Winterizing Your Lawn Mower in Four Essential Steps

Protect your investment and ensure a smooth start next spring by properly winterizing your lawn mower. Begin with a sturdy pair of work gloves—mowers have sharp components that can cause serious cuts.

Step 1: Remove All Fuel

Gasoline left over winter thickens, separates, and causes starting problems. Methods vary by mower: some have removable tanks or drain valves; others require siphoning. The simplest approach is running the mower until empty. If you must drain it, transfer the fuel to a vehicle or snowblower rather than storing it. Never store gasoline long-term in the mower.

Step 2: Drain and Replace Oil

Drain both gearbox and crankcase oil. Many owners neglect oil changes for years, but annual replacement dramatically extends engine life. This habit benefits any engine stored for extended periods.

Step 3: Disconnect the Battery

Even when off, mowers draw tiny amounts of power. Disconnect or remove the battery entirely. Store it indoors—basement storage is far gentler than a cold garage or barn, as batteries drain faster in extreme temperatures.

Step 4: Thorough Cleaning and Protection

Clean the entire mower, paying special attention to blades and discharge areas. Remove all grass clippings and debris to prevent rust and premature wear. Sharpen blades now for next season. Coat all exposed metal surfaces with light grease to prevent winter corrosion.

The Payoff

Completing all four steps takes under an hour and can add years to your mower's life. Even performing just one step is better than nothing—every effort pays dividends in equipment longevity.