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Operating your mower with a dull blade can be hard on your lawn, leaving the grass tattered or torn rather than cut. This will cause it to look yellow and restrict healthy growth. Also, a damaged blade can be a danger to the operator or nearby people.
Replacing the blade isn't difficult and is a task that anyone should be able to complete in 15-30 minutes. There are some things to keep in mind as you start this project though. You will be working with a sharp object (the blade), so using a pair of heavy-duty gloves, removing the battery, and carefully blocking the blade are important safety measures to keep in mind as you start your work.
Once you've completed the replacement, I recommend mowing your yard right away and experience the satisfaction of your crisply mowed lawn!
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Firmly grasp the battery, depressing the battery release and slide the battery out.
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Turn the mower upside down on a flat, stable surface.
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Use an 8" to 10" block of 2x4 to prevent the blade from spinning counterclockwise.
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Using a 15 mm socket wrench, remove the blade nut by turning it counterclockwise.
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Remove the nut spacer and blade insulator.
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Remove the blade.
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Identify the alignment shapes on the blade hub.
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Install the new blade on the hub using the alignment posts.
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Replace the insulator, spacer, and nut.
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Set the torque wrench to between 350-400lbs.
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Tighten the blade nut with the torque wrench by rotating the wrench clockwise.
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