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Lawn Mower Maintenance

A lawn mower is a significant investment, and like any other machine, it requires regular maintenance to ensure it works efficiently. Its maintenance involves a series of checks, cleanings, and adjustments to keep it in top shape. Neglecting maintenance can lead to various problems, including reduced cutting performance, increased fuel consumption, and even complete breakdowns. It is crucial to know the basics of maintenance, including the different types of maintenance and when to perform them, to keep it working optimally for years to come.



Checking the Tires


Checking the tires is an important part of that maintenance routine. By following a few simple steps, you can ensure your lawn mower's tires are in top condition:


Check the Tire Pressure


The first step is the tire pressure. Proper tire pressure is essential for ensuring the best performance of the machine. You can find the recommended tire pressure for your mower in the owner's manual or on the tire itself. Use a tire gauge to check the pressure and add air with an air compressor if it's too low. It is essential to ensure that the tire pressure is within the recommended range.


Inspect For Damage


Such as cracks, punctures, or other signs of wear and tear. Any damage to the tires can lead to decreased performance, uneven cutting, and unsafe operation. If you notice any damage to the tires, replace them immediately. A damaged tire can also lead to more significant problems, such as a bent rim or damaged wheel bearings, which can be more challenging and expensive to repair.


Check the Tread


Tread on the tires provides traction, maneuverability, and cutting performance. If the tread is too worn, it can affect performance. To check the tread depth, look at the tire's surface and determine if it's worn down, which can make the tire less effective.


Check the Wheel Alignment


Proper wheel alignment is essential for lawn mowing to operate smoothly and cutting the lawn evenly. A misaligned wheel can lead to uneven cutting and difficulty maneuvering the machine. To check the wheel alignment, check the steering of the mower to see if it pulls to one side, which can indicate a misaligned wheel.


Replacing The Air Filter


The air filter prevents dirt, dust, and other debris from entering the engine, which can cause damage or reduce the engine's performance. This reduction in airflow can cause the engine to work harder, reducing fuel efficiency and increasing emissions. It can lead to premature engine wear and tear, reducing the engine's life.


When to Replace Your Air Filter


It depends on various factors such as usage, environment, and the type of filter. However, replacing the air filter once a year or every 25 hours is recommended. If you use your lawn mower in a dusty or dirty environment, you may need to replace the air filter more frequently. You should also Check the owner's manual for the recommended replacement intervals specific to your lawn mower model.


How to Replace Your Air Filter


The first is to locate it. The housing is usually located near the engine's intake, and you can refer to your manual to find its exact location. The housing will typically be secured with screws or clips, which you will need to remove to access the filter.


Remove the old filter once you have located it. Ensure not to dislodge any debris trapped in the filter. If the filter is disposable, you can discard it. If the filter is reusable, you can clean it with a soft brush or compressed air.


Inspect the filter housing make sure no debris or dirt in the housing could interfere with the new filter. If there is any debris, use a soft brush or compressed air to clean it out. Once the housing is clean, you can install the new air filter. Make sure that the filter is the correct size. Test the engine and make sure it is running smoothly.


Sharpen and Balance Blades


Dull blades can result in an uneven cut, making the lawn look unsightly and potentially damaging the grass. When the blades are unbalanced, the mower will vibrate excessively, which can be not only uncomfortable but also harm the mower.


By sharpening the blades, you ensure they slice through the grass cleanly, resulting in a clean cut that does not damage the lawn. Balancing the blades reduces vibration, to ensure mower maintenance which protects the mower's engine and increases comfort for the operator.


How to Sharpen and Balance the Blades


You will need a socket wrench, a file or sharpening stone, and safety gloves. Ensure the mower's engine is off and the spark plug wire is disconnected to avoid accidental starts.


Remove the blade from the mower using the socket wrench to loosen the bolt holding the blade. Once removed, use the file or sharpening stone to sharpen the cutting edges of the blade, taking care to maintain the original angle of the blade. You can use a sharpening guide to ensure you maintain the correct angle.


To balance the blade, you will need a blade balancer, which sits on a level surface and allows you to check if the blade is even. If one side is heavier than the other, use a metal file to remove material from the heavier side until the blade is balanced.



Change Spark Plugs


When a spark plug is dirty, it may not ignite the fuel mixture properly, causing the engine to misfire or run rough. This decreases fuel efficiency and performance, making it harder to start the mower or keep it running smoothly.


How to Change the Spark Plugs


You will need a few tools: a spark plug socket, a spark plug gap gauge, and a new spark plug that matches the manufacturer's specifications. Once you have the tools, follow these steps.


Turn off the engine and disconnect the spark plug wire.

Remove the old one with a spark plug socket. Turn the socket counterclockwise until it is loose, then remove it by hand.

