- Why sharp lawn mower blades matter<\/a><\/li>
- Safety precautions for blade sharpening<\/a><\/li>
- Tools you\u2019ll need<\/a><\/li>
- Steps to sharpen your mower blades<\/a><\/li>
- How often to sharpen your mower blades<\/a><\/li>
- When to replace rather than sharpen<\/a><\/li>
- When to call a professional<\/a><\/li>
- FAQ about lawn mower blades<\/a><\/li>
- Find a lawn care expert near you<\/a><\/li><\/ul> \t\t\t<\/div> \t\t<\/div><\/div>
Why sharp lawn mower blades matter<\/span><\/h2>
![\"illustration](\"https:\/\/lawnlove.com\/blog\/wp-content\/uploads\/2021\/10\/rsz_1lawnlove-does-my-blade-need-sharpening-illustration.png\")
Infographic by Juan Rodriguez<\/figcaption><\/figure> According to the Virginia Cooperative Extension, \u201cThe quickest way to improve lawn quality is to mow with a sharp blade.\u201d Dull blades don\u2019t just make mowing<\/a> harder, they can harm your grass. Here\u2019s why keeping them sharp is worth it:<\/p>
- Clean cuts:<\/strong> A sharp blade slices grass evenly.<\/li>
- Green and healthy lawn:<\/strong> Torn grass blades turn brown at the edges, making your lawn look dry and patchy<\/a>.<\/li>
- Fewer diseases:<\/strong> Torn grass is more vulnerable to diseases and fungus<\/a>.<\/li>
- Improve lawn mower efficiency:<\/strong> A dull blade forces the mower to work harder. A sharp blade helps it run more efficiently, saving energy and reducing engine wear.<\/li> <\/ul>
Want to learn more about keeping your lawn mower in tip-top shape? Read our complete guide: Best Lawn Mower Maintenance Practices<\/a><\/p>
Safety precautions for blade sharpening<\/span><\/h2>
Safety is paramount when sharpening mower blades. While not razor-sharp, these blades can still cause serious injury if mishandled. Always disable your mower before beginning:<\/p>
- Unplug electric mowers<\/li>
- Remove batteries from cordless models<\/li>
- Disconnect spark plugs on gas mowers<\/li> <\/ul>
Once powered down, wear thick work gloves to handle blades safely<\/a>. Don’t forget eye protection during sharpening \u2014 flying metal shavings can cause eye injuries. Secure the blade in a vise when possible for stability during sharpening, and maintain the original angle (typically 30 to 35 degrees) for optimal cutting performance.<\/p>
Tools you\u2019ll need<\/span><\/h2>
- Lawnmower<\/li>
- Socket set<\/li>
- Wire brush<\/li>
- Work gloves<\/li>
- Marker<\/li>
- Eye protection<\/li>
- WD-40 lubricant<\/li>
- Hand file<\/li>
- Bench grinder<\/li>
- Angle grinder<\/li>
- Sharpening attachment for drill <\/li>
- Vise <\/li> <\/ul>
Steps to sharpen your mower blades<\/span><\/h2>
![\"Lawnmower](\"https:\/\/lawnlove.com\/blog\/wp-content\/uploads\/2019\/03\/AdobeStock_807338306-2.jpeg\")
Benjamin Clapp<\/a> | Adobe Stock<\/figcaption><\/figure> Sharpening lawn mower blades isn\u2019t complicated, but doing it correctly makes all the difference. The good news is that there are several tools available for the task. A hand file<\/a> is straightforward, but it requires some effort. A bench grinder<\/a> operates quickly but demands a steady hand. An angle grinder<\/a> is easier to handle compared to a bench grinder. Additionally, you can use a sharpening attachment<\/a> on a power drill, which is a beginner-friendly option for sharpening mower blades. <\/p>
No matter which method you choose, the trick is to sharpen the blade evenly and at the right angle. I\u2019ll guide you through removing the blade to sharpening and reinstalling it, so you can get back to mowing<\/a> with a blade that cuts like new. <\/p>
Step 1: Remove the blade<\/span><\/h3>
The first step is to remove the blade and how you do this depends on the type of mower<\/a> you have. If you\u2019re using an electric push mower, you can simply turn it upside down to access the blade. For gas-powered push mowers, you\u2019ll need to tilt it onto its side and make sure the carburetor and air filter are facing up to prevent fuel or oil from leaking.<\/p>
Once the mower is positioned correctly, grab a socket wrench and loosen the bolts or nuts securing the blade. You have to turn them anticlockwise to loosen them. If they\u2019re stuck, a little WD-40 lubricant can help loosen things up.<\/p>
Before fully removing the blade, mark the side that faces the lawn with a marker and note the arrangement of washers and spacers. This will prevent you from reinstalling it the wrong way later. <\/p>
My tip:<\/strong> For riding mowers, access the blade either by using a mower lift, removing deck plates, or lowering the entire cutting deck. Secure the blade with a wooden block to prevent rotation, then loosen the center bolt with a socket wrench. <\/p>
Read more:<\/strong> Electric vs. Gas Lawn Mowers<\/a><\/p>
Step 2: Clean the blade<\/span><\/h3>
Over time, grass, dirt, and rust build up, making it harder to sharpen the blade. I use a wire brush to scrub the grime, and if dirt is stubborn, I like to use a little WD-40 to help loosen it up.<\/p>
While you\u2019re cleaning, take a closer look at the blade\u2019s condition. Small nicks and notches along the edge are normal, but if you see cracks or larger chunks missing, it\u2019s time for a replacement. <\/p>
Read more: <\/strong>Why Should You Change Your Mowing Direction?<\/a><\/p>
Step 3: Blade sharpening techniques <\/span><\/h3>
How you sharpen your mower blade depends on the tools you\u2019re using, and that choice depends on your experience and budget. Here\u2019s a list of the sharpening tools you can use:<\/p>
Hand file <\/span><\/h4>
- Skill level:<\/strong> Beginner<\/li>
- Estimated cost:<\/strong> $5 to $10<\/li> <\/ul>
Using a hand file is the simplest and cheapest way to sharpen a mower blade, and it\u2019s what I started with when I first learned how to do this. It takes a little effort, but it gives you full control over the process.<\/p>
- First, secure the blade in a vise to keep it steady. <\/li>
- Once locked in place, I grab a metal file and start working along the cutting edge. <\/li>
- Follow the natural curve of the blade and keep the angle at 30 degrees. I always file in one direction, using smooth, controlled strokes. <\/li>
- It takes around 50 strokes to get a sharp edge. <\/li> <\/ol>
Drill blade sharpener attachment<\/span><\/h4>
- Skill level: <\/strong>Beginner<\/li>
- Estimated cost:<\/strong> As low as $2 if you already have the drill. The cost of a drill ranges between $30 to $50.<\/li> <\/ul>
If you want to make sharpening easier, a drill blade sharpener attachment is a great option. I started using one after getting tired of the time and effort a hand file takes. <\/p>
- First, secure the blade in a vise. <\/li>
- Next, attach the sharpener to the power drill and line up the grinding stone with the blade\u2019s edge. This tool has a built-in guide, so it keeps the correct 30-degree angle. <\/li>
- Run the drill along the edge in smooth, even passes.<\/li>
- It only takes a few passes on each side before the blade is sharp again. <\/li> <\/ol>
Bench grinder<\/span><\/h4>
- Skill level:<\/strong> Advanced<\/li>
- Estimated cost:<\/strong> $47 to $133<\/li> <\/ul>
A bench grinder is the fastest and best way to sharpen lawn mower blades, but it also requires a steady hand and some experience. I\u2019ve used one before, and while it gets the job done quickly, it\u2019s easy to remove too much metal if you\u2019re not careful. <\/p>
- First, remember to put on safety glasses and work gloves, grinders throw off sparks and tiny metal bits. <\/li>
- Next, hold the blade firmly with both hands and gently press the cutting edge against the grinding wheel. <\/li>
- Apply light pressure, if you push too hard, you\u2019ll wear down the blade unevenly or overheat the metal. <\/li>
- Make quick, smooth passes, keeping the blade moving to maintain the 30-degree angle. It takes a few passes to get a sharp edge but it\u2019s easy to overdo it. <\/li> <\/ol>
My tip: <\/strong>This method is best for those with experience. If you\u2019re not confident using a bench grinder, it might be safer to call a lawn care professional<\/a> to mow your lawn and sharpen the blades for you.<\/p>
