Dull Mower Blades Might Cause Disease Or Infestations
In order to mow your grass with a clean, straight cut, sharp mower blades are a must. If you haven’t ever sharpened your blades or it’s been a while since you have, chances are you are doing more harm to your grass than you realize. Dull mower blades will tear your grass instead of cut it cleanly. You will be able to see the evidence of a torn grass blade if you look close enough at its jagged tip or see that your lawn is mysteriously starting to brown.
Every time you mow your lawn, your grass needs a little bit of recovery time. With sharp mower blades, this recovery time is short and easy. With dull mower blades, your grass will take a little bit longer to bounce back. This means that there is a longer period of time when your lawn is susceptible to disease or infestations. So, by not paying attention to your mower blades and tearing your grass up, you might cause yourself more headache, time, and money down the line to combat any disease or insect issues.
Where To Sharpen Lawn Mower Blades
- Post comments:
Keeping sharp blades on your lawnmower is a simple way to get a clean cut on your lawn. Do you have a problem with your mower ripping up chunks of your sod? Having a sharper blade is an excellent way to fix that problem! So let’s say you’re interested in having that done, how would you go about it?
Every area will have a local lawnmower mechanic who can sharpen the blade, but you can also sharpen your lawnmower blades at home! There are several options, but the easiest one generally only involves some simple tools that many people already have, and are very easy to find.
When it comes to lawn care, it’s easy to remember the big things, like mowing your lawn, maybe even aerating it once in a while. But when it comes to the small things, like sharpening your lawnmower blade, they can fly under the radar while we’re on autopilot. Let’s go into detail on how you can get your lawnmower blade taken care of!
Balancing The Mower Blade
These methods are rather forgiving, however, you should take care to not miss an important step: periodically balancing the blade. After taking off some metal on either side of the blade and achieving a nice edge, you need to ensure the blade still balances evenly.
To do this, hammer a 16D or similar nail into a wall in your shed or shop and hang the blade from its center point. If it stays balanced, youre all done. if not, mark the heavy side with a Sharpie marker and take some additional metal off that side by continuing to sharpen it. Most of the time, you can keep a blade balanced by staying aware of how many passes you make with a grinder. Still, periodically check the blade balance to ensure you havent drifted too far on one side or the other.
Regardless of which grinder method you use, balance the blade periodically to ensure it stays even.
Read Also: Lawn Aerator Lowes Rental
Why Its Important To Sharpen Your Lawn Mower Blades
A dull lawn mower blade rips and pulls the grass blades, leaving ragged tears that both weaken the plant and promote fungal growth and other grass diseases. A sharp blade, on the other hand, cuts cleanly, allowing the plant to heal and recover quickly. A lawn mower blade sharpening also lets you complete your lawn-cutting chore faster and with less stress on the mower.
These steps will work for just about any walk-behind mower. Riding mowers require different blade removal techniques, which we dont show here. If youre having trouble with your lawnmower find out why your lawnmower wont start.
My Final Thoughts On Sharpening Your Lawn Mower Blade Without Removing It
Keeping your lawn mower blade sharp doesnt have to be difficult. Sharpening your lawn mowers blade without removing it is quick, easy, and very effective.
Its one of the simplest ways to keep your lawn mowers blade in good condition without just replacing the blade.
Plus, your grass will definitely appreciate the sharper blade. It will be healthier, grow faster, and less vulnerable to disease when you keep your lawn mowers blade in good condition.So, now that you know how I know how easy it can be theres nothing to get in your way.
Keep your lawn mowers blade sharp, keep your lawn mower effective, and enjoy your beautiful lawn.
Read Also: When To Aerate Lawn In Iowa
How Do You Know When You Need New Lawn Mower Blades
If a blade is over 2 years old, it is definitely time to replace it, but there are other scenarios where its a very good idea. Extensive damage, such as curling at the tips, deep nicks that sharpening can fi, or visible bends in the blade are all good reasons to get a replacement before your lawn and possibly your mower get damaged.
Sharpen The Lawn Mower Blades
Once you confirm that the unit is at an appropriate angle, you may proceed to get your dull blades sharpened. As long-time lawn mower owners, wed advise you to first clean out the grass clippings on its surface.
Using the water bucket, brush, and putty knife, ensure that the mowers blades are free from rust and other debris. After that, set the metal file or electric grinder at the cutting edge of your mower blade.
As you use the hand grinder or flat file, keep in mind that the mower blade must not be at an uneven angle. Besides that, the sawing motion must only go in one direction.
Given that the lawn mower blade wont be unmounted, there should be uniform strokes on each side. Another tip we can give you is only to sharpen the top edge of the lawnmower blade.
Grinding faster wont necessarily give you sharp blades, so the best you can do is preserve that energy and do the task smoothly.
