Perhaps you’re winterizing your lawn mower and need to empty the tank to prevent fuel lines from freezing. Or maybe you’re performing maintenance on the engine and need to remove the gas to access certain parts. With a siphon, you can accomplish this process. If you do not have a siphon, what should you do?

In any case, it’s helpful to know how to drain gas from lawn mower without siphon. After all, siphoning gas can be messy and dangerous, and it’s not always necessary.

The good news is that you can follow a few steps to get the job done, and we’ll be exploring them further below. So whether you’re looking for the quickest way to empty a tank or the safest method for handling gasoline, we’ve got you covered.

How to Drain Gas from Lawn Mower without Siphon: A Step-By-Step Process

Drain Gas from Lawn Mower without Siphon

Most people don’t know how to remove fuel from their lawn mowers properly. As a result, they either end up with a half-empty tank of gas or spill gas all over the place.

If you want to avoid these problems, it’s important to learn proper procedures. The following step-by-step guide will teach you what you need to do in order to drain the gas from your lawnmower without using a siphon:

1. Tools and Materials Needed

Ensure that you have the right tools and materials on hand before you start draining your gas tank on your lawn mower. This will make the job much easier and help to prevent accidents.

  • A screwdriver
  • A wrench
  • A pair of gloves
  • Safety goggles (optional)
  • A length of tubing
  • A container for the gas

Once you have gathered all of the necessary tools and materials, you are ready to begin.

2. Prepare Your Mower:

Before you can drain the gas tank of your lawn mower, you need to take a few preparatory steps. First, confirm the mower is turned off and that it will not start automatically while you are working on it. If your mower has a fuel shut-off valve, now is the time to use it.

Once you’ve turned off the mower, prop it up on a level surface so that you can easily access the gas tank. Finally, put on a pair of gloves to protect your hands from fuel spills. If you have them, safety goggles would also be a good idea.

3. Disconnect the Spark Plug

Before you store your lawn mower for the winter, be sure to empty the fuel tank to prevent the gas from deteriorating and damaging the engine. One way to do this is to unplug the spark plug and then run the engine until it runs out of fuel.

This will help remove any fuel that might be left in the carburetor and prevent it from accumulating over time. Aside from that, it’s a good idea to clean the spark plug with a wire brush to remove any build-up of carbon deposits.

4. Remove the Gas Tank Cap

Many people think that removing the fuel tank cap from a mower is a difficult task. Even so, anyone can do it with a few simple tools and directions. The most important thing to remember is always to take precautions when working with gasoline.

First, locate the tank cover beneath your mower. It is usually located near the back of the machine, on the side, or underneath the fuel tank.

Once you have found the cap, use a screwdriver to remove the cap. Be careful not to over-tighten the screwdriver, as this may damage the cap. Next, use a wrench to loosen the nut that secures the tank cap. Finally, detach the cap from the gas tank by hand and carefully pour the gasoline into a container.

5. Drain the Gas Tank

To begin with, find a suitable container for capturing the gas. A milk jug or empty soda bottle will work nicely. Once you have your container, attach one end of a length of tubing to the gas tank and the other end to the container. Make sure that the tubing is airtight so that no gas can escape. The draining task is now ready for you.

To push the liquid fuel out of the tank, you must build up a propulsive force that will push the fuel forward. On the open end of the shorter tube, blow hard to push air into the tank.

The process can be expedited even further if you make use of an air compressor or pump to speed up the process. Use it to blow air in the tank, but don’t forget to cover the tank opening with some cloth.

It is important that you stay well away from the tank when you blow into it to stay away from inhaling any fuel fumes. Upon blowing some air into the tank, you will notice that fuel will begin spewing out of it from the other tube after some time has passed.

After the flow becomes continuous, you can stop blowing when the flow becomes continuous. The rest is taken care of by gravity and pressure differences.

These were the steps you needed to take in order to siphon fuel from lawn mowers. Remember to take all necessary safety measures when handling gasoline. Also, be sure to dispose of the fuel properly once you have drained it from the tank.

