Skil PM4910-00 Manual Del Propietário página 27

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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.
2. Secure the blade in a vise (Fig. 24).
3. Wear proper eye protection and gloves and be careful not to cut yourself.
4. Carefully file the cutting edges of the blade with a fine tooth file or sharpening stone,
maintaining the original cutting edge angle.
5. To check the blade balance: clamp a nail or a screwdriver 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. 25).
Fig. 24
6. Replace the blade on the mower and tighten it securely.
WARNING
personal injury.
An unbalanced blade will cause excessive vibration when rotating at high
speed. It may cause damage to the mower and could break, causing
Fig. 25
27

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Sm4910-00

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