Check the spark plug gap with a spark plug gap gauge. The gap should match the manufacturer's specifications, usually found in the owner's manual or the engine's label.


If the gap is incorrect, adjust it using a gap tool. Gently bend the side electrode until the gap matches the manufacturer's specifications.

Insert the new spark plug and tighten it by hand, then use the socket to tighten it further. Do not over-tighten the spark plug.

Reconnect the spark plug wire to the spark plug.

Repeat this process for all the spark plugs on the lawn mower.


Change Oil


The oil lubricates the engine and keeps it running smoothly, but it can become dirty and contaminated over time, leading to decreased performance and engine damage.


By changing the oil, you replace the old, dirty oil with clean oil that provides optimal engine lubrication. This keeps the engine running smoothly, prolonging its life and increasing fuel efficiency.


How to Change the Oil


You will need a few tools: a drain pan, a funnel, a wrench or pliers, and new oil that matches the manufacturer's specifications. Once you have the tools, follow these steps:


Warm up the engine by running the mower for a few minutes. This will help the oil flow more easily and remove any debris that may have settled at the bottom of the oil reservoir.


Turn off the engine and locate the oil drain plug. It is usually located underneath the engine, near the base.

Place the drain pan under the drain plug and remove the plug using a wrench or pliers. Allow the old oil to drain into the pan.


Once the oil has drained, replace the drain plug and tighten it securely.

Remove the oil filler cap and use the funnel to add new oil to the engine. Refer to the owner's manual for the recommended amount and type of oil. Be sure to fill the engine appropriately.

Replace the oil filler cap and wipe up any spills or drips.

Start the engine and let it run for a few minutes to circulate the new oil.

Turn off the engine and check the oil level with the dipstick.


Fog the Engine


It is a process that helps to protect the engine during long periods of inactivity, such as over the winter months. Fogging is the process of coating the inside of the engine with a special spray that helps to prevent rust and corrosion. The spray creates a protective barrier that helps to keep the engine components lubricated and free from moisture, which can cause damage over time. It is particularly important when you winterize.


How to Fog the Engine


You will need a few tools: a fogging spray, a spark plug wrench, and a clean cloth. Once you have the tools, follow these steps:


Start the engine and let it run for a few minutes to warm up.


Turn off the engine and remove the spark plug using a spark plug wrench.


Spray fogging spray into the spark plug hole, taking care not to spray too much. Refer to the manufacturer's instructions for the recommended amount of spray.


Replace the spark plug and tighten it securely.


Use a clean cloth to wipe any excess spray off the outside of the engine.


Start the engine and let it run for a few minutes to circulate the fogging spray.


Turn off the engine and store the lawn mower in a dry area.


Keep the Mower Clean


Keeping your mower clean can help prevent debris from building up on the mower's underside, deck, and blades, leading to decreased performance and even damage to the machine. It can remove dirt, grass clippings, and other debris that cause problems. It can also help to remove moisture, which can help prevent rust and corrosion from forming.


How to Clean Your Mower


You will need a few tools: a hose, a bucket, a brush, and a cloth. Once you have the tools, follow these steps:


Turn off the mower and allow it to cool down.


Remove debris from the mower, including grass clippings, leaves, and dirt.


Use a hose to rinse off the top of the mower, being careful not to spray water into the engine.


Fill a bucket with soapy water and use a brush to scrub the underside of the mower, the blades, and the deck.


This will help to remove any built-up debris or grass clippings.


Rinse the mower with a hose to remove any remaining soap and debris.


Use a cloth to dry off any metal parts, such as the blades and deck, to prevent rust and corrosion from forming.


Apply a lubricant to any metal parts to help prevent rust and corrosion.


Inspect the Flywheel.


It helps to generate power and provide smooth and consistent operation. It is located near the top of the engine and is responsible for transferring the energy created by the engine's combustion to the mower's blades.


Dirt and debris can accumulate on the surface of the flywheel, which can cause it to become unbalanced or cause damage over time. To prevent this, it is important to clean the flywheel regularly. Use a clean, dry cloth to wipe down the flywheel's surface, removing any accumulated dirt or debris.


The keyway is a small groove on the flywheel that aligns it with the engine's crankshaft. It is important to check the keyway regularly for any signs of wear or damage. If you notice any wear or damage, replace the keyway immediately.


Winterizing Your Mower

By cleaning your mower, changing the oil and filter, removing the fuel, adding a fuel stabilizer, removing the battery, and storing your mower properly, you can ensure that it starts up and runs smoothly when you need it next spring. Winterizing helps in protection and ensures that your lawn mower lasts.



These are just a few tips to help you maintain your lawnmower and keep it running smoothly for many years.