Riding lawn mower is a necessary chore to keep your yard neat. If you want the best finishing out of your trusty mower, replacing the blade can do wonders. Don’t worry if you never replace or don’t know how to remove lawn mower blade.
Table of Contents
- How To Remove Lawn Mower Blade
- Frequently Asked Question (FAQ)
How To Remove Lawn Mower Blade
Follow these simple steps to remove blades from your lawnmower.
- Put on safety gloves.
- Unplug spark plug.
- Lift the Mower.
- Jam a wood piece with the blade to stop turning.
- Use a proper wrench to unscrew the nut.
- Finally, remove the old blade to replace it with a new one.
For your convenience, we will be discussing all the steps in detail so you can understand the right way to do it.
Going Deep Into Removing Lawn Mower Blades
Most of the riding lawn mower comes with a single long blade bolted from underneath. Chances are your mower blade installed in the same manner. Furthermore, it’s always a good idea to check the user’s manual for instructions that came with mower. If you lost it, try finding it on the manufacturer’s website.
1. Put On Safety Gloves
Whenever you are working with any power tools, there are some safety precautions to follow. These are obviously to protect you from health hazards. No matter how small the risk is, it’s a bad practice to ignore the significance of safety gear. In this case, we will need a pair of safety gloves.
If you don’t have safety gloves or are not sure which gloves to use to complete this task, just remember, we will be working with lawnmower blades. Mower blades are incredibly sharp to give you an idea. Even a dull blade can cut you with slightest of pressure.
Therefore, it’s best to stick with thick leather gloves or any gardening gloves with durable fabric. Most of the time, you will be holding the blade with your hand, so take all the time you need to prepare adequately.
2. Lift The Mower
After you have taken all the preparation, pick a place where you will remove the blade. Garage or in your backyard sounds ok, but make sure no children are playing around. Children are quite curious whenever they see new things, and accidents can happen anytime.
In order to remove the blade, you need to lift the mower to a certain height to access it from the bottom. It’s easy to use a jack or build a wooden ramp to lift the front side of the mower. Why the front side? You don’t want engine oil to sip out through the filter or any other places while working.
If you have following the instruction closely, by now, you have lifted the mower properly. Now turn off your engine and activate parking brakes. You will be prying nut with pressure repeatedly. Make sure the curb is on, so it doesn’t roll out accidentally.
3. Unplug Spark Plug
Earlier, you have managed to lift the mower, and now you can see the blade. Don’t jump in to take it out just yet.
So many people do that without knowing. This can be very dangerous! In the worst-case scenario, you may cut yourself if it turns on by accident.
To mitigate this issue take out the spark plug from the socket. This way, you will be making sure of no accidental ignition while working the blade.
Just make sure after you are done with the repair, put the plug back in where it was before.
Otherwise, the engine won’t start because you have taken out the part that helps run a combustion engine.
4. Jam A Wood Piece With The Blade To Stop Turning
If you looked at the blade, you would see a bolt in the middle of the edge. That bolt is the only thing that’s locking the blade with the spindle. If you try to unscrew the nut, the blade will actually rotate with your motion. It’s because mower blades rotate counter-clockwise, and the same goes for the bolt when you want to unscrew them.
Theirs is a quick solution to this problem. You just have to jam the blade with something. You can use your hand to hold down the edge, assuming you have the safety gloves. But if the lawnmower is in use for a long time or been a while since last change, chances are it will be a lot harder to unscrew.
Use a piece of wood that is 2 or 3 inches shorter than the total blade length. It doesn’t need to be precise. Just use your handy skill to jam the wood piece with the blade, so it doesn’t rotate. You can also use a clamp to prevent it from turning.
5. Use A Proper Wrench To Unscrew The Nut
After you have successfully blocked the blade from turning, now it’ time to unscrew the nut.
You should know that different manufacturer uses different size nut on their machine.
Some companies use unconventional nuts to prevent users from taking it apart or void warranty.
If you are not sure which size wrench to use to unscrew the nut, take a close look and try every size of wrench you have. In most cases, the 15/16 socket works just fine. Remember to turn your wrench counter-clockwise to unscrew and clockwise for tightening up.
Even if you blocked the blade from turning and using the right wrench to lose the nut, you might face difficulty. Using a relatively small wrench, you won’t have much of leverage unscrewing the jammed nut. You can always use a steel pipe as an extension if you don’t have any barker bar.
6. Remove The Old Blade To Replace With A New One
If everything went right, you have successfully unscrewed the nut. Keep the nut in a safe place for later use. If there is a washer after the nut, carefully take out that too and store it. Before removing the blade from the socket, see which way the blade’s sharp part is facing. It should be on the counter clock side.
Many people forget this and install the blade in invert. When that happens, you won’t be getting any results from your lawnmower. It will tear up the grass badly. Take a photo with your smartphone before taking off the blade so you can reinstall it the proper way.
Find a suitable replacement for your mower blade can be challenging. There are lots of sizes and types available in the market. It would be best to take the old module with you when you go shopping for a new blade.
That’s it; now you know how to remove a blade from a lawnmower.
Frequently Asked Question (FAQ)
- How Long A Lawnmower Blade Lasts?
Does it depend on several factors like how long you have been using the lawn? How intense is your mowing work? How much area have you covered with your lawnmower? And so on.
Many companies give a general idea of how long it would last. Some are in months; some are in sessions and area coverage. It’s best to do a regular maintenance check on blades sharpness, particularly before the mowing season starts.
- How To Sharpen Lawn Mower Blades?
There are many ways you can sharp a mower blade. The easiest and cheapest way is with a steel file. You can also use various power sanders with appropriate grit level. Make sure you follow the original grove of the blade when sharpening.
- Should I Sharpen Or Replace My Lawnmower Blade?
Generally, lawnmower blades are pretty sharp. Some also come with a thick edge to increase durability. Manufacturers often state how long their blade will be able to cut grasses.
If the blade thickness is high and there is no structural damage visible, you can always re-sharpen the blade for a couple more mowing. But if it is broken or too thin for re-sharpen, you are better off with a new blade.
- Should Mower Blades Overlap?
Most Double and triple-blade mower do not overlap typically with each other. They maintain a precise distance and level at which pint they never touch each other if you have seen these before you may recognize the triangle shape, where each corner has its blade.
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Keeping your lawn beautiful and perfect generally depends on the lawnmower you are using. If your mower has a sharp blade, you will have a much better result than a dull one.
Since now you know how to remove riding lawn mower blades, it would be easy for you to swap out a new blade quickly in the mowing season. I hope you like the guide and find the information you are looking for before your next buy.