Don’t Miss: True Green Prices
Clean The Lawn Mower Undercarriage
Once the blade is locked in place, you should take this opportunity to clean out the bottom of your lawn mower. Clean lawn mowers are more effective, tend to be able to move faster, and put less stress on the lawn mowers motor.
A shop rag and simply cleaning solution is all you should need. Scoop out any remaining grass clippings, mulched leaves, and twigs, and then gently clean the bottom of the lawn mower around the blade.
If you use any water during this process, make sure the undercarriage of your lawn mower is completely dry when you stop. If you leave the metal wet, its more likely to rust and corrode over time.
How Good Are Manual Lawn Mowers
Manual lawn mowers are a great option for homeowners looking for an easy solution to maintaining their properties. They are relatively good, giving you the ability to manage most types of grass effortlessly. However, theyre not the ideal solution for thick or overgrown grass, as they lack the power of electric or gas mowers.
Rotary mowers are fantastic if you need a yard tool that helps you get into tight spaces and for weekly yard work. Theyre designed with multiple blades that turn in succession, clipping away at your blades of grass. Youll also find theyre easy for everyone in the family to use, making them ideal for seniors and kids.
Recommended Reading: Soil Aerator Lowes
Should The Blade Be Sharpened Or Replaced
Sometimes theres no need to sharpen your lawn mowers blade because youre actually due for a replacement. Lawn mower blades dont have a specific lifespan, but generally, they should be swapped out every 2 or 3 seasons. The best way to tell if this is the case for you is to take a look at your blade. If the blade is bent, has large nicks/dents, or is suffering some serious rust damage, you should probably buy a new one. Knowing when to replace lawn mower blades can save you a ton of time.
Eight Steps To Sharper Blades
1. Disconnect the ignition wire from the spark plug. Thatll eliminate any chance of the engine accidentally starting up while youre working on the mower. Also, drain the gas tank so it wont spill any fuel while you remove the blades.
2. Tip the mower onto its side to expose the retaining nut or bolt that secures the blade to the underside of the mower. To keep the blade from turning, wedge a short wood block between the end of the blade and inside surface of the mowing deck. Next, use a large ratcheting wrench and socket to loosen the nut or bolt. If the fastener is rusted on, apply some penetrating oil, such as Liquid Wrench, wait 10 minutes or so and try again. And to increase leverage when loosening a particular stubborn fastener, slip a metal pipe over the wrench handle.
3. After removing the retaining nut or bolt pull off the mower blade, making note of which side of the blade faces downward. Its important that the blade gets bolted back on in the same orientation.
4. With the blade removed, take a minute and scrape clean the underside of the mowing deck with a narrow-blade putty knife. Remove all caked-on grass, mud, leaves and other debris. Also, clean both sides of the lawnmower blade by first spraying with penetrating oil, and then scrubbing with a stiff-bristle brush.
While the nail-in-the-wall technique does work, for more precise results, use a lawnmower blade balancer, a multi-tiered, cone-shaped metal fixture.
Also Check: Humic12 Home Depot
Did You Know What Angle Should Lawn Mower Blades Be Sharpened At
If you have a yard and you know the use of a lawn mower. However, while using it, you may have concerns about what angle should lawn mower blades be sharpened at.30 o 45-degree angle is the standard parameter to consider. But you should also know the right way.
When you use a lawn mower, youre using a machine with rotating blades to cut the grass to the same height all the way across. To move the blades forward a manual push requires.
Youll learn in this article at what angle to sharpen your lawn mower blade. Maybe you cant do it alone. However, we are confident that you will try figuring it out and appreciate it if you read it.
How To Sharpen Your Lawn Mower Blade Without Removing It
Keeping your lawn mower blade sharp is critical to keeping your lawn looking as good as possible.
Not only do sharp blades cause less damage to the grass youre cutting, but they also do a more even job which helps to keep your lawn looking better after youve finished.
Of course, grass doesnt cut easily and is full of little silicate particles that dull your lawn mowers blade over time.
That means that you need to sharpen your lawn mower blade regularly if you want to maintain peak performance and keep your lawn as healthy as possible.
You could send your lawn mowers blade a professional to get it sharpened, or pay for replacement. Or, you can go the more cost-effective route and sharpen it yourself at home.
You can even sharpen your lawn mower blade without having to remove the blade from the lawn mower. This guide will show you how, though I still recommend taking the blade out for a more complete sharpening every once in a while.
In this guide youll learn:
- How to sharpen your lawn mower blade
- Why its important to sharpen your lawn mower blade
- And much more!
You May Like: Grass Plugs Lowes
Sharpening The Lawn Mower Blade:
Should you sharpen using a bench grinder? You could, but theyre a little too powerful. We recommend sharpening by hand, so that youre able to more closely control the sharpening.
Using a vice makes sharpening the blades much easier, as youre able to hold them in place. We recommend that you wear gloves, as the blade will be very sharp, and metal filings will come off the blade as you sharpen it.
Lawn mower blades are only sharp on one side . So be sure to only sharpen the chiseled side. As Jack says in the video, its similar to a chisel that you would use for woodworking.
Using your flat file, begin filing, following the contour of the blade. File into the direction of the cut . Youll notice that the blade will start to become silver. If there are any detents in the blade , you can rotate your file.
Continue to file until the blade is sharp.
How To Use An Angle Grinder To Sharpen Lawn Mower Blades
Using an angle grinder and vice grip is probably the most common way people sharpen their lawn mower blades. This goes for homeowners and small businesses alike.
Many homeowners, and even some businesses, will actually take their blades into the local mower shop to have their mower blades sharpened. Although this is an option, we feel the cost and time involved in this makes it less than ideal, to say the least.
Here is a great video on blade sharpening with an angle grinder:
If you watched the video or were already familiar with this method of sharpening mower blades, it simply involves removing the blades from your mower, inserting them into a vice grip 1 at a time, and grinding the cutting edge with an angle grinder. After grinding one side of the blade, you need to rotate the blade 180 degrees in the vice to grind the other side of the blade.
Although this is a relatively quick process, the other options are much quicker and more accurate. Lawn mower blades come from the factory with a specific angle on the angled edge. This angle should be kept as you grind your blades over time.
The most common lawn mower blade angle is 30-35 degrees. When sharpening your mower blades it is important to keep this 30-35 degree angle over time.
Don’t Miss: Aaron Lawn Mowers
How Often Should Lawn Mower Blades Be Sharpened
There are a few obvious factors that will determine how often you need to sharpen your mower blades.
First off, it depends on how often you cut your grass. In general, after cutting your grass for about twenty hours, your mower blade will need to be sharpened. Therefore, a more extensive lawn that might take an hour to cut will need the blades sharpened after about twenty uses. A smaller property that only takes a half-hour to cut will require the blades sharpened after forty uses. You can work out the math for the rest. The more often you mow your grass, the more often youll need to sharpen the blades.
The overall condition and age of your mower can also affect how often your blades need to be sharpened, as well as if the blades are balanced. Cleaning your lawn from garden debris, kids toys, rocks and twigs can extend the lifespan of your mower blades.
Doing a sweep of your lawn before cutting isnt only so that you dont fling dog poop everywhere but to make sure your mower blades dont get needlessly dull from hitting rocks or tearing a kids plastic toy to shreds.
We do recommend that you sharpen your mower blades at the beginning of every season, and then youll likely need to do it at least one more time during the summer.
When’s The Right Time To Replace Them
A good rule of thumb for the average homeowner is to replace your mower blades annually. You may also think about replacing them if they become damaged. Dig up that product manual if you want a more clear-cut answer.
Always make sure to take protective measures whenever sharpening your mower blades at home. Wear gloves and eye protection and disconnect the spark plugs.
Recommended Reading: Riding Lawn Mower Disposal
Getting To The Bottom Of Your Lawn Mower
Regardless of whether you have a push mower, a self-propelled lawn mower or a robot lawnmower, they all have one thing in common: a blade underneath. Without it, they wouldnt be able to cut the grass.
A good blade leaves a good cut
The first step to sharpening your lawn mower blade is to get access to the underside of your mower. To do this, unplug the spark plugs and power source of your mower before turning it on its side. The idea is to prevent the motor from accidentally turning on and causing a severe injury. Safety first!
Do Lawn Mower Blades Need To Be Timed
A single-bladed mower will not need to be timed. A twin-blade walk behind mowers like a Toro or some lawn tractors will need blade timing. The purpose of the timed blades is so the blades can overlap.
Overlapping blades help prevent uncut grass between the blades. If your blades can touch each other, then yes its likely you have a timed deck and the blades will need to be timed. I wrote a post about timing your mower blades here Replacing timed mower belt.
Also Check: How To Repel Geese From Yard
Sharpen The Blade With A File
- Clamp the blade in a vise and sharpen the cutting edge with a mill bastard file, held at the same cutting angle as before.
- File until the blade is butter-knife sharp.
- Once you remove the blade, examine it to determine whether to sharpen it, or replace it.
- Pro Tip: Sharpen your blade with a hand file. Mower blades are made from fairly soft steel. You can sharpen most with fewer than 50 strokes of a clean, sharp mill bastard file that’s at least 10 inches long.
- Note: Grinders also work, and much more quickly . But they’re more difficult to control and you might overheat and ruin the blade.