Why Should You Drain the Gas from the Lawnmower?

Why Should You Drain the Gas from the Lawnmower

You might be wondering why you need to go through all the bother of taking off the gas tank from your lawn mower. While it might seem like a lot of work, there are some very good reasons for doing it. Here are a few of the most prominent ones:

To Avoid Rust And Corrosion: One of the main reasons for doing this is to prevent rust and corrosion. Gasoline contains chemicals that can break down metal, which can lead to serious problems over time if stored for too long.

Preventing Engine Damage: Another reason for draining the gas is to avoid engine problems. Over time, the gasoline will break down and form deposits on the engine parts. These deposits can cause serious problems and even lead to engine failure.

Extending The Life Of Your Lawn Mower: If your lawn mower gets too much gas in it, emptying it can help to extend its life. This is because the gasoline will eventually break down and damage the engine parts. Keeping your mower in good shape for years to come is possible if you drain it before it becomes clogged.

To Save Money: Believe it or not, draining your lawn mower’s gas tank can save you money in the long run. This is because you won’t have to replace the engine parts as often, and you’ll also be able to use cheaper gas.

For Safety: Last but not least, it’s relevant to empty your lawnmower for safety reasons. Gasoline is a very flammable substance, and it can be very dangerous if it’s left in the tank. If there’s a fire, the gas could explode and cause serious injuries.

These are just a few of the many reasons why you should be making sure to check the fuel levels in your lawnmowers so often. If you take the time to do it, it will be possible for you to give your mower a longer lifespan.


Let’s go through some frequently asked questions related to this topic. It’ll help clear out any doubts you might have.

1. How Long Can You Keep Gas in Your Lawn Mower?

If it’s properly treated, gasoline can last up to a year. Nevertheless, if it’s not treated, it can degrade in as little as 30 days. So if you’re not sure how old your gas is, it’s better to play it safe and get a new can. That way, you can be sure your lawn mower will start up on the first try and that your gas won’t do any damage.

2. What Should I Do With The Gas After I’ve Drained It From My Lawnmower?

One option is to take the gas to a local recycling center. Many centers will accept gas containers and dispose of them safely. You can also pour the gas into a clean, empty container and use it for another purpose, such as filling up your car or powering a lawn edger.

Just be sure to label the container clearly and keep it out of reach of children and pets. If you don’t want to keep the gas, you can simply pour it into the ground.

As a result, this should only be done in small amounts and in an area where there is no vegetation. Gasoline can contaminate soil and water, so it’s important to be mindful of how you dispose of it.

3. Can I Use Any Type Of Gas In My Lawnmower?

Yes, you can choose any type of gasoline for your lawnmower. In any case, it is recommended that you use unleaded gasoline because it produces fewer emissions than leaded gasoline. Furthermore, unleaded gasoline will not damage your lawnmower’s engine like a leaded gasoline can.

If you must use leaded gasoline, be sure to add an octane booster to prevent damage to your engine. Overall, it is best to use unleaded gasoline in your lawnmower to prevent emissions and engine damage.

4. How do I know if my lawn mower has bad gas?

 How do I know if my lawn mower has bad gas

Your mower will most likely be hesitating or sputtering if it has bad gas in it. This is a telltale sign of bad gas. This happens because bad gas doesn’t burn as well as good gas, so the engine isn’t getting the power it needs.

If you notice this happening, it’s time to check your gas. Another indication of bad gas can be found if your mower simply won’t start. This is usually because the bad gas has clogged up the carburetor.


To maintain your mower for a long time, you must drain its gas tank. Not only does it help to minimize engine accidents, but it can also be cost-effective. Once you understand how to drain gas from lawn mower without siphoning, it’s time to put your skills to the test. It would be wise to practice on an empty tank before trying this with gasoline.

Remember, safety first. And when you’re finished, be sure to take care of any spills or leaks and remove the fuel from the area. Have fun mowing your lawn, and don’t forget to enjoy the fruits of your labor.