Storing your lawn mower properly in the garage can extend its life and save you money on repairs. This guide walks you through cleaning, preparing, and organizing your mower so it’s ready to use when spring arrives. With simple steps, you’ll protect your investment and keep your yard looking sharp all year long.
Key Takeaways
- Clean Before You Store: Always clean the deck, blade, and undercarriage to prevent rust and corrosion during storage.
- Drain or Stabilize Fuel: Use fuel stabilizer if storing for short periods, or drain the tank completely if storing long-term to avoid gumming up the engine.
- Change the Oil: Fresh oil reduces moisture buildup and protects internal components from rust.
- Sharpen or Replace Blades: Sharp blades last longer and cut grass cleaner—check them before storage.
- Store Upright or Level: Prevent oil leaks and fluid pooling by storing your mower upright or on a level surface.
- Use a Cover or Tarp: Protect your mower from dust, moisture, and accidental spills with a fitted cover.
- Check Monthly: Inspect stored mowers every few weeks to ensure they remain dry, stable, and free of pests.
How to Store a Lawn Mower in the Garage: A Complete Guide
If you’ve just finished mowing your lawn and are wondering how to store a lawn mower in the garage, you’re not alone. Many homeowners treat their mowers like tools that can be tossed into the corner after use—but proper storage makes a huge difference. A well-maintained mower stored correctly will start easily, last longer, and perform better when you need it next season.
In this guide, you’ll learn exactly how to store a lawn mower in the garage so it stays in great condition between uses. We’ll walk you through every step, from cleaning to fuel preparation, blade care, and safe positioning. By following these steps, you’ll protect your investment and avoid common mistakes that lead to costly repairs.
Why Proper Lawn Mower Storage Matters
Storing your mower incorrectly is like leaving your car sitting in a puddle for months. Moisture, dirt, and stale fuel can cause rust, clogged carburetors, and seized engines. When spring rolls around, you might find your mower won’t start or performs poorly. But with proper garage storage, you reduce wear and tear, extend the machine’s lifespan, and save time troubleshooting later.
Step 1: Clean Your Lawn Mower Thoroughly
Remove Grass Clippings and Dirt
The first step in how to store a lawn mower in the garage is to give it a deep clean. Grass clippings stuck in the deck attract mold and bacteria, while mud and debris can scratch surfaces and trap moisture. Use a hose (preferably with low pressure) or a pressure washer on a gentle setting to blast away buildup from the underside of the mower.
Be careful not to spray directly into air filters, spark plugs, or electrical components unless you’ve removed the parts first. After rinsing, wipe down the entire mower with a damp cloth. Let it dry completely before moving to the next step—never store a wet mower!
Inspect and Sharpen the Blade
A dull blade tears grass instead of cutting it cleanly, leading to brown tips and stressed turf. While you’re cleaning, take a few minutes to check the blade’s condition. Look for nicks, bends, or excessive wear. If needed, sharpen the blade using a file or grinder—or replace it entirely if damaged.
For detailed instructions on sharpening, see our guide on how to sharpen the blade on a lawn mower. A sharp blade also helps prevent rust by allowing less contact with moisture during storage.
Step 2: Prepare the Engine and Fluids
Run the Mower Until It’s Nearly Empty
Before adding fresh gasoline, run your mower until the tank is nearly empty. This prevents old fuel from sitting in the lines and carburetor, which can gum up over time. Running it out also helps burn off any moisture inside the combustion chamber.
Add Fuel Stabilizer or Drain the Tank
If you plan to store your mower for less than 30 days, add a high-quality fuel stabilizer to the empty tank and run the engine for about five minutes to circulate it through the system. This keeps the fuel fresh and prevents varnish buildup.
For long-term storage (more than 30 days), it’s best to drain the fuel completely. Use a siphon pump or remove the fuel line to extract as much gasoline as possible. Dispose of used fuel responsibly—many auto parts stores accept it for recycling.
Change the Oil
Old oil contains contaminants and moisture that accelerate engine corrosion. Change the oil after running the mower one last time. Follow your manufacturer’s guidelines for oil type and capacity. After draining, refill with fresh oil to protect the engine internals during storage.
