Keeping your walk-behind lawn mower blades sharp is essential to the health of your lawn. Get everything you need to change out, sharpen or replace your walker mower blades. Blades should be sharpened at least once a year, and replaced every two to three years. Whether you need the blade removal tool, a balancer and sharpener kit or replacement mulching and standard lawn mower blades, you'll find MTD Parts has the original manufacturer's equipment you want to maintain your machine. Match your part number to the replacement walk-behind lawn mower blades on this page to find the right fit. If you can't find what you're looking for, use the Part Finder on the left.