that brand’s Lawn Mower & Garden Tool Sharpener attachment (Amazon, Home Depot) can help in sharpening the blade. Put the blade assembly back together, following the picture you snapped earlier.

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Take the blade itself in here, and they'll sharpen it while you wait for $8.50. Take the whole mower in, and it's $18.50 and might take a little longer. This is where a lot of pros go. Casey's ...

The best lawn mower blade sharpeners hone lawn mower blades to perfection, allowing mowers to properly maintain their lawn's ...