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56-VOLT LITHIUM-ION CORDLESS LAWN MOWER — LM2100SP & LM2100
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SHARPING FREQUENCY
Sharpening the blade twice during a mowing season is usually
sufcient under normal circumstances. Sand causes the blade
to dull quickly; if your lawn has sandy soil, more frequent
sharpening may be required.
WHEN SHARPENING THE BLADE:
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Make sure that the blade remains balanced.
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Sharpen the blade at the original cutting angle.
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Sharpen the cutting edges on both ends of the blade,
removing an equal amount of material from each end.
TO SHARPEN BLADE IN A VISE:
1. Remove the blade from the mower (please see REMOVING
THE BLADE.)
2. Secure the blade in a vise (Fig. 30.)
3. Wear proper eye protection and gloves and be careful not to
cut yourself.
4. Carefully le the cutting edges of the blade with a ne tooth
le or sharpening stone, maintaining the original cutting
edge angle.
5. To check the blade balance: clamp a nail or a screw driver
with a round shank in the horizontal position. Position the
blade so that the nail or round shank of the screwdriver
supports the blade through its center hole. Balance
the blade horizontally. If either end of the blade rotates
downward, remove some metal from the heavy or lower
end until the blade is balanced. It is balanced when neither
end drops (Fig. 31).
6. Replace the blade on the mower and tighten it securely (please see INSTALLING THE BLADE).
WARNING: An unbalanced blade will cause excessive vibration when rotating at high speeds. It may cause damage
to the mower and could break, causing personal injury.
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30
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