19/09/2012
Keeping your lawn mower clean is crucial for its performance, longevity, and safety. A well-maintained mower not only cuts your grass more effectively but also reduces the risk of breakdowns and costly repairs. Over time, grass clippings, dirt, and debris can accumulate on various parts of the mower, hindering its operation and potentially causing damage. This guide will walk you through the essential steps to thoroughly clean your lawn mower, ensuring it runs smoothly for seasons to come.
Why Cleaning Your Lawn Mower is Important
Several compelling reasons highlight the importance of regular lawn mower cleaning. Firstly, efficiency. A mower caked in grass clippings will struggle to discharge them effectively, leading to an uneven cut and potential clogging of the deck. Secondly, preventing rust and corrosion. Moisture trapped under debris can accelerate the rusting process, weakening metal components and compromising the mower's structural integrity. Thirdly, engine health. For petrol-powered mowers, keeping the engine area clean prevents overheating and ensures optimal airflow, which is vital for combustion and cooling. Fourthly, safety. Loose debris can become projectiles, and a clean mower is easier to inspect for any potential hazards or worn parts. Finally, longevity. Regular cleaning and maintenance are the cornerstones of extending the lifespan of any piece of machinery, and your lawn mower is no exception.
Safety First!
Before you begin cleaning, it’s paramount to prioritise safety. Always ensure the mower is completely cool and the engine is switched off. For petrol mowers, disconnect the spark plug wire to prevent accidental starting. If you have a ride-on mower, engage the parking brake. Wear sturdy gloves to protect your hands from sharp blades and abrasive debris, and consider wearing safety glasses to shield your eyes from flying particles.
Tools and Supplies You'll Need
Gathering the right tools and supplies beforehand will make the cleaning process much smoother. Here’s a typical list: * Stiff Brush or Wire Brush: For dislodging stubborn, dried-on grass and mud. * Garden Hose or Pressure Washer (low setting): For rinsing away loosened debris. * Bucket: For soapy water or cleaning solutions. * Mild Detergent or Car Wash Soap: A gentle yet effective cleaner. * Old Rags or Microfibre Cloths: For wiping and drying. * Screwdriver or Pliers: For removing certain components like the grass bag or mulch plug. * Degreaser (optional): For tough grease and oil stains, especially on the engine. * Blade Sharpener and File (for blade maintenance): While not strictly cleaning, it’s often done at the same time. * Tarp or Old Newspaper: To protect the ground from dirt and cleaning fluids.
Step-by-Step Cleaning Process
Let's break down the cleaning process into manageable steps:
1. Cleaning the Underside (Deck)
This is where the majority of grass and dirt accumulates. * Tilt the Mower: For most walk-behind mowers, tilt the mower so the spark plug faces upwards (to prevent oil or fuel from entering the engine cylinder). For some models, tilting it back onto its handles is sufficient. Consult your owner's manual if unsure. * Scrape Away Debris: Use a stiff brush or a putty knife to scrape off as much caked-on grass and mud as possible. Pay close attention to the areas around the blade and the discharge chute. * Rinse: Use a garden hose to rinse away the loosened debris. A pressure washer on a low setting can be effective, but be careful not to blast water directly into engine components or bearings. * Stubborn Buildup: For very stubborn residue, a degreaser or a solution of warm, soapy water can help. Let it sit for a few minutes before scrubbing and rinsing.
2. Cleaning the Cutting Blade
While cleaning the underside, it's a good opportunity to inspect and clean the cutting blade. * Safety First: Ensure the spark plug is disconnected (petrol mowers) or the battery is removed (electric mowers). * Remove the Blade: Use a wrench to carefully remove the blade. Note the orientation of the blade – it needs to be reinstalled correctly. * Clean the Blade: Use a wire brush to remove any grass and dirt. If there are nicks or dullness, you might consider sharpening it at this stage. A blade balancing kit can also be beneficial. * Reinstall: Reattach the blade securely, ensuring it’s in the correct orientation for cutting. Over-tightening can damage the spindle.
3. Cleaning the Grass Catcher or Mulch Plug
If your mower has a grass catcher, it will likely be filled with damp clippings, which can become mouldy. * Empty Thoroughly: Empty the catcher completely. * Wash: Wash the catcher with warm, soapy water and a brush. Rinse it thoroughly and allow it to air dry completely before reattaching. This prevents mould and mildew. * Mulch Plug: If you use a mulch plug, brush off any accumulated grass clippings.
