• Recently viewed  
  • Cart 

    Your Shopping Cart

    Showing last added item

    Parts Qty

    Total items:

Can't locate your model number? Use our finder

Choose your product type

Common model number plates

View sample model numbers by selecting your product brand

Select

Lawn & Garden

Get your yard tuned up for summer.
Check out our Lawn & Garden Equipment how-to guides.

Other Riding mower & tractor Information

How to Sharpen a Lawn Mower Blade

It’s easy to tell when the blade on your lawn mower is dull: the tips of the grass blades are tattered and brown. You can sharpen the blade yourself, or take it to a hardware store to have it sharpened. To sharpen it yourself, safely, follow these steps:

How to Sharpen a Lawn Mower Blade
  1. If you have a gas powered mower, disconnect the spark plug wire. Carefully tilt the lawn mower on its side with the fuel tank's fill hole facing up.
  2. Put on work gloves to protect your hands from being cut. To immobilize the blade, wedge a wood block between the blade and a solid area of the mower housing.
  3. Remove the bolt and washer, and inspect the bolt. If it’s damaged, replace it with one the manufacturer approves, rather than a standard bolt (you can order it from Sears PartsDirect). Blade bolts often are specially designed and heat-treated to prevent failure. Any failure of the blade assembly during use could throw a blade and cause a lot of damage.
  4. Remove and inspect the blade. If it’s bent, dented or badly chipped, get a manufacturer-approved replacement. A damaged blade cuts grass poorly and can make the mower vibrate excessively.
  5. Secure the blade in a vise and sharpen the blade with a file, or sharpen it on a bench grinder. Follow the existing angle of the cutting edge and, if using a file, file in only one direction.
  6. After sharpening, check that the blade is balanced. Drive a finish or casing nail into a wall and hang the blade horizontally, through the center hole. If one end dips, grind more from that end.
  7. Use a torque wrench to reattach the blade, tightening the bolt to the torque specified in the owner’s manual — most blade bolts require around 45 to 55 foot-pounds of torque.
  8. Reinstall the spark plug.
© Copyright 2011, Sears Brands, LLC. All Rights Reserved.

You Might Also Enjoy

Changing the oil is one of the best things you can do to ensure a long life for your lawn tractor.
Dirt is your lawn tractors enemy.
Hide

M-F 6:30 a.m. - 10:30 p.m. CST
Sat 7:00 a.m. - 9:30 p.m. CST
Sun 7:30 a.m. - 9:30 p.m. CST


Call close >>

Thank you! Your model has been added.

Save model in your profile permanently

Don't have a profile? It's fast and easy to create one. Sign up now and you can access your models anytime, anywhere.

Sign In Register

Save to this computer*

This option is valuable if you expect to revisit Sears PartsDirect using this computer and browser in the future.

*Saved models will only persist on this computer and browser. Model retention may be affected by your browser settings.

OK, Continue

Register Existing Customer? Sign In

By clicking Register, I agree to the terms of use and privacy policy.

Forgot password

The email address you entered is incorrect. Please try again.

Please enter your email address for this account. We will send you a confirmation email containing a link to reset your password. The password can be used across the entire suite of Sears websites.

Email Sent

An email has been sent to your account. Please follow the link in the email and you'll be prompted to create a new password. The password can be used for PartsDirect, Kmart, Sears, etc.

Password must include

  • At least 6 characters, no more than 15.
  • At least 1 letter (a - z)
  • At least 1 number (0 - 9)
  • No spaces
  • No special characters (i.e. %$#!@*)
  • Passwords are CaSe SEnSiTivE
  • Can't repeat same character more than 3 times in a row