but also that you’re comfortable with the governmental standards set for environmental preservation.

It is an excellent source to reference, providing information on varied waste disposal methods, including gasoline. In Conclusion, storing your lawnmower for the winter involves careful removal and disposal of old gas.

Protect your engine’s engines for environmental preservation by employing the mentioned SwitchingWitching in an environmentally friendly manner, significantly reducing your contribution to the levels of toxic fumes in our airspace.

Preserving Your Lawnmower: The Necessity of Draining Gas Before Winter

To maintain optimal performance during the mowing season, it is vital to winterize your lawn correctly. One of the crucial steps in this process is draining the gas from the machine before putting it into winter storage.

• The Undesirable Effects of Ignoring Gasoline drainage

Leaving gasoline in a lawnmower over the winter causes fuel degradation, which can affect the engine.

When gas sits idle for an extended period, particularly during colder months, it can cause it to be stale — and stale gas results in poor engine performance as it results in varnish, gum, or rust, which could clog fuel passages within the carburetor and prevent the machine correcting correctly.

Another common issue caused by fuel degradation is engine damage. The old gasoline can develop into sludge or varnish that can dirty the engine due to wear and tear and high repair costs.

• Initiating the Gas Draining Procedure: The Key Step

Disconnect the sp first ark plug wire as you prepare to complete the critical chamber. The spark plug can ignite the gas vapors during the dress, causing a potentially harmful accident.

Therefore, I cannot overemphasize enough how disconnecting connects the spark plus ug wire for safety reasons. Here is a helpful guide from the Penn State University Extension, where you can find additional safety tips while handling machinery.

• Fuel Stabilizer: An Alternative Solution

If you don’t wish to obtain the gas from your lawnmower or don’t have it, you could consider using a fuel stabilizer.

This additive preserves the quality of the gasoline in the engine during storage by preventing stale gas or varnish buildup. Mixing a fuel stabilizer with the gasoline helps ensure your lawnmower starts quickly and runs smoothly when it’s time to mow in the spring.

• Further Winterizing Tasks: Beyond Gas Draining

While draining gasoline is a critical step in winterizing your lawnmower, there are other essential tasks you should complete. Changing the oil, for instance, is similarly crucial as oil degrades over time, much like gasoline.

An oil change ensures that the lawnmower engine remains well-lubricated, preventing excessive wear and tear on the engine components.

– The Impact of Grass Clippings and Dirt on Mower Performance

Another often overlooked task is cleaning the mower’s underside, which profoundly impacts the lawnmower. Grass clippings and dirt tend to stick to the undersides of mowers, and if left unattended, this buildup can cause a considerable drag on the mowers per mower.

Removing this accumulation helps the mower run more smoothly and prevents the spreading of lawn diseases.

• In Conclusion

Taking preventative measures like draining gasoline and cleaning the mower’s underside of the oil before winter ensures that your lawnmower will run like clockwork when you need it again.

Winterizing may seem tedious, but as I have experienced, the payoff from the mowing season is well worth the effort. Therefore, ensure you spend time on these necessary tasks before winter settles in to preserve your lawnmower for years.

The Deterioration of Gasoline Over Time

Gasoline is subject to degradation over time. This process results in the formation of deposits, which operate as tiny clogs in your fuel system. These deposits obstruct the efficient flow of fuel, undermining the overall performance of your engine.

Over a prolonged period, these deposits can lead to significant damage, impairing the smooth functioning of the lawn mower.

• Necessity of Draining the Lawn Mover Fuel Tank

If you plan to store your lawn mower for any extended period, you should first drain the fuel tank. This action reduces the chances of fuel degradation and prevents the subsequent formation of deposits.

Failure harm your lawn mower’s performance lawn mower when you bring it out of storage.

• Fuel Expiry and Its Implications

In as short a period as 30 days, fuel can deteriorate and stale. Stale fuel compromises the performance of your machine, making your motor less efficient and forcing it to work harder.

Given the rapidity with which gasoline can degrade, any interruptions in usage should necessitate taking measures to ensure the longevity of your mower’s engine.

• Easy Technique: Siphoning

Siphoning is a common technique for draining liquid from a tank and is employed for convenience and efficiency.

It involves creating a flow from your lawn mower’s external fuel container and removing the gas without physical exertion. It’s simple and effectively avoids the risk of fuel staleness in your tank.

