Things You'll Need:
- Wrench
- Grinder
- 30 minutes
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Step 1
If you are using a walk behind lawnmower, then you'll need to turn the entire lawnmower on its side so that you can access the nut holding the blade on. Find the correct sized wrench to loosen and remove the nut. Now the blade will be free and can be removed. Note which side of the blade is on top before removing.
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Step 2
If you are using a riding lawnmower then you'll most likely need to remove the mower deck from the tractor. This will allow access to the blades. Using wrench, remove all the nuts that hold the blades tight. Remove blades. Note which side of the blade is on top before removing.
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Step 3
Examine blades. Look for excessive dings in the blades. If extremely bad, new blades may be required.
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Step 4
Take your blades to your grinder. A small one will work just fine for this job. Turn grinder on.
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Step 5
Start out by placing the beveled end of the blade (the part that actually cuts the grass) upside down against the grinding wheel. Always keep the blade moving along the wheel. This is what will sharpen the blade. Keep moving the blade to the left and then to the right several times and notice that this is creating a shiny look at the cutting point. Create a shiny look on all of the cutting surface for best results. Flip the blade and do this same thing to the other end of blade.
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Step 6
Carefully run your finger along the edge of the newly sharpened blade to feel sharpness. Uniformity is what you are attempting to feel at this point. If not felt, then run blade against grinder wheel again until you do.
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Step 7
Return to the lawnmower with your sharpened blades and re-install them. Make sure the nut that holds the blade is tight.
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Step 8
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