A well-maintained lawn mower can last 10-15 years or more. Neglect it, and you might be shopping for a replacement in just 3-4 seasons. Whether you have a gas, electric, or riding mower, this guide covers every maintenance task you need to know.
After Every Mow
- Clean the deck: Use a putty knife or deck scraper to remove caked-on grass clippings. Grass buildup restricts airflow and reduces cutting efficiency.
- Inspect the blade: Look for obvious damage, bends, or excessive dullness.
- Wipe down the exterior: A quick wipe prevents buildup of dirt and moisture that can lead to corrosion.
Monthly Maintenance
- Check tire pressure (riding mowers): Uneven tire pressure causes an uneven cut.
- Inspect the air filter (gas mowers): A clogged filter reduces engine performance and increases fuel consumption.
- Check battery charge level (electric mowers): Keep batteries charged between 20-80% for maximum longevity when stored.
- Lubricate moving parts: Apply lightweight oil to wheels, axles, and cables.
Seasonal Maintenance (Start of Season)
Gas Mowers
- Change the engine oil
- Replace the spark plug
- Install a new air filter
- Sharpen or replace the blade
- Clean the fuel system if you did not use stabilizer
- Check and adjust the drive belt
Electric Mowers
- Sharpen or replace the blade
- Fully charge the battery
- Clean the battery contacts with a dry cloth
- Inspect the power cord (corded models) for damage
- Test the safety switch
Blade Sharpening Guide
A sharp blade cuts grass cleanly, promoting healthy growth. A dull blade tears grass, leaving brown, ragged tips that invite disease.
How to sharpen: Remove the blade, secure it in a vise, and use a 10-inch mill file or bench grinder to sharpen at the existing bevel angle (usually 30-45 degrees). File equal amounts from each end to maintain balance. Test the balance on a nail driven into the wall. If one side dips, file a bit more from that end.
Winter Storage Tips
- Gas mowers: Run the engine dry or add fuel stabilizer to a full tank. Store in a dry location.
- Electric mowers: Remove the battery and store it indoors at room temperature. Keep the charge between 40-60%.
- All mowers: Clean thoroughly, sharpen the blade, and apply a light coating of oil to metal surfaces to prevent rust.