Angle grinder with a flap disc<\/span><\/h4>
- Skill level:<\/strong> Advanced<\/li>
- Estimated cost: <\/strong>A flap disc can cost $5 while an angle grinder can cost between $30 and $86<\/li> <\/ul>
An angle grinder with a flap disc is faster than a hand file and easier to control than a bench grinder. The flap disc removes metal smoothly without grinding too aggressively.<\/p>
- First, I put on safety glasses and gloves.<\/li>
- Next, I secure the blade in a vise. <\/li>
- Hold the angle driver with both hands and position the flap disc against the cutting edge at 30 degrees. <\/li>
- Don\u2019t press down hard but make controlled light passes along the edge, always in the same direction. <\/li> <\/ol>
Step 4: Balance the blade<\/span><\/h3>
When I first started sharpening my mower blade, I used to skip this step. That was a big mistake. An unbalanced blade can make your mower vibrate like crazy and wear down the engine. Luckily, checking the balance is easy.<\/p>
Some people use a plastic blade balancer, but I just go with the simple trick of hammering a nail into the wall and hanging the blade on it. If the blade sits level, it\u2019s perfect. If it leans to one side, that means you need to fix it. Remove a little more material from the heavier side, using the same sharpening method as before. <\/p>
Read more: <\/strong>Lawn Mowing Tips – How to Mow Your Lawn<\/a><\/p>
Step 5: Reinstall the blade <\/span><\/h3>
Now that the blade is sharp and balanced, it\u2019s time to put it back on the mower. Before I do that, I like to take a minute to clean off any extra debris from the underside of the mower using a brush. You can also rinse it off with a garden hose.<\/p>
Next, I take the blade and check the mark I made earlier to make sure I\u2019m installing it the right way. Once it\u2019s positioned correctly, I use a socket wrench to tighten the nuts. With the blade in place, the final step is to reconnect the spark plug wire or battery for cordless mowers. <\/p>
Read more: <\/strong>What is the One-Third Rule of Mowing?<\/a><\/p>
How often to sharpen your mower blades<\/span><\/h2>
In general, you need to sharpen your lawn mower blades after 25 hours<\/strong> of mowing \u2014 about 1 to 2 times a year<\/strong> \u2014 or anytime you accidentally run over a rock or other debris. <\/p>
Besides that rule of thumb, it\u2019s wise to inspect your lawn after each mow. I always examine the tips of the grass blades closely. If they\u2019re cleanly cut, I know my mower blades remain sharp. But if they\u2019re ragged and torn, it\u2019s time to sharpen them.<\/p>
Read our complete guide: <\/strong>How Often Should You Sharpen Mower Blades?<\/a><\/p>
When to replace rather than sharpen<\/span><\/h2>
![\"holding](\"https:\/\/lawnlove.com\/blog\/wp-content\/uploads\/2019\/03\/AdobeStock_438069688-2.jpeg\")
Itthiphon<\/a> | Adobe Stock Free | License<\/a><\/figcaption><\/figure> Most blades need replacing after 3 to 5 seasons<\/strong> of regular use. When your mower blade has deep nicks, cracks, or severe bends, sharpening won’t restore proper cutting. <\/p>
Excessive metal loss from repeated sharpenings (when the blade appears visibly thinner) also signals replacement time. Check the blade thickness regularly \u2014 if it’s worn by 1\/2 inch or more from its original width, replacement is safer than continued sharpening. <\/p>
In addition, I suggest replacing them if you notice uneven cutting patterns that persist after sharpening or if the blade wobbles when spinning.<\/p>
Are you in the market for a new lawn mower? Check out our guides:<\/strong><\/p>
- 10 Best Lawn Mowers of 2025<\/a><\/li>
- 9 Best Lawn Mowers for Big Yards of 2025<\/a><\/li>
- 10 Best Lawn Mowers for Small Yards of 2025<\/a><\/li>
- 9 Best Gas Lawn Mowers of 2025<\/a><\/li> <\/ul>
When to call a professional<\/span><\/h2>
