Getting Old Gas Out of Lawn Mower: A Complete Guide

To get old gas out of a lawn mower, disconnect the spark plug and drain the fuel tank and carburetor. Then add fresh fuel and replace the spark plug.

Having old gas in your lawn mower can cause problems with starting and running the engine smoothly. It’s important to remove any stale gas to ensure that your lawn mower functions properly. In this article, we will show you the exact steps that you need to follow to get old gas out of a lawn mower. By the end of this article, you will know how to remove old gas from the fuel tank and carburetor, as well as how to add fresh fuel to your lawn mower. By following these simple instructions, you can save your mower and keep your lawn looking great!

Getting Old Gas Out of Lawn Mower: A Complete Guide


Understanding The Dangers Of Stale Gas

Old, stale gasoline can wreak havoc on your lawn mower’s engine, causing it to run inefficiently or even completely break down. It’s crucial to understand the dangers of using old gas in your mower, and the potential damage it could cause.

Before attempting to remove old gas from your lawn mower, it’s important to know when it’s time to change it out. Look for signs such as a foul odor or darkened color, which indicate a need for fresh gasoline. By regularly maintaining your lawn mower’s gasoline supply, you can extend the life of your mower and ensure that it runs smoothly.

Finding The Right Tools And Materials

Getting rid of old gas from a lawn mower requires the right tools and materials. First, safety gear like gloves and goggles should be worn. Next, gather tools such as a fuel siphon, funnel, and drip pan. You’ll also need fuel containers to hold the old gas.

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Once you’ve gathered your tools and materials, siphon the old gas from the mower and dispose of it according to local regulations. Remember to never dump old gas down the drain or in the trash. Proper disposal of old gas is essential for the environment and safety.

With the right tools and materials, getting rid of old gas from a lawn mower can be a simple and safe task.

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Preparing The Lawn Mower

If you want your lawn mower to perform well, you need to prepare it beforehand. The first step is to empty the oil and gas tank carefully. Once done, clean the fuel tank properly to get rid of the old gas.

It’s important to unplug the spark plug too, to prevent any accidental firing. By following these steps, you can ensure that your old gas out of the lawn mower and keep it in optimal working condition. It’s essential to follow these steps to avoid any damage to your lawn mower.

Remember, the key to keeping your lawn mower running smoothly is proper maintenance.

Disposing Of Old Gasoline

Emptying old gasoline from your lawn mower before the start of every mowing season is a must. You must know how to dispose them off legally. Illegal disposal can result in hefty fines. Storing gasoline properly is equally important. It is suggested to store it in airtight containers in a cool and dry place.

Always follow the safety instructions while handling any kind of gas. Gasoline fumes are highly flammable and can ignite easily. Keep in mind that gasoline should not be stored for more than 3-6 months. If you have an excess amount, dispose it off in a proper way.

Knowing the proper ways to dispose and store gasoline can go a long way in ensuring safety.

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Adding Fresh Gasoline

Old gas in your lawn mower can cause a lot of problems, including starting issues, engine damage, and even total engine failure. The best way to get rid of old gas is to add fresh gasoline to your mower’s tank.

Be sure to do it properly by following the manufacturer’s instructions. Additionally, you can add a fuel stabilizer to your gasoline before putting it in your mower to help prevent future issues with stale gas. To avoid stale gas in the future, it’s important to use high-quality gasoline and to empty out your mower’s tank if you plan on storing it for an extended period of time.

By following these tips, you can keep your lawn mower running smoothly and avoid costly repairs down the line.


To sum up, getting old gas out of a lawn mower is not a complicated task. You just need to have the right tools, take safety measures and follow simple instructions. There are different methods you can use to remove the old gas, such as siphoning, draining, or using a fuel stabilizer.

If you’re unsure which method would be best for your lawn mower, it’s recommended to consult your user manual or a professional technician. Remember to dispose of the old gas properly, as it can harm the environment if not handled correctly.

Maintaining your lawn mower with fresh gas and proper care will ensure it runs smoothly and lasts longer. Following these tips will save you time and money in the long run, as you won’t have to make costly repairs due to old gas buildup.