How to Winterize a Lawn Mower

| Updated On: May 3, 2023
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Winterizing a lawn mower is important to ensure its longevity and performance throughout the winter months. First, remove any debris from the underside of the mower deck with a brush or small vacuum cleaner. Next, change out the oil and filter in order to get rid of any dirt and contaminants that may have built up over time.

After this, clean all exposed surfaces using soapy water and a cloth or sponge. Once cleaned, lubricate all moving parts such as spindles and cables with WD-40 spray lubricant. Finally, add a fuel stabilizer to your gasoline tank in order for it to be stored properly during cold weather months without developing issues that can damage your engine when restarted again in the springtime.

With these steps, you will easily ensure your lawn mower is ready for storage until next season!

  • Drain the Fuel Tank: Before putting your lawn mower away for the winter, it is important to drain any fuel from the tank as well as from the carburetor
  • This will help prevent any damage that can be caused by condensation or solvent separation of components in the engine over time
  • To do this, first shut off the gas valve on your fuel tank and remove any remaining gasoline into a container for safe disposal
  • If you have an older model lawn mower that still has a carburetor, use a small screwdriver to depress and hold down the pin at its base while simultaneously draining out whatever fuel remains in its bowl
  • Clean Underneath Deck: Use a brush or garden hose to clean off any grass clippings and debris from underneath your lawn mower’s deck before storing it away for wintertime
  • Remove stuck-on dirt with an old toothbrush if needed; just make sure not to scratch up surfaces too much when doing so as this might leave scratches visible after being painted over during servicing later on down the line
  • Take care not to get water inside air filters or other electrical components during cleaning! 3
  • Change Oil & Spark Plug: Changing both the oil and spark plug in your lawn mower before storage is highly recommended since they become less efficient over time due to wear & tear which can result in issues upon starting it back up again come springtime!
  • Begin by removing old oil with a suction device or siphoning tube followed by draining out all remaining liquid slowly through a dipstick hole located near the bottom of the engine block (careful not to spill!)
  • Afterward, replace the spark plug with a new one while ensuring proper gapped distance between electrodes (consult owner’s manual if necessary)
  • Finally, add fresh motor oil until the level reaches the “FULL” mark on the dipstick once more – just enough so no metal parts are exposed but don’t go overboard either otherwise extra strain may be placed onto internal components when running next season!
  • Store Lawn Mower Outdoors: Once everything else has been taken care of, find a suitable outdoor location where you can store your lawnmower such as the shed, garage, etc, making sure the ground is clear of objects like stones/debris which could potentially cause damage during transport process – ideally somewhere sheltered away from rain/snowfall yet still providing adequate ventilation throughout year-round months ahead

Should I Run My Lawn Mower Out of Gas for Winter

Running your lawn mower out of gas before winter is generally not necessary and can cause more harm than good. Fuel tends to degrade over time, so if you leave any in the tank, it may become stale or corrode parts of the mower. Additionally, running a lawnmower dry often causes sediment build-up in the carburetor which can be difficult to remove without professional help.

For these reasons, it’s best to drain all fuel from the mower before storing for winter and replace it with fresh fuel when you use it again in springtime.

Winterizing Riding Lawn Mower

Winterizing a riding lawn mower is an important task to complete before the cold weather sets in. It helps to extend the life of your mower and ensure that it runs reliably when you start using it again in the spring. To winterize, first, make sure that all gas has been drained from the tank and carburetor, then clean any debris or grass clippings from underneath the deck.

After this is done, apply lubricant to all hinges and springs on the machine as well as any exposed metal parts. Lastly, store your mower in a dry location such as a garage or shed until it’s ready for use again next season!

How to Use Fuel Stabilizer in Lawn Mower

Using a fuel stabilizer in your lawn mower is an important step to help keep it running smoothly and efficiently. Before adding the stabilizer, make sure you have enough gas in the tank to mix with the additive. Next, add one ounce of fuel stabilizer for every two-and-a-half gallons of gasoline.

Then start up your engine and let it run for about five minutes so that the stabilized fuel can circulate through all parts of the machine’s carburetor system. Finally, shut off your lawn mower and you’re good to go!

Forgot to Winterize Lawn Mower

If you forgot to winterize your lawn mower, it’s not too late! Start by draining the gas tank and adding a fuel stabilizer which will help protect the engine from any damage caused by moisture or temperature changes. After that, change out the spark plug and oil filter.

Finally, lubricate all metal parts with light machine oil to keep them from corroding over time. Following these steps will ensure your lawnmower is ready for use come spring!

Winterize Lawn Mower Fuel Stabilizer

Using a fuel stabilizer in your lawn mower is an essential part of winterizing it. Fuel stabilizers help to keep the gasoline from breaking down and separating during long periods of storage, which can damage the engine and lead to costly repairs. They also reduce carbon deposits that can restrict airflow in the carburetor, leading to poor performance.

While most fuels are formulated with stabilizers already included, if you plan on storing your lawn mower for more than 30 days it’s important to use an additional fuel stabilizer for optimal protection over time.

How to Winterize a Lawn Mower


Should You Leave Gas in Your Lawn Mower Over the Winter?

It is not recommended to leave gas in your lawn mower over the winter. Gas deteriorates quickly and can cause gum, varnish, and rust buildup inside your engine if left sitting too long. Additionally, ethanol-blended gasoline can absorb water from the atmosphere which can lead to corrosion of internal components as well as fuel line clogs or blockages.

It’s best to drain any remaining gas before storing it for the season so you won’t have any issues when trying to start it up again come springtime.

What Do You Put in a Lawn Mower to Winterize It?

When winterizing a lawn mower, it is important to ensure the engine is properly maintained. To do this, you should drain all of the fuel from the tank and replace it with fresh oil. This will help prevent corrosion over time.

Additionally, remove any spark plugs or filters and clean them thoroughly before reinstalling them in their respective positions. You should also check your battery for any damage or corrosion and replace it as necessary to ensure reliable starting power during the winter months.

Finally, apply lubricant to areas such as shafts, levers, and other moving parts that can suffer wear due to prolonged lack of use during colder weather months. Taking these steps will help keep your lawn mower running smoothly throughout the winter season!

How Do I Run Gas Out of My Lawn Mower Before Winter?

To ensure your lawn mower is properly maintained and ready for storage during the winter months, you’ll need to run all of the gas out of it before putting it away. To do this, start by disconnecting any spark plugs or battery cables so that your engine will not start while running off the remaining fuel.

Once those are disconnected, turn on the fuel valve located near the carburetor and allow any remaining gasoline to run through until only fumes come out of the exhaust pipe.

Finally, add a few drops of oil into each cylinder before pulling them several times in order to coat all parts that have been exposed to gasoline with a layer of oil.

Should I Empty the Oil Out of My Lawn Mower in the Winter?

Yes, you should empty the oil out of your lawn mower in the winter. Emptying the oil can help prevent damage to your engine caused by condensation and freezing temperatures. For best results, drain out any remaining fuel from the tank first, then remove the oil plug and let all of the old oil slowly drain out into an approved container.

Once all of the old oil is removed, replace it with new high-quality motor oil that is designed for use in two-cycle engines like those found in most lawnmowers. Finally, make sure to reattach all parts securely before storing away or using your lawnmower again next spring.



By following the steps outlined in this blog post, your lawn mower should be prepped and ready for winter. Taking the time to properly maintain your lawn mower can help extend its life and ensure that it runs smoothly when you need it most.

Winterizing a lawn mower may seem like a daunting task, but with some patience and elbow grease, you can get through it quickly and easily.

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