Sharpening mower blades is not for everyone. If you don\u2019t have the tools, don\u2019t feel comfortable working with sharp metal, or simply just don\u2019t want to do this job, Lawn Love an connect you with a local lawn care professional<\/a>.<\/p>
Depending on the type of mower you have, lawn mower services<\/a> average between $10 and $275<\/strong>. These services don\u2019t just include blade sharpening, a professional will also replace spark plugs, clean your air filter, change your mower\u2019s oil, clean the mower deck, and more.<\/p>
FAQ about lawn mower blades<\/span><\/h2>
How do I keep blades from becoming dull so quickly?<\/strong>To keep your mower blade from dulling fast, avoid mowing over rocks and sticks. Never mow wet grass<\/a> and clean the underside of your mower after each use to prevent grass buildup and rust.\u00a0<\/p> <\/div>
Is it possible to fix bent blades?<\/strong>Yes, it\u2019s possible with the appropriate tools but it\u2019s not recommended. Bending the metal back weakens it, making the blade more likely to crack or break while mowing. For safety reasons, it\u2019s better to replace your mower blade.\u00a0
Can I sharpen lawn mower blades without taking them off?<\/strong>It\u2019s not recommended to sharpen lawn mower blades without taking them off because you won\u2019t be able to maintain the correct angle or balance the blade afterward. This can lead to uneven sharpening, increased vibration, and damage to your mower.\u00a0<\/p> <\/div> <\/div>
Find a lawn care expert near you<\/span><\/h2>
Lawn Love simplifies yard care by instantly connecting you with skilled local professionals. Book an expert for mowing<\/a>, fertilization<\/a>, and weed control<\/a> through our user-friendly platform. Skip the DIY hassle and enjoy a beautiful lawn without the work \u2014 all at competitive rates and just clicks away.<\/p>
\t\t\t\t\t\tSources<\/strong>:<\/p> \t\t\t
<\/span><\/div> \t\t<\/div> \t\t\t- Virginia Cooperative Extension<\/a><\/li> <\/ul> <\/div> \t\t<\/div> <\/div>
Main Photo Credit: Andrii<\/a> | Adobe Stock Free | License<\/a><\/p>","protected":false},"excerpt":{"rendered":"
Sharpening a lawn mower blade involves removing, sharpening, balancing, and reinstalling the blade. Follow our step-by-step guide to do it right.<\/p>\n","protected":false},"author":94,"featured_media":36718,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_et_pb_use_builder":"off","_et_pb_old_content":"\n
Is your lawn looking ragged and bland instead of healthy and lush? It may have lost its luster as a result of cutting your grass with dull mower blades. You can help bring your lawn back to life by learning how to sharpen your lawn mower blades. The purpose of this guide is to provide you with step-by-step instructions on how to sharpen a mower blade and let you in on some helpful tips, but before we do, let\u2019s look at why sharpening your mower blades is so important.
<\/p>\n\n\n\n\"Sharp lawn mower blades create a cleaner cut, which improves the health of your lawn. Learning how to sharpen a mower blade is an integral part of maintaining a healthy lawn.\"<\/p><\/blockquote>\n\n\n\n
Why Are Sharp Mower Blades Important?
<\/h2>\n\n\n\nCutting your grass with a dull mower blade is sort of like having split ends in your hair. It inhibits healthy and vibrant growth. When you cut your grass with dull mower blades, it tears the blades of grass rather than cutting them. Not only does this contributes to the ragged appearance of your lawn, but it leaves your grass susceptible to diseases. With sharp mower blades, you get a clean cut, which allows your lawn to stay healthy and retain its vibrant luster.
<\/p>\n\n\n\nStep-by-S
tep<\/g> Guide to On How to Sharpen Lawn Mower Blades
<\/h2>\n\n\n\nSharpening a lawn mower blade is not as difficult as you might think. Once you learn the best way to sharpen mower blades, you won\u2019t hesitate to repeat the process two to three times per season. You will soon find that your mower operates better and your lawn remains healthier. There are four main steps involved in the process.
