How to Maintain Your Lawn Mower
Learn how to maintain your lawn mower with our complete UK guide. Step-by-step mower maintenance tips, seasonal care, and FAQs to keep your mower running smoothly.

A well-maintained lawn mower cuts better, lasts longer, and keeps your lawn healthy. Follow this Garden-Review guide to learn how to maintain your lawn mower with simple monthly checks and seasonal care.
Lawn Mower Maintenance Calendar
Regular lawn mower maintenance throughout the year prevents breakdowns and improves performance. Use this calendar to keep your lawn mower well maintained throughout the year and reduce the risk of breakdowns during the mowing season.
Before You Start: Safety First
- Switch off the mower and allow it to cool
- Remove the spark plug cap on petrol mowers
- Disconnect power or remove batteries on electric mowers
- Check the owner’s manual for model-specific guidance
You Will Need
- Petrol lawn mower
- Clean cloth
- Socket wrench
- Adjustable spanner
- Light machine oil
Total time: 15 minutes
Step 1: Check and Clean the Spark Plug
Remove the spark plug using a socket wrench. If it is lightly dirty, brush it clean. Replace heavily worn or fouled plugs, which typically cost under £5.
Step 2: Check the Oil Level
Remove the dipstick, wipe it clean, reinsert it, then check the oil level. Top up or replace oil as recommended by the manufacturer.
Step 3: Inspect the Air Filter
Check the air filter monthly and replace it when dirty. A clean air filter improves engine efficiency and performance.
Step 4: Clean and Protect the Exterior
Wipe the mower body and handles with a lightly oiled cloth to remove dirt and protect against rust.
Step 5: Clean the Underside of the Mower
Tip the mower with the air filter facing upwards and clean grass build-up from the underside. Check the wheels and tighten loose bolts if required.
Additional Lawn Mower Maintenance Tips
Sharpen the Blade
Sharpen mower blades once or twice per season to ensure clean grass cuts and prevent lawn damage.
Check Fuel Quality
Petrol degrades over time. Always empty the fuel tank before winter storage to avoid carburettor issues.
Preparing Your Lawn Mower for Winter Storage
- Empty the fuel tank
- Clean the mower thoroughly
- Store in a dry, frost-free location
Why Lawn Mower Maintenance Matters
Regular lawn mower maintenance improves cutting quality, extends lifespan, reduces fuel consumption, and lowers repair costs.
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Lawn Mower Maintenance Frequently Asked Questions
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