The blade must be re-sharpened if cutting performance and behavior begin to deteriorate (i.e. if blades frequently snag on branches).

1. Stop the motor and disconnect the unit from the power supply. Clamp the blade in a vise.
2. File the exposed cutting surface of each blade tooth with a smooth round file. Be sure to retain the original angle of the tooth when filing.
3. Remove the blade from the vