Why Winter Mower Storage Matters
Proper winter storage extends your lawn mower's lifespan by years. Leaving fuel in the carburetor over winter causes gum deposits that clog fuel lines and prevent spring startup. Follow these proven steps to protect your investment.
Step 1: Drain or Stabilize the Fuel
You have two options for fuel management before winter storage:
- Drain completely: Run the engine until it stops from lack of fuel, then drain the tank
- Add stabilizer: Fill the tank fresh, add fuel stabilizer per instructions, run for 5 minutes to circulate
Fuel stabilizer is the easier option and keeps the fuel system sealed from moisture.
Step 2: Change the Oil
Used oil contains combustion byproducts that are acidic and corrosive. Drain the old oil while the engine is warm, then refill with fresh oil to the manufacturer's recommended level.
Step 3: Remove or Sharpen the Blade
Inspect the cutting blade for damage. A dull or nicked blade tears grass instead of cutting it cleanly, leading to brown tips and disease susceptibility. Sharpen or replace the blade before storing.
Step 4: Clean the Deck Thoroughly
Scrape off all grass clippings and mud from the underside of the deck. Wet debris trapped over winter causes rust and corrosion. Use a putty knife and wire brush, then spray with a light coat of oil to prevent rust.
Step 5: Battery Care
For electric-start mowers, remove the battery and store it indoors at room temperature. Connect a trickle charger or battery maintainer to keep it topped up over the winter months.
Step 6: Choose the Right Storage Location
Store your mower in a dry, covered location like a garage or shed. Avoid damp basements or unheated outbuildings where condensation can form on metal surfaces. Cover the mower with a breathable fabric cover.
Spring Startup Checklist
When spring arrives, check: fresh fuel, clean air filter, proper oil level, sharp blade, and charged battery. With proper winter storage, your mower should start on the first pull.