Need help changing oil? Check out our step-by-step guide for how to change oil in a lawn mower.
Step 3: Protect Moving Parts and Electrical Systems
Lubricate Key Components
Wipe down or lightly lubricate moving parts like the wheels, axle, and height adjustment levers. Use a light machine oil or silicone-based lubricant to prevent stiffness and rust. Avoid petroleum-based oils near rubber components—they can degrade over time.
Disconnect the Battery (If Applicable)
If your mower has an electric starter or battery-powered accessories, disconnect the battery to prevent drain and corrosion. Store it in a cool, dry place away from metal objects. Some models allow you to remove the battery entirely; others just need the terminals cleaned and capped with dielectric grease.
Cover Spark Plug Wires
Dust and moisture love to collect around spark plugs. Remove the plug wire and cover it with a rubber cap or electrical tape to keep debris out. Reattach the plug securely once storage begins.
Step 4: Position Your Mower Correctly
Store Upright or on a Level Surface
Never lean your mower against a wall or stack it on its side. Doing so can cause oil to seep into the cylinder head, creating sludge and starting issues later. Instead, stand it upright or place it on a level concrete pad or sturdy shelf. Use wheel chocks if necessary to prevent rolling.
Keep It Off the Ground
Place your mower on a wooden pallet, plastic shelf liner, or dedicated mower stand. This keeps it off damp concrete, prevents tire flat spots, and allows airflow underneath. If space is tight, consider vertical storage racks designed for lawn equipment.
Step 5: Use a Protective Cover
Choose a Breathable Garage Mower Cover
A waterproof tarp might seem like the obvious choice, but breathable covers are better for long-term storage. They repel rain and dust while allowing moisture to escape—avoiding condensation that leads to rust. Look for covers made of canvas or polyester with elastic hems to fit snugly.
Don’t Forget the Deck
Some covers only protect the body. Make sure yours also shields the mowing deck. Alternatively, you can wrap the deck separately with a towel or old sheet to absorb any accidental spills.
Step 6: Schedule Regular Checks
Inspect Monthly During Storage
Even the best storage isn’t foolproof. Check your mower every few weeks to ensure it remains dry, covered, and undisturbed. Look for signs of pests (like mice nesting in the deck), water damage, or loose parts. If you notice anything unusual, address it immediately.
Prepare for Spring Startup
About two weeks before mowing season begins, inspect and service your mower. Change the oil again, refill with fresh gas (with stabilizer), and test-start it. Refer to our guide on how to start a lawn mower after the winter if you encounter any issues. This ensures your mower is ready when you need it most.
Troubleshooting Common Storage Problems
Mower Won’t Start in Spring
If your mower cranks but doesn’t start after storage, the culprit is often clogged carburetors caused by old fuel. Try cleaning the carburetor using an aerosol cleaner or rebuild kit. For Briggs & Stratton engines, our guide on how to clean a Briggs and Stratton lawn mower carburetor walks you through the process step by step.
Rusty Blades or Deck
If rust appears despite cleaning, sand it gently with fine-grit sandpaper and apply a thin coat of mineral spirits or penetrating oil. Never skip the drying step—moisture is the enemy of metal.
Pests Inside the Deck
Rodents love warm, enclosed spaces. To deter them, store your mower upside-down occasionally (if safe for your model) or use peppermint oil-soaked cotton balls near the deck. Avoid leaving food scraps nearby—even grass clippings can attract pests.
Conclusion
Storing your lawn mower in the garage doesn’t have to be complicated. By cleaning thoroughly, stabilizing or draining fuel, changing oil, protecting electrical parts, and using a breathable cover, you set your mower up for success. These steps not only prevent common problems but also save you time and money in the long run.
Remember: proper storage is an act of self-care for your yard tool. Whether you’re storing it for a few weeks or several months, taking these precautions ensures your mower starts strong and cuts beautifully every time. And when spring comes, you’ll be ready to tackle that lawn without stress.