How to Sharpen Lawn Mower Blades?

ToolsBrilliance is reader-supported. We may earn a commission through products purchased using links on this page. Learn more about our affiliate disclosure

A lawnmower is a machine that uses one or more revolving blades to cut grass to a uniform height. The most common source of power for lawnmowers is a compact internal combustion engine.

Lawnmowers also have a push handle or steering wheel to assist with propelling, moving, or turning the machine in numerous directions.

Lawnmowers are widely used across the world to keep grass lawns, fields, patches, and gardens looking good and growing at a consistent, appropriate height by trimming, cutting, or mowing them. To cut the grass at an even height, a lawnmower has one or more rotating or circular blades.

Lawnmowers are usually easy to manoeuvre due to the wheels or rollers attached to them.

The cut grass height may be set by the mower’s design, but it’s usually modified by the operator using a single master lever, nut, bolt, or lever on each of the machine’s wheels.

Advantages of Lawn Mower

  • If you’ve been cutting your grass with one type of mower, it’s time to switch to a different brand if you want a different look on your lawn. To put it another way, different types of mowers give your grass a varied look.
  • If you want to have beautiful yards in your home, make sure you have the correct lawnmower that will provide you with better cutting quality.
  • Another significant advantage of purchasing a lawnmower is that it can assist you in cutting down the entire lawn in your garden or yard in the smallest amount of time. As a result, if you want to complete your tasks as quickly as possible, this is the tool for you.

Disadvantages of Lawnmower

Lawnmowers have a few drawbacks, such as the fact that the price of comfortable cordless lawnmowers vary according to battery power. They are usually filthy and noisy, though some modern battery-powered variants are whisper quiet and emit no pollution.

Types of Lawn Mower

  • Cylinder Lawn Mower: Front-mounted cylinder blades on cylinder lawnmowers rotate vertically. They are ideal for flat lawns that need to be maintained short and clean, and they are available in electric, gasoline, and push varieties.
  • Hover Lawn Mower: Hover lawnmowers float above the ground, making them easier to use and more capable of mowing rough terrain. They’re a wonderful solution for lawns with unusual shapes and are less costly than other types.
  • Rotatory Lawn Mower: Rotary lawn mowers are the most versatile, as they can handle a wide variety of grass types. They outperform cylinder mowers in terms of cutting longer and rougher grass. A rotary mower can be powered by alternating current, a rechargeable battery, or a gasoline engine.
  • Petrol Lawn Mower: Petrol-powered lawn mowers are the best solution for large areas where a mains connection would be prohibitive. They are a little more expensive, but they are far more powerful and faster at cutting. They’re also more manoeuvrable around larger things.
  • Push Lawn Mower: They’re ideal for small gardens because they don’t require energy and emit no noise or pollutants.
  • Electric Lawn Mower: Most lawnmowers are run by electricity. This is an excellent solution for small to medium-sized gardens. They are less expensive, more compact, and easier to store.
  • Cordless Lawn Mower: The convenience of cordless battery-powered lawn mowers is unrivalled. They provide all of the benefits of an electric mower without the cable. They are lighter and last much longer than normal nickel-cadmium batteries, but they are also more expensive.

How to Sharpen Lawn Mower Blades?


Secure your lawnmower blade with a vice or a solid clamp in a way and location that allows you to work on it easily. For example, you might want to secure it so that the blade protrudes over the edge of your workbench at around waist level, allowing you to work on it while seated.


File the cutting edge of the blade with a metal file. Stroke the blade from the inside edge to the outside edge until a clean, gleaming edge is evident. Repeat on the opposing edge of the blade.


As you sharpen the blade, keep the file at the angle of the bevel. The blade angle is usually around 40 or 45 degrees, although this is not always the case, therefore verify the manufacturer’s instructions for the precise angle.


Spray some WD-40 (or a similar lubricant/sealant) on the main bolt to prevent rusting, and then replace the blade, followed by any washers, and finally the bolt. Tighten the bolt if necessary.

How to maintain Sharpen Blades?

  • Sharpening your lawnmower blades regularly is a good habit to develop. Sharpening a lawnmower’s blades roughly twice every mowing season is normally reasonable with frequent use — more if you use it frequently.
  • If the lawnmower’s blade isn’t properly balanced, it might cause the mower to vibrate while it spins and perhaps harms its internal components. Since it is easier to balance the blade when it’s removed for sharpening, you should do it after each sharpening.
  • While sharpening your blade after regular wear and tear is a fantastic method to return it to its original state, some blades are beyond repair. Sharpening will not be able to repair a bent, deeply worn, dented, or fractured blade. In these situations, replacement is usually the quickest and simplest alternative.
  • Don’t risk damaging your blades or hurting yourself if any part of the sharpening or balancing procedure looks difficult, risky, or above your level of maintenance competence. Rather, seek the assistance of a lawnmower repair specialist. Almost any lawnmower mechanic should be able to sharpen and balance a set of blades in a timely and cost-effective manner.


A lawnmower is a machine that uses one or more revolving blades to cut grass to a uniform height. To learn how to sharpen lawnmower blades, simply follow the procedures listed above.

Read: How to Sharpen a Hedge Trimmer?


Can a lawnmower blade be sharpened without removing it?

Sharpening lawnmower blades can be accomplished with a bench grinder, manual file, rotary tool, or angle grinder, among other tools. Depending on the configuration of your mower, you may be able to sharpen the blade without removing it, which will save you time.

Is it necessary to have a razor-sharp lawnmower blade?

Mower blades should be razor-sharp, but not razor-aggressive. You should be able to bring your hand close to the blade without getting cut.

We will be happy to hear your thoughts

Leave a reply

Tools Brilliance
Enable registration in settings - general