How to Prep Your Lawn Mower for the Off-Season in Lismore

Diamond Service Centre • July 30, 2025

When the mowing season winds down and the grass growth slows, it might be tempting to simply park your lawn mower in the shed and forget about it until next year. However, this approach can lead to headaches when spring arrives. Without proper off-season preparation, your mower could face various issues, from clogged fuel lines to rusted blades, potentially leaving you with costly repairs. With a little attention now, you can ensure your mower is ready to go when the next mowing season begins.


Here’s a comprehensive guide for homeowners and property managers in Lismore on how to prepare your lawn mower for the off-season.

The Importance of Off-Season Maintenance for Your Lawn Mower


Off-season maintenance plays a vital role in extending the life of your mower and avoiding unexpected problems. Many mechanical issues start when equipment sits unused for months, allowing moisture, stale fuel, and worn parts to deteriorate even further.


By performing maintenance before storage, you can:


  • Prevent rust and corrosion on key components.
  • Avoid fuel system blockages caused by stale petrol.
  • Ensure smooth engine starts when mowing season returns.
  • Reduce the likelihood of costly breakdowns.
  • Extend the overall life of your mower.


Cleaning Your Mower: The First Step to Longevity


Thorough cleaning is one of the most important tasks before storing your mower. Dirt, grass clippings, and moisture trapped under the deck can accelerate rust and damage critical parts if left unaddressed.


To clean your mower properly:


  • Disconnect the spark plug for safety before cleaning or doing maintenance work.
  • Use a plastic scraper or brush to remove compacted grass and debris from the deck underside.
  • Use a damp cloth and mild detergent to wipe down the entire machine, including the engine housing and wheels.
  • Clean air vents and cooling fins to prevent blockages that can lead to overheating.
  • Remove and clean the grass catcher thoroughly before storing.


Many mower service centres offer professional cleaning as part of their maintenance packages, ensuring every part of your machine is properly cleaned and ready for storage.


Inspecting & Sharpening the Blades


The mower’s blades endure the most stress during mowing season. Blades that are dull or damaged don’t cut grass cleanly, leading to an uneven lawn and placing additional strain on the engine.


During the inspection, check for:


  • Visible nicks, chips, or warping along the blade edges.
  • Signs of imbalance that could cause vibrations and damage internal engine components.
  • Excessive wear may warrant blade replacement rather than sharpening.


Benefits of professionally sharpened & balanced blades include:


  • Clean, even cuts that promote healthy grass growth.
  • Reduced strain on the engine.
  • Safer operation during use.


Draining or Stabilising the Fuel Tank


Petrol left in the tank over several months can break down, leading to varnish-like deposits that clog carburettors and fuel lines. This is one of the most common reasons mowers refuse to start after long storage periods.


To protect the fuel system:


  • Drain the fuel tank completely and run the engine until it stops to ensure all fuel is used.
  • Alternatively, add a fuel stabiliser to store the mower for a shorter off-season period.
  • Avoid leaving untreated fuel in the system to prevent costly fuel line repairs.


Technicians specialising in lawn mower repairs can assist with proper fuel system preparation, minimising blockage risk and ensuring reliability starting next season.


Checking & Changing the Oil


Oil protects your mower’s engine by lubricating internal parts and reducing wear. However, oil can accumulate dirt, metal shavings, and moisture over time, becoming corrosive if left in the engine during storage.


For proper oil maintenance:


  • Completely drain the old oil and refill with the manufacturer-recommended type.
  • Check for any metal particles or discolouration in the old oil, which may indicate wear.
  • Replace the oil filter if applicable.


Professional servicing ensures that the oil is changed correctly and any potential engine issues are identified before they worsen, providing peace of mind throughout the off-season.


Inspecting Belts, Filters & Cables for Wear


Belts, filters, and cables can deteriorate over time and may go unnoticed until a sudden failure occurs. The off-season is the ideal time to inspect these components and replace any that show signs of wear.


Key inspection points include:


  • Cracked or stretched belts that may slip or snap during operation.
  • Frayed or corroded throttle, drive, or brake cables that could compromise control.
  • Dirty or clogged air and fuel filters restrict engine performance.


Storing Your Mower Properly to Avoid Moisture Damage


Storage conditions are just as important as maintenance. If not properly managed, moisture, pests, and fluctuating temperatures can all contribute to mower deterioration.


For safe and effective storage:


  • Keep the mower dry, sheltered, and away from rain and humidity.
  • Elevate the mower slightly to prevent contact with cold concrete, which can encourage moisture buildup.
  • Use a breathable cover to protect against dust while allowing airflow to prevent condensation.
  • Remove the battery (if applicable) and store it separately in a dry, cool place.


If you’re unsure how to store your mower long-term, lawn mower repair experts in Lismore can offer advice based on your storage space.


Scheduling Professional Lawn Mower Servicing


While basic maintenance can be done at home, a professional service offers a complete inspection and tune-up that’s difficult to achieve without specialised tools and experience.


Benefits of professional off-season servicing include:


  • Full engine inspections to detect minor issues early.
  • Carburettor cleaning to ensure optimal fuel delivery.
  • Blade sharpening and balancing for superior cutting results.
  • Replacement of worn belts, filters, and spark plugs.
  • Lubrication of moving parts to prevent premature wear.


By booking your off-season service, you can be sure your mower will be ready to use when the grass starts growing again.


Reliable Lawn Mower Repairs in Lismore — Contact Us Now


At Diamond Service Centre, we understand the importance of keeping your mower performing reliably year after year. Our qualified technicians offer complete lawn mower repairs and maintenance services tailored for homeowners and property managers in Lismore. From pre-storage maintenance to comprehensive servicing, we’re here to ensure your equipment stays in top condition. Contact us today to book your Lismore mowers service and enjoy hassle-free mowing next season.

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