To sharpen the blade on your lawn mower:

  1. Remove the spark plug wire.
  2. Tilt the mower up on one side.
  3. Clamp a block of wood to the mower deck to prevent the blade from turning.
  4. Loosen the bolt holding the blade in place with a wrench, turning it counterclockwise.
  5. Mark the blade so you’ll know which side is up.
  6. Sharpen the blade on the beveled side—following the angle of the bevel—using a file, grinder, sharpening stone, or belt sander.
  7. Remove any burs on the flat side of the blade with a file or sharpening stone held flat against the width of the blade.
  8. Put the blade back on the mower with the beveled side of the blade facing up.
  9. Tighten the bolt with a wrench, turning it clockwise.
  10. Turn the mower back upright.
  11. Reattach the spark plug wire.

Watch the video above to find out more.


If you want an attractive lawn, it’s important to keep your mower blade sharp. Begin by removing the spark plug wire so there’s no chance of accidental starting. Then clamp a block to the deck to hold the blade in place while you loosen the retaining bolt with a wrench. Pay close attention to which side is facing down.

To sharpen the blade you can use a hand file, a bench grinder, or even a belt sander. Whatever tool you use, you want to work the beveled edges down to a point and remove any burs or nicks. When you put the blade back on, be sure the retaining bolt is nice and tight before reconnecting the spark plug.

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Danny Lipford


Danny Lipford is a home improvement expert and television personality who started his remodeling business, Lipford Construction, at the age of 21 in Mobile, Alabama. He gained national recognition as the host of the nationally syndicated television show, Today's Homeowner with Danny Lipford, which started as a small cable show in Mobile. Danny's expertise in home improvement has also led him to be a contributor to popular magazines and websites and the go-to source for advice on everything related to the home. He has made over 200 national television appearances and served as the home improvement expert for CBS's The Early Show and The Weather Channel for over a decade. Danny is also the founder of 3 Echoes Content Studio,, and Checking In With Chelsea, a décor and lifestyle blog.

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