Step 7: Grind the blade to sharpen.
Find an area where the blade is dull but the cutting angle is still clearly visible. Making multiple passes, slowly grind the entire length of each side of the blade evenly. It is not necessary to grind out every nick. It’s more important that the blade remain balanced.
 Slowly grind the entire length of each side of the blade.
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| Be sure to disconnect the spark plug wire from the mower spark plug before attempting to remove the mower blade. Wear safety glasses and gloves when sharpening the mower blade. After sharpening your blade and putting the mower back into use, regularly check that the nut securing the blade is tight. |
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