Winter is approaching, and your trusty lawn mower deserves proper care before its seasonal rest. Ensuring a trouble-free start next spring requires proper winterization that protects your mower and keeps it ready for the season ahead.
Without proper preparation, you risk fuel system problems, corrosion, and costly repairs that could have been easily prevented. That’s why understanding how to winterize a lawn mower is very essential.
Keep reading to learn more about this winter maintenance process that will save you time, money, and frustration when spring arrives.
How to winterize a lawn mower?
Follow these detailed steps to properly prepare your lawn mower for winter storage.
Each step addresses specific areas that require attention to prevent damage and ensure optimal performance.
1. Thorough cleaning
Start by removing all grass, clippings, and debris from the deck and undercarriage using a brush or pressure washer. Built-up organic matter retains moisture and can cause corrosion during storage.
After cleaning, allow the mower to dry completely before proceeding. Once dry, apply a light coat of oil or silicone spray to metal surfaces to inhibit rust formation.
This protective coating creates a barrier against moisture that may enter your storage area during winter months.
2. Fuel system management (gas models)
For gas-powered mowers, fuel system care is critical. You have two effective options: completely drain old fuel to prevent carburetor clogging, which eliminates the risk of fuel degradation entirely. This method requires running the engine until it stops from fuel starvation.
Alternatively, add a quality fuel stabilizer to the tank, fill with fresh fuel, and run the engine for several minutes to circulate the treated fuel throughout the system.
This method maintains fuel quality and makes spring startup easier. Choose the approach that best fits your comfort level and manufacturer recommendations.
3. Engine oil and component care
Change the engine oil before storage, as old oil contains contaminants and acids that can damage internal components during extended storage periods. After adding fresh oil, run the engine briefly to coat all internal parts with clean lubricant.
Check or replace the air filter and spark plug to ensure proper engine startup next season. A clean air filter prevents debris from entering the engine, while a fresh spark plug eliminates potential ignition problems.
These inexpensive components impact your mower’s spring performance.
4. Battery or spark plug removal
For electric mowers, remove the battery and store it in a cool, dry place with temperatures between 32–80°F.
Clean the battery terminals and check the charge level periodically during storage. Some batteries require periodic charging to maintain optimal performance.
For gas mowers, disconnect the spark plug wire to prevent accidental starts during storage or maintenance. This safety measure protects you and prevents potential engine damage from unexpected operation.
5. Lubrication & brake maintenance
Apply grease to wheels, axles, and linkages to protect against rust and ensure smooth operation when you resume mowing. Focus on pivot points, height adjustment mechanisms, and any exposed metal components that move during operation.
Lightly oil the blade or remove it entirely for safe storage. If keeping the blade attached, apply a thin coat of oil to prevent rust.
If removing the blade, store it in a dry location and consider professional sharpening during the off-season.
6. Safe storage location
Store your mower in a dry, well-ventilated location, preferably a garage or shed. Avoid areas near heaters or appliances with pilot lights, as fuel vapors can pose safety risks. Good ventilation prevents moisture buildup that leads to rust and corrosion.
If indoor storage isn’t possible, use a heavy-duty, breathable tarp and elevate the mower on blocks or a platform to reduce moisture exposure from ground contact. Ensure the cover allows air circulation while protecting against precipitation and debris.
7. Final checklist & spring prep tips
Complete a final inspection to ensure your mower is properly positioned and secured. Verify that all covers are in place, the mower sits upright or in the manufacturer-recommended storage position, and the storage area remains pest-free throughout winter.
Before spring arrives, prepare necessary maintenance supplies including fresh fuel, a new spark plug, and engine oil.
Plan your spring tune-up schedule to address any items that need attention after storage, ensuring your mower is ready for the upcoming season.
Why proper lawn mower winterization matters
Proper winterization is crucial for maintaining your lawn mower’s performance and longevity. Cold weather, moisture, and extended storage periods create ideal conditions for various problems that can damage your equipment.