<\/p>\n\n\n\nStep One: Preparing to Sharpen the Blade<\/strong>
<\/h2>\n\n\n\nPreparing to sharpen your lawn mower blade is an essential part of the process. If not done correctly, there is a potential for disastrous results. Follow these steps carefully to produce the best results:
<\/p>\n\n\n\nAssemble the Following Tools and Equipment:<\/strong><\/p>\n\n\n\n
\u2022 Safety goggles or safety glasses. <\/p>\n\n\n\n
\u2022 Gloves. <\/p>\n\n\n\n
\u2022 2x4 wood block 16\u201d to 20\u201d long. <\/p>\n\n\n\n
\u2022 4x4 wood block and boards of various thicknesses 12\u201d to 18\u201d long (optional). <\/p>\n\n\n\n
\u2022 Paint stick, permanent marker or spray paint. <\/p>\n\n\n\n
\u2022 Breaking bar with a socket. <\/p>\n\n\n\n
\u2022 Penetrating oil (optional). <\/p>\n\n\n\n
\u2022 Wire brush and\/or steel wool. <\/p>\n\n\n\n
\u2022 File or grinder.
<\/p>\n\n\n\nUsing safety equipment is an essential element. Wear safety goggles or safety glasses and gloves before and during all the steps.
<\/p>\n\n\n\n<\/figure>\n\n\n\n Disconnect All Sources of Power.<\/strong><\/p>\n\n\n\n
Be sure to disconnect all potential power sources before you begin work on your mower. If your mower is electric powered, be certain that it is unplugged. If your mower is gasoline powered, your best bet is to disconnect the cable from the spark plug. Failure to follow these steps creates the potential hazard that the machine could suddenly start or turn over while the blades are exposed.
<\/p>\n\n\n\nTurn the Mower on Its Side.<\/strong><\/p>\n\n\n\n
To get at the mower blade, you need to turn the mower on its side. Either side is fine if your mower is electric powered, but a gas mower should be turned so that the carburetor is facing up. By turning the carburetor up, you prevent fuel from flooding the carburetor, which causes issues when you get ready to start your mower. Placing a block under the motor or engine housing helps to stabilize the mower while you work, you may need more boards of various thicknesses for greater stability.
<\/p>\n\n\n\nStep Two: Removing the Blade<\/strong>
<\/h2>\n\n\n\nRemoving the blade requires a bit of torque and a lot of caution to prevent injury. To safely remove the blade, follow these steps:
<\/p>\n\n\n\nMark the bottom side of the blade.<\/strong><\/p>\n\n\n\n
A major mistake many people make when removing lawn mower blades to sharpen them is installing them upside down when they put them back on. A simple way to avoid this issue is by marking the bottom side of the blade with a paint stick, permanent marker or a quick dab of spray paint. Find a place on the blade that is free of debris, so your mark remains after you clean the blade.
<\/p>\n\n\n\nBlock the blade for removal.<\/strong>
<\/p>\n\n\n\nWhen you get ready to loosen the nut, which secures the blade to the driveshaft, you need to prevent the blade from turning. By wedging a 2x4 under the blade and over the cutter deck, you will pinch the blade so that it won\u2019t turn. Keep in mind that you need to provide resistance from turning counter-clockwise. Place the wedge from the top, right side of the mower deck.
<\/p>\n\n\n\nRemove the blade.<\/strong><\/p>\n\n\n\n
Removing the blade takes a significant amount of torque. Make sure that you have a breaking bar that provides plenty of leverage and equip it with the proper socket to fit the drive nut. Place the socket over the nut with the breaking bar a little above the nine o\u2019clock position. Apply downward pressure on the breaking bar to break the nut free. You might have to apply penetrating oil to the area around the drive nut and washers if the nut is particularly stubborn.
<\/p>\n\n\n\nOnce the nut is loose, unscrew it, remove the blade and the washers. Pay attention to the number of washers and sleeves, as well as their placement, so that you can replace them in the correct order when you reinstall the blade.
