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How to service a lawn mower

By Bunnings Magazine /

Man servicing a lawn mower.
Mower know-how will save you time and money. Whether you have a push, petrol or electric model, these maintenance tips will help you keep it in good nick.

A well-maintained lawn mower not only ensures a cleaner cut but also saves you time and money in the long run. No matter which type you’re using, keeping your mower in good condition is key to a healthy lawn and a smoother mowing experience.

Safety tip: Always wear the appropriate safety equipment (safety glasses, gloves, ear muffs and a mask, for example) and always follow the instructions for the product or equipment.

Push mowers

This type is best suited to small areas of lawn. Manual push mowers rely on muscle power to spin the blades, but there are also battery-powered options. Both types come with a grass cutter, are low maintenance and simple to operate.

Maintenance tips

  • Regularly sharpen the blades with a grindstone to ensure a clean cut and reduce strain on the mower.
  • Remove grass clippings and debris after use to keep the mower in good condition and store it in a dry location to prevent rust.
  • Frequently inspect the mower for loose bolts or nuts, especially around the handle and blade assembly. Tighten them as needed to ensure the machine operates safely and efficiently.

    Petrol mowers

    Run by an engine, petrol mowers are suitable for medium-to-large lawns. They offer extra power and mobility but require more maintenance due to their complex mechanics.

    Maintenance tips

  • Check the oil and oil level regularly, and change it when it becomes dirty or low. Clean oil prevents engine wear and keeps the mower running smoothly.
  • Inspect the spark plug periodically and replace if necessary. A clean spark plug ensures efficient engine starting and combustion.
  • Clean air filters regularly to allow proper airflow to the engine. If the air filter is torn or damaged, replace it to prevent engine damage.

    Electric mowers

    Powered by either a corded or battery-operated motor, electric mowers are quieter and more eco-friendly than petrol mowers and are ideal for small-to-medium lawns.

    Maintenance tips

  • For corded models, check the cord regularly for damage or wear and replace it if necessary to avoid safety hazards.
  • For battery-operated models, ensure the battery is charged and stored properly, and keep battery contacts clean for optimal performance.
  • Each time you use the mower, clean the underside afterwards to prevent grass build-up, which can affect the cutting performance of the machine.

    Bonus mower tips

  • Regular mowing prevents overgrowth, reducing your mower’s workload and saving you from costly repairs.
  • Sharpen or replace mower blades annually. They’ll cut grass more efficiently, reducing the strain on the engine and extending the mower’s lifespan.
  • Only buy as much fuel as you need for the season. ‘Stale’ petrol can damage your mower’s engine.

    • Looking to level up your lawn care?

    This guide to must-have lawn tools contains your essentials to be the envy of the neighbourhood.

     

    Photo credit: Adobe Stock

    Health & Safety

    Asbestos, lead-based paints and copper chromium arsenic (CCA) treated timber are health hazards you need to look out for when renovating older homes. These substances can easily be disturbed when renovating and exposure to them can cause a range of life-threatening diseases and conditions including cancer. For information on the dangers of asbestos, lead-based paint and CCA treated timber and tips for dealing with these materials contact your local council's Environmental Health Officer or visit our Health & Safety page.

    When following our advice in our D.I.Y. videos, make sure you use all equipment, including PPE, safely by following the manufacturer’s instructions. Check that the equipment is suitable for the task and that PPE fits properly. If you are unsure, hire an expert to do the job or talk to a Bunnings Team Member.