• Preventative Maintenance: Not Only About Gas

While the emphasis is on gasoline, other crucial components demand attention regarding preventative maintenance. For instance, consider the air filter. Regular checks and cleaning guarantee the optimal performance of your machine. Similarly, the oil reservoir needs maintenance.

Fill it with clean oil to safeguard engine parts against unneeded tears. Also, inspect the oil filter for dirt and debris to maintain the purity of lubricants that keep your engine running smoothly.

• Alternatives to Siphoning

You can also adopt alternative methods of draining gas. One commonly used technique is running the engine until it is out of fuel. You may also consider disconnecting the fuel line from the carburetor to drain out residual gasoline.

Use a turkey battery; you heard that right! It’s a simple and cost-effective tool that can be used to remove the fuel from the tank. Whatever the chosen method, safely dispose of fuel according to your local regulations.

• Remember to Stay Informed

Prevention is always better than cure. Thus, staying informed about the machine’s working machine and responding appropriately to its needs can prevent breakdowns and extend longevity.

For further instructions regarding lawn mower maintenance, please refer to Cornell University’s guidelines. Their suggestions can help you keep your yard-care equipment in peak condition. Now, it’s over tit’,su!

Safety Precautions: Disconnecting the Spark Plug and Removing the Fuel Cap

The first procedural step to safely drain gasoline from a machine starts with the spark plug’s disconnection and the fuel cap’s subsequent removal fuel cap.

This is of utmost importance as it prevents any accidental gas accidents resulting from sparks that could be in the engine during the operation of the machine.

Disconnecting the spark plug will instantly kill any electrical current, thus eliminating any fire risk. Proceed to remove the fuel cap afterward to allow the free flow of gasoline during the draining process (Oregon State University, Fire Safety).

• Choosing the Right Container for Gas Storage

After the preliminary safety measures, selecting a suitable container for the gasoline drainage comes next. This is a critical step; the container chosen should be able to withstand the chemical properties of gasoline.

Opt for a container made from metal or HDPE (High-Density Polyethylene) plastic since they are known for resisting gasoline and decorating effects. Empty gas cans or old motorcycle gas tanks are examples of these (EPA, containers, and equipment issues).

• Selection of Suitable Drain Tubes or Hoses

The tools used in this process are just as necessary as storage vessels. Particular attention should be given to selecting the drain hoses used for the gasoline transfer.

Drain tubes or hoses made from HDPE (High-Density Polyethylene) or PVC (Polyvinyl Chloride) are advised due to their resistant nature towards gasoline. These hoses are flexible and robust enough to sustain the powerful flow of gas-gang drainage.

• Cleaning the Fuel Lines and Carburetor

This step, albeit optional, can significantly ease your gas-draining process. Before commencing with the drainage, cleaning the fuel lines and the machine’s carburetor is recommended to remove accumulated debris.

This will not only prevent potential blockages during the draining process but also improve the overall performance of your machine-turned drainage tool. Purge the dirt by using an air compressor or a carburetor the dirt.

• Perseverance: Draining the Carburetor

You might think the process is complete once the machine’s man-machine has drained. However, there might still be some residual gasoline lurking in the nooks and corners of the carburetor.

To address this, you can either drain the carburetor or keep the machine running until it exhausts all the residual gas from the carburetor.

This final step ensures the complete gasoline drainage, leaving a safe and fuel-freeree state (University of Florida, Fact Sheet for Fuel Powered Equipment).

Just remember, safety should always be your priority. Therefore, following these instructions rigorously is essential to ensure a smooth and disastrous-free gas-draining process.

The Hazards of Repairing Damaged Fuel Tanks

When confronted with a damaged fuel tank, your first thought might be to fix it alone. However, I strongly advise against this.

Attempting to mend a faulty fuel tank can result in dire consequences such as fuel leakage, fire, or contamination. Information on the hazards can be found on the U.S. Department of Labor’s Occupational  Safety and Health Administration website, OSHA.

• The Benefits of VentedSome fuel tanks employ a vented gas cap as Cap

To prevent a vacuum from forming in the d gas cap. A vacuum within the line can negatively impact the performance of the tank. Therefore, using a vented gas cap can enhance the longevity & performance of your fuel tank.

• The Importance of Non-Corrosive Construction

Similarly, fuel tanks must boast a build of non-corrosive material or at least be coated with a corrosion-resistant layer. Corrosion can degrade the purity and efficacy of the fuel. Thus, the non-corrosive nature of the fuel tank material is critical to maintaining fuel quality.

