An Arnold Blade Balance & Sharpener Kit can sharpen dull lawnmower blades. A dull blade can make your lawn look bad and uneven in places. It can also lead to lawn diseases and fuel inefficiency for your lawnmower. Sharpen a blade using the Arnold Blade Balance & Sharpener Kit by placing the blade in a vice, putting the blade sharpener in an electric drill, grinding off the imperfections on the blade and making sure the blade is balanced.
- Skill level:
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Things you need
- Lawnmower blade
- Electric drill
Place the lawnmower blade with the cutting side up in a vice. Place the blade sharpener into a 1/4 or 3/8-inch electric drill. Tighten the chuck to keep the blade sharpener in place and set the rotation of your drill for drilling.
Using the front face of the blade sharpener, grind off the burrs and nicks from the flat underside of the blade's edge. Place the sharpener over the edge of the blade with the nylon guide against the flat underside and the grinding wheel against the bevelled edge.
Move the sharpener lengthwise along the edge of the blade while keeping a slight downward pressure against the blade. Always keep the nylon guide flush with the blade's flat underside. Sharpen the outer three to four inches of the blade only; do not sharpen the entire blade. Repeat this process to sharpen the opposite cutting edge of the blade.
Make sure the blade is properly balanced by placing it on the blade balancer after you have finished sharpening the blade. Sharpen the blade some more if it is not balanced.
Tips and warnings
- Disconnect the wire for the spark plug before you work on your mower.
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