<\/p>\n\n\n\nStep Three: Sharpening the Blade<\/strong>
<\/h2>\n\n\n\nWith the blade removed from the mower, you can sharpen it in a more comfortable position and do a better job of honing the edge consistently. The following steps will help ensure greater success in sharpening your mower blades:
<\/p>\n\n\n\nSecure the blade.<\/strong><\/p>\n\n\n\n
The reason for removing the blade from the machine is so that you can get at it better to sharpen it. Once it is off of the machine, it is best to secure it in a vice. Place the end of the blade with one of the cutting edges in the vice with the cutting edge facing upward. Tighten the vice until the blade is secure.
<\/p>\n\n\n\nClean off the blade.<\/strong>
<\/p>\n\n\n\nIt is common for grass and rust to cake your lawnmower blade. Though you won\u2019t need to clean off the entire blade (although the edge lasts longer if you do), you want to make sure that you clear all of the debris near the cutting edge so that you have better access to the edge for sharpening. You can use steel wool or a wire brush to clear away this debris. Especially stubborn buildup might require a cold chisel to remove it.
<\/p>\n\n\n\nSharpen the blade.<\/strong>
<\/p>\n\n\n\nMost people sharpen lawn mower blades with a flat file, but some also use a hand grinder. Your technique may vary a bit with each tool, but there are several standard guidelines to follow, including:
<\/p>\n\n\n\n\u2022 Be sure to maintain the proper angle, typically 45 degrees. <\/p>\n\n\n\n
\u2022 Make even strokes from the inside of the cutting edge toward the outside, moving away from you. <\/p>\n\n\n\n
\u2022 Do not draw backward, regardless of whether you are using a file or a hand grinder. <\/p>\n\n\n\n
\u2022 Once you have finished one edge, flip the blade over and sharpen the other edge. Use the same technique and as close to the same number of strokes as possible, so the edges are uniform.
<\/p>\n\n\n\nBench Grinder Alternative<\/strong>
<\/p>\n\n\n\nA bench grinder is particularly useful if the blade is severely nicked, but it also makes for pretty short work when sharpening as well. If you have a bench grinder, you can remove the blade from the vice after cleaning it and sharpen the blade on your bench grinder. Be sure to follow the proper angle of the blade.
<\/p>\n\n\n\n![\"\"\/](\"https:\/\/cdn.lawnlove.com\/images\/construction-664970.jpg\")
<\/figure>\n\n\n\nStep Four: Reinstalling the Blade<\/strong>
<\/h2>\n\n\n\nOnce your blade is sharp, you need to reinstall it on your mower. To be sure that it is properly installed, follow these steps:
<\/p>\n\n\n\nProperly position the blade.<\/strong>
<\/p>\n\n\n\nIf you marked the bottom of the blade with a paint stick, permanent marker or spray paint, properly positioning the blade is much simpler. Be sure to have all the washers and sleeves on hand and place them in the right order as you thread the nut through the hole on the blade and into the drive shaft. Finger-tighten the nut as far as you can.
<\/p>\n\n\n\nTighten the nut.<\/strong>
<\/p>\n\n\n\nBefore you can tighten the nut, you need to place your 2x4 wedge on the left side of the mower deck so that you have resistance against clockwise turning of the blade. Secure the socket with the breaking bar above the three o\u2019clock position and apply downward pressure. You need to repeat this several times until you cannot turn the nut anymore.
<\/p>\n\n\n\nPrepare to mow.<\/strong><\/p>\n\n\n\n
With the blade secured in place, you can remove your wedge, tip the mower back up onto its wheels and prepare to mow. If your mower is electric powered, you plug it in, turn it on and get started. If your mower is gasoline powered, you need to remember to reconnect the spark plug cable before attempting to start it.
<\/p>\n\n\n\nHow to Sharpen Lawn Mower Blades without Removing Them
<\/h2>\n\n\n\nThough you have much better access and it is more comfortable to remove the blade from your lawn mower to sharpen it, you can sharpen it without removing it from the machine. The following steps show you how to sharpen lawn mower blades without removing them from the mower. By not removing the blades, you can complete the task using only two steps.