4. Cleaning the Exterior and Engine Area
Keep the rest of the mower clean to prevent rust and maintain its appearance. * Wipe Down: Use a damp cloth with mild soapy water to wipe down the mower's body, handle, and wheels. * Engine (Petrol Mowers): Gently brush away loose debris from the engine fins and around the air filter. Avoid spraying water directly onto the engine, especially near electrical components. A dry brush or compressed air is often best for engine cleaning. If you need to use a degreaser, apply it sparingly to specific areas and wipe clean with a rag. * Wheels: Clean the wheels to remove dirt and grass, which can affect their rolling ability.
5. Cleaning the Air Filter (Petrol Mowers)
A clean air filter is vital for engine performance. * Locate and Remove: Consult your owner's manual to find the air filter housing. Carefully remove the filter. * Paper Filters: If it's a paper filter, you can often tap it gently against a hard surface to dislodge dirt. If it's very dirty, it's best to replace it. * Foam Filters: Foam filters can usually be washed with warm, soapy water. Rinse them thoroughly and allow them to dry completely. Once dry, lightly re-oil the foam filter with a specific air filter oil (follow manufacturer instructions).
6. Cleaning the Fuel Tank and Cap (Petrol Mowers)
Ensure the fuel cap is clean to prevent dirt from entering the fuel tank. * Wipe Down: Wipe the fuel cap and the area around the filler neck with a clean, damp cloth.
7. Drying and Reassembly
After cleaning, it’s essential to dry all parts thoroughly. * Wipe Dry: Use clean rags or microfibre cloths to dry all accessible surfaces. * Air Dry: Allow any components that were washed (like the grass catcher) to air dry completely before reassembly. * Reassemble: Once everything is dry, reassemble any parts you removed, ensuring they are securely fastened.
Post-Cleaning Maintenance
Once your mower is sparkling clean, consider these additional maintenance steps: * Lubrication: Apply a light coat of lubricant to pivot points, cables, and wheels to ensure smooth operation and prevent rust. * Blade Sharpening: As mentioned, a sharp blade is crucial for a clean cut and reduces strain on the engine. Consider sharpening or replacing dull blades. * Check Oil (Petrol Mowers): Before starting, check the engine oil level and top up if necessary. This is also a good time to change the oil if it's due, as discussed in the user comments.
User Comment Insights: Oil Changes and Cleaning
The user comments highlight an interesting point about oil changes and cleaning. One user suggests that for a recently run engine, 90%+ of particulates will be in suspension, which detergent oil is designed to handle. This implies that running the engine briefly before draining the oil can help flush out more contaminants. However, another user counters this by suggesting that if the mower has been sitting all winter, it might be better to drain the oil immediately rather than running it on potentially compromised oil and spreading sludge around the engine. This approach aims to save wear and tear on the motor by removing the sludge before it circulates. Key Takeaway: If your mower has been stored for a long period, especially over winter, draining the oil while it's cold and the sludge is settled at the bottom is a sensible approach. If you use the mower regularly, running it briefly to warm the oil and suspend contaminants before an oil change can be beneficial. Always refer to your owner's manual for specific oil change intervals and procedures.
Frequently Asked Questions
Q1: How often should I clean my lawn mower?A1: It's recommended to give your mower a general clean after each use, especially if you've been mowing wet grass. A more thorough clean and inspection should be done at least once a month, or more frequently if you use it heavily. A deep clean and seasonal maintenance are best done at the beginning and end of the mowing season. Q2: Can I use a pressure washer to clean my lawn mower?A2: Yes, but with caution. Use a low-pressure setting and avoid directing the spray directly at the engine, electrical components, bearings, or seals. High pressure can force water into these areas, causing damage. A garden hose is often a safer alternative for most cleaning tasks. Q3: What's the best way to remove caked-on grass from the deck?A3: Start by scraping with a putty knife or stiff brush. For stubborn residue, warm, soapy water or a mild degreaser can help. Letting it soak for a few minutes before scrubbing can also be effective. Q4: Should I clean the blade every time?A4: It's good practice to wipe down the blade after each use to remove excess grass. A more thorough cleaning, inspection, and sharpening are recommended periodically, perhaps once a month or before storing the mower for an extended period. Q5: Is it okay to store a wet lawn mower?A5: No, it's not advisable. Moisture trapped on the mower's surfaces can lead to rust and corrosion. Always ensure your mower is thoroughly dry before storing it, especially for long-term storage. Leaving it to air dry in the sun after washing is a good method. By following these steps, you can ensure your lawn mower remains in excellent working order, making your mowing tasks easier and more efficient, while also extending its operational life. A clean mower is a happy mower!
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