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How to Winterize Your Lawn Mower

Extend the life of your lawnmower by winterizing the engine. Adding fuel stabilizer and a few ounces of oil will help the engine start right up without hesitation in the spring.

By the DIY experts of The Family Handyman Magazine

Clean, lubricate and prep the engine

With a little post-season preparation, you can ensure that your mower will start like an Olympic sprinter when you roll it out in spring. Fill the fuel tank and add fuel stabilizer to the gasoline to prevent fuel deterioration and the formation of gum, varnish and rust in the fuel system. Run the mower to circulate the additive throughout the fuel system. Lubricate the rest of the engine as shown in the photo. Thoroughly clean the outside and bottom of the mower, and disconnect the spark plug wire and the negative cable from the battery (if you have one). Lubricate all moving parts and spray rust inhibitor on the blade and surrounding unpainted metal parts. When spring rolls around, simply replace the spark plug wire and battery cable, and your mower will run like a champ.

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Required Tools for this Project

Have the necessary tools for this DIY project lined up before you start—you’ll save time and frustration.

    • Socket/ratchet set
    • Rags

You'll also need a funnel

Required Materials for this Project

Avoid last-minute shopping trips by having all your materials ready ahead of time. Here's a list.

    • Engine oil
    • Fuel stabilizer

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How to Winterize Your Lawn Mower

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