How to Sharpen a Power Mower Blade

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When sharpening a power mower blade, remove the blade from the machine, secure it in a vice, and run the file down the blade in a single direction. Keep mower blades sharp for the best results with advice from a professional landscaper in this free video on lawn maintenance.

Part of the Video Series: Lawn Care & Landscaping
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Video Transcript

Hello! I'm Dan LeSieur with DK LeSieur Incorporated. We're a landscape contractor in the City of Washougal, state of Washington. Today, we've been asked to sharpen a power mower blade. I've already taken some off the machine so we have 'em here. So first, you just want to pick your blade, I already have one set up here. I have put it in my vice, make sure it's nice and tight and I have a double cut diamond, eight inch file. So that's the best file to use. Real common there, couple bucks. As you can see, this blade has been used quite a bit. So right now you're going to take a look at your blade, make sure it's what you're looking at and I always take the top off like that, a couple strokes, see what you'll have, come off the back, take those burst off 'cos there's going to be some burst there and then go in one stroke all the way across. You don't want to stop in the middle because then you're going to have some burst in there so all the way across each time, as you can see. And then you don't want your blade so you cut your finger, go right over the top. It gives you a much better looking grass as you cut it. I'm off with this over. I'll show you've got one sharpened already. So all ready. So if you look, that blade's been sharpened. It's not sharp to the touch. You want it to be sharp but you don't want to be able to cut yourself. When you are cutting grass, the sharper this is, the better it's going to cut.

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