Keep
your Lawn Mower Blade Sharp for Clean Cuts
Blade Care -- For best results, lawn mower blades
must be kept sharp. Lawn mower blades can be sharpened with a file or on a grinder wheel.
Never attempt to sharpen the blade while it is on the mower. Special care should be taken
to keep the blade balanced. An unbalanced blade will leave an uneven cut on the lawn and
can eventually cause damage to the lawn mower or the engine. To check a blade's balance,
drive a nail into a beam or a wall leaving approximately one inch of the straight nail
exposed. Place the center hole of the blade over the head of the nail. If the blade is
balanced, it should remain in a horizontal position. If either end of the blade moves
downward, sharpen the heavier end until the blade is balanced.
Check and Replace the Blade
If your lawn mower blade is chipped, dented, bent, cracked or dull now is
an excellent time to replace it.
A study at the University
of Nebraska proves that gas-powered mowers with sharp blades use roughly
20-percent less fuel than mowers with dull blades. Plus, sharp blades
slice grass tips cleanly so your lawn looks better and is less susceptible
to disease.
A dull blade on your lawnmower can leave
your turf looking worn-out, yellow, and dull looking. If you love your
grass, don't beat it into submission, it deserves better than that! Click for the big picture.
A sharp blade on your lawnmower gives
your lawn a quality "haircut" and will not leave it looking like
it was attacked by hungry goats. Click for the big picture.
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How
to Replace the Blade
Be sure the Spark Plug Wire is disconnected then tip your lawn mower on
its side.
Use a piece of wood to block the blade and keep it from rotating while you
work to remove it. An old blade may have jagged edges that can cut you if you are
not careful so be sure to wear gloves when handling it to protect your hands. It also
would be a good idea to keep the gloves on when handling the new blade since it definitely
will be sharp.
Remove the bolt that holds the old blade.
Mount the new blade with
the curved edges toward the housing. If the blade is installed wrong it will not cut
correctly and may cause an accident.
Fasten the new blade using the original washers and bolt. Tighten the bolt
that holds the blade to a torque of 30 pounds (set your torque wrench to thirty pounds
then tightened the bolt one click. Do not click it again as you eventually will ruin
your torque wrench if you continue to give "just one more click to be sure").
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