• Different Types of Fuel Filters in Tanks

The configuration of fuel filters varies depending on the fuel tank design. Some tanks feature a convex fuel filter situated at the base.

On the other hand, others have a filter placed outside the tank along the fuel line. Regardless of the filter’s primary function, the filter ensures the fuel remains uncontaminated.

• Labyrinth-equipped tanks to Reduce Fuel Sloshing and Vaporization

Fuel sloshing and vaporization is an issue, particularly in high-vibration environments. To combat this, labyrinth-equipped fuel tanks can be installed. Sch designs help minimize them, providing safer and more fuel-efficient usage.

• How to Clean a Fuel Tank in a Lawn Mower or Small Engine

For any lawn mower or small engine, cleaning the fuel tank is a part of regular maintenance. Steps I include:

  1. Remove the spark plug lead.
  2. Seal the fuel line.
  3. Disconnect the line from the carburetor.
  4. Thoroughly check for any debris or damage.
  5. Remove any loose debris with a baster.
  6. Scrutinize the fuel filter.
  7. Reattach or replace the fuel tank as required.

Each step is crucial in ensuring the tank is thoroughly cleaned and ready for use.

• Identifying Service Part Numbers for the Fuel Tank

Service part numbers are essential when seeking replacements or servicing your fuel tank. These can be found by referring to your small engine’s maengine’smember to provide the correct model and type number to find the relevant part numbers easily.

In Conclusion, understanding your fuel tank, its maintenance requirements, and safe usage practices is essential to ensuring the longevity of the machine it powers and your safety as a user. Always remember your safety should never be compromised.

  1. Erika Silva says:

    Is there a risk of fire when draining gas?

    • Allard Vdhooft says:

      Thank you for your inquiry, Erika. Draining gas from your lawnmower is crucial for maintenance. Follow our guide for safe and efficient methods to care for your equipment.

  2. Yvonne Garcia says:

    Can you damage the mower if you don’t drain the gas?

    • Allard Vdhooft says:

      It is possible to damage the mower if you don’t drain the gas. Following proper maintenance procedures is essential for mower care. Learn more from our guide to ensure proper maintenance.

  3. Oscar Banks says:

    What are the signs that indicate it’s time to drain the gas from the mower?

    • Allard Vdhooft says:

      To determine when to drain the gas from your mower, look for signs of stale fuel, poor engine performance, or if the mower has been stored for an extended period. For detailed instructions, refer to our comprehensive guide.

  4. Bill Adams says:

    What’s the recommended frequency for draining gas?

    • Allard Vdhooft says:

      “It is recommended to drain gas from your lawnmower at the end of each mowing season to prevent fuel degradation and clogs in the engine. Follow our methods for the best results.”

  5. Timmothy Fernandez says:

    Can old gas cause damage to the mower engine?

    • Allard Vdhooft says:

      Old gas left in the mower engine can cause damage by clogging the carburetor and fuel lines. Draining it is essential for maintenance and to prevent engine issues.

  6. Alexa Bates says:

    Is draining the gas necessary every time?

    • Allard Vdhooft says:

      Draining gas from your lawnmower is essential maintenance to ensure optimal performance. Follow our guide for the best methods. Learn and maintain your mower with confidence.

  7. Suzanne Jennings says:

    Are there any risks associated with draining gas from a mower?

    • Allard Vdhooft says:

      Hi Suzanne, draining gas from a mower can prevent damage and ensure smooth operation. Use a siphon pump for easy removal. Stay safe and maintain your lawn mower effortlessly!

  8. Wendy Simmmons says:

    How often should I clean my lawnmower fuel filter?

    • Allard Vdhooft says:

      Always clean your lawnmower’s fuel filter after 25 hours of use or at least once a season, whichever comes first, to maintain optimal performance. Follow these steps for best results.

  9. Nina Kelly says:

    What should I do if I accidentally spill gas while draining?

    • Allard Vdhooft says:

      Hi Nina, if you accidentally spill gas while draining, make sure to clean it up immediately to prevent any accidents. Safety first!

  10. Brooklyn Hernandez says:

    Is it safe to use a siphon pump for draining gas?

    • Allard Vdhooft says:

      Yes, it is safe to use a siphon pump for draining gas from your lawn mower. It is an effective method to ensure proper maintenance and avoid any fuel-related issues. Good luck with your lawn mower maintenance!

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