Winterization prevents fuel gumming, corrosion, and engine wear that can lead to costly repairs. Old fuel left in the system becomes sticky and thick, clogging carburetors and fuel lines. Meanwhile, moisture can cause rust formation on metal components, while oil breakdown leads to increased engine wear during storage.
The process ensures reliable spring start-up for both gas and electric mowers. A properly winterized mower starts easily when you need it most, eliminating the frustration of dealing with mechanical issues during peak mowing season.
This preparation protects internal components from moisture, freezing, and battery damage that commonly occur during winter storage.
Winter storage tips for riding vs. push mowers
Different mower types require specific storage considerations to maintain optimal condition during winter months.
Push mowers
Push mowers work well in compact storage spaces and can often be stored upright if safe and stable. Many models feature folding handles that reduce storage footprint.
Always cover the mower and elevate it slightly off the ground to prevent moisture contact, even in indoor storage areas.
Riding lawn mowers
Riding lawn mowers require more comprehensive preparation due to their complexity. Address both fuel and oil systems thoroughly, ensure tires are properly inflated and supported to prevent flat spots, and remove the battery for separate storage.
Following Consumer Reports recommendations, change fluids before storage and consider using a battery tender for optimal battery maintenance.
Trouble‑shooting winter startup issues
Even with proper winterization, you may encounter startup issues after winter storage. Here are common problems and solutions.
- Won’t start: Begin by inspecting the spark plug for fouling or corrosion, and check the air filter for clogs or damage. Clean the blade area and inspect fuel lines for blockages or damage. Verify that fuel is fresh and flowing properly to the carburetor.
- Rust or sticky parts: Lubricate all moving components with appropriate oils or greases. Clean any visible rust spots with fine steel wool and apply rust preventive treatments. Check that all controls move freely and adjust as necessary.
- Low battery power: For electric mowers, recharge or replace the battery before attempting to start. Test battery voltage and connections to ensure proper power delivery. Consider battery replacement if it fails to hold a charge adequately.
Conclusion
Proper winterization safeguards your mower investment, ensures smooth operation come spring, and significantly prolongs equipment lifespan.
The time and effort invested in these preventive measures pays dividends by avoiding frustration and expensive repairs when you need your mower most.
A little preparation now saves both money and aggravation later, allowing you to focus on maintaining a beautiful lawn rather than fixing preventable problems.
Check out more lawn mower guides and other garden tools to keep your garden at its best from our gardening knowledge base, where you’ll find comprehensive resources for all your landscaping needs.
Frequently asked questions (FAQs)
Should I completely drain the fuel or use a stabilizer?
Both methods work effectively – draining prevents old fuel issues entirely, while stabilizer protects fuel if you prefer storing the mower with gas in the tank. Follow your manufacturer’s specific guidance, as some engines perform better with one method over the other.
Can I leave the mower outside during winter?
Only if properly covered with a breathable, waterproof cover and elevated off the ground. However, indoor storage in a garage or shed remains the best option for protecting your equipment from temperature extremes and moisture.
When should I winterize my mower?
Complete winterization after your final mowing session before freezing temperatures arrive – typically in late fall. This timing varies by geographic location, but generally occurs between October and November in most US regions.
Do lawn mowers need to be winterized?
Yes, winterization is essential for preventing fuel system problems, corrosion, and component damage during storage. Proper preparation protects your investment and ensures reliable spring performance, regardless of whether you own a gas or electric model.
Should you leave gas in a lawn mower over winter?
This depends on your chosen method. You can either drain all fuel to prevent degradation or add fuel stabilizer and store it with treated fuel. Both approaches work when executed properly, though draining eliminates any risk of fuel-related problems.
How do I prepare my lawn mower for winter?
Follow the comprehensive steps outlined above: clean thoroughly, manage the fuel system, change oil, remove batteries or disconnect spark plugs, lubricate moving parts, and store in a proper location.