<\/p>\n\n\n\nStep One: Preparing to Sharpen the Blade<\/strong>
<\/h2>\n\n\n\nPreparing to sharpen your lawn mower blade without removing the blade is similar to preparing to when you removed the blade. If not done correctly, there is a potential for disastrous results. Follow these steps carefully to produce the best results:
<\/p>\n\n\n\nAssemble the Following Tools and Equipment:<\/strong><\/p>\n\n\n\n
\u2022 Safety goggles or safety glasses. <\/p>\n\n\n\n
\u2022 Gloves. <\/p>\n\n\n\n
\u2022 2x4 block of wood 16\u201d to 20\u201d in length. <\/p>\n\n\n\n
\u2022 Additional 4x4 wood block 12\u201d to 18\u201d. <\/p>\n\n\n\n
\u2022 Wire brush and\/or steel wool. <\/p>\n\n\n\n
\u2022 File or grinder.
<\/p>\n\n\n\nUsing safety equipment is an essential element. Wear safety goggles or safety glasses and gloves before and during all the steps.
<\/p>\n\n\n\n![\"\"\/](\"https:\/\/cdn.lawnlove.com\/images\/clean-633064.jpg\")
<\/figure>\n\n\n\nDisconnect All Power Sources.<\/strong><\/p>\n\n\n\n
Just like when you removed the blade, it is essential to make sure that all potential power sources are disconnected to prevent accidental starting or turning of the blade while you work. Unplug the power cord or disconnect the spark plug cable from the spark plug.
<\/p>\n\n\n\nTurn the Mower on Its Side.<\/strong><\/p>\n\n\n\n
Turn the mower on its side, just like above with the carburetor is facing up on a gas mower. Placing a block under the motor or engine housing helps to stabilize the mower while you work, which is far more critical when you sharpen without removing the blade.
<\/p>\n\n\n\nStep Two: Sharpening the Blade<\/strong>
<\/h2>\n\n\n\nEven if you do not remove the blade from the mower, you follow the same steps to sharpen it. However, executing these steps is a bit different.
<\/p>\n\n\n\nSecure the blade.<\/strong><\/p>\n\n\n\n
Though you won\u2019t need backward resistance to remove the blade, you need to secure it so that it doesn\u2019t move while you are trying to sharpen it. Wedge a 2x4 under the blade and over the cutting deck to prevent the blade from turning while you work.
<\/p>\n\n\n\nClean off the blade.<\/strong>
<\/p>\n\n\n\nYou want to knock off any caked grass, rust or other debris from the blade so that you have unobstructed access to the cutting edge.
<\/p>\n\n\n\nSharpen the blade.<\/strong><\/p>\n\n\n\n
Though access is a bit more difficult, use the same technique for sharpening the blade with a file or hand grinder that you would use if you removed the blade. Here is a brief reminder of those guidelines:
<\/p>\n\n\n\n\u2022 Maintain the proper angle. <\/p>\n\n\n\n
\u2022 Even strokes, moving away from the center. <\/p>\n\n\n\n
\u2022 Do not draw backward. <\/p>\n\n\n\n
\u2022 Once you have finished one edge, turn the blade over and sharpen the other edge.
<\/p>\n\n\n\n![\"\"\/](\"https:\/\/cdn.lawnlove.com\/images\/wood-2268291.jpg\")
<\/figure>\n\n\n\nHelpful Tips
- 9 Best Lawn Mowers for Big Yards of 2025<\/a><\/li>
- 10 Best Lawn Mowers of 2025<\/a><\/li>
- Estimated cost: <\/strong>A flap disc can cost $5 while an angle grinder can cost between $30 and $86<\/li> <\/ul>
- Skill level:<\/strong> Advanced<\/li>
- Estimated cost:<\/strong> $47 to $133<\/li> <\/ul>
- Skill level:<\/strong> Advanced<\/li>
- Estimated cost:<\/strong> As low as $2 if you already have the drill. The cost of a drill ranges between $30 to $50.<\/li> <\/ul>
- Skill level: <\/strong>Beginner<\/li>
- Estimated cost:<\/strong> $5 to $10<\/li> <\/ul>
- Skill level:<\/strong> Beginner<\/li>
- Green and healthy lawn:<\/strong> Torn grass blades turn brown at the edges, making your lawn look dry and patchy<\/a>.<\/li>
- Safety precautions for blade sharpening<\/a><\/li>
![\"\"](\"https:\/\/cdn.lawnlove.com\/images\/goggles-1683644.jpg\")
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