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How to Sharpen a Lawn Mower Blade

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Uploaded by on Jun 22, 2007

How to sharpen a lawn mower blade, step by step.

  • likes, 16 dislikes

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Uploader Comments (davidsloan2380)

  • Can you sharpen lawn mower blade with a hand file or is it just easier to go buy a new blade? I do not have any type of electric grinder just hand tools. Thanks

  • @mac777daddy Sure, a file works fine for sharpening a mower blade. It just takes a little longer.

  • i never changed the oil and i had my lawn mower for like 8 years. what happens if u dont change it?

  • @PunaniLicker69 Whether it's a lawn mower or a car engine, oil wears out and stops lubricating. Also motor oil collects all the dirt and dust and grit and corrosive by-products of combustion. Change the oil and the dirt an crud go with it. Old dirty oil increases wear on the engine's moving parts and shortens engine life. I change my lawnmower oil once a season but check out your owner's manual and see what they recommend for your mower.

  • Bent blades?  Best to replace them.

  • I'm considering a 6" 1/5 HP bench grinder to sharpen my mower blade. Is this enough power for blade sharpening?

  • @coppertrail Yes a 1/2 HP grinder with 6 in. diameter wheels is just fine for sharpening mower blades. If you're only going to sharpen mower blades, wood-splitting wedges and other mild-steel tools then a conventional high speed grinder (3600 rpm) will be fine. But if you intend to also sharpen tempered tools (wood chisels, knives, etc.) then consider a slow-speed grinder such as the DELTA GR275. These grinders run at 1800 rpm and are less likely to overheat the tool enough to wreck the temper

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  • I would sharpen my blade but its ruined it has a couple of big nicks on it, definitely needs replacing.. Nice trick coating underneath the deck with used motor oil, i should try that.

    Besides having an uneven cut i heard if you cut your grass with a dull blade your lawn can catch a disease?

  • Great video, thanks. Though I had to laugh about "preventing the mower from accidentally starting." You're kidding, right? I have never been able to start a gas mower at all. That's why I own an electric one :)

  • Man, You make me wanna go work on my lawnmower : - )

  • really well done !!

  • That was great! Very informative. Thanks!

  • Very good video. You speak clearly, and edit well. Thanks.

  • Very good video. You speak clearly, and edit well. Thanks.

  • Wow, sweet! Thanks! I went looing for how to sharpen a blade and learned how to do all the maintenance in about ten minutes. Seeing how easy it is makes me actually want to maintain my mower!

  • @OffroadMadness1 Good idea, thanks. 

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