A lawn mower blade is a specialized tool that rips and cuts the grass. Over time, the blades of a lawn mower becomes dull, due to which it can’t effectively cut the grass. A dull blade will pull and rip the grass resulting in ragged tears. This will weaken the plant, thereby promoting fungal diseases.
It’s the owner’s responsibility to make sure that the lawn mower blade is sharp so that it can effectively cut the grass. A sharp blade will let you cut the grass faster. You can complete the task quickly without damaging the grass with a sharp lawn mower blade.
Manufactures generally recommend that you must sharpen the blade after every 8 to 12 hours of use. However, you will need to cut the grass more quickly if the mower is run over pinecones and branches.
How to Sharpen a Lawn Mower Blade?
Lawn mower blades can be sharpened easily. You don’t need to call an expert to sharpen the blade. Here are some tips to sharpen a walk-behind mower’s blade. Note that the steps does not cover sharpening the blade of a ride-on mower, as that requires different and more advanced techniques.
Step 1: Disconnect Power
You must first disconnect the power. This is important to avoid accidentally starting the mower when you are sharpening the blade.
Remove the battery pack if you are using a cordless mower. In addition, you should drain the fuel to avoid spilling any fuel when removing the blade.
Step 2: Loosen the Bolt Securing the Blade
You should now turn the mower to the side. Look for a bolt that secures the blade to the mower. Place a piece of wood between the blade and the interior surface of the mower. This will prevent the blade from turning when your try to pull out the blade.
If you cannot loosen the fastener, it is recommended to use penetrating oil. Try again after about 15 minutes to loosen the bolt. Another thing you can try to loosen the fastener is to place a petal pipe over the wrench to loosen it.
You should determine the side of the blade that face downward once the bolt is removed. This is important since you have to place the blade on the same side after sharpening it.
Step 3: Sharpen the Blade
You must next sharpen the blade that you have removed from the mower. But first clean the blade using penetrating oil. Remove dirt and mud using a bristle brush.
You should now clamp the blade in a vice. Make sure that the blade is clamped at an angel with the cutting edge facing you. Now, sharpen the blade using a powered blade sharpener that you can buy from a hardware store.
Sharpen the blade using the abrasive stone of the sharpener. Make sure that you are wearing safety glasses when you are sharpening the stone. Move the stone in a forward and backward movement along the edge of the blade using slight pressure. Check the blade’s edge after five to six strokes. You should continue using the sharpener until the blade is fully sharpened.
Step 4: Clean the Inside of the Mower
Before putting the blade back inside, you need to clean the mower from inside. You should remove leaves, mud, and other debris that may be stuck inside.
Step 5: Put the Blade Back in Mower
The last step is to put the blade back inside the mower. But make sure that you balance the blade once you place it back inside. This is important as it can result in wobbling of the mower. Mowing with an out of balance blade can damage the motor. So, make sure that you don’t ignore this step.
To balance the blade, you should place the center hold of the blade over a nail. Hold it in a horizontal position. The blade must be level. You need to sharpen the heavier side of the blade if it is not balanced.
If you want to buy a quality lawn mower, you should contact DR Power Store. We are a reliable Huntsville outdoor power equipment dealer serving the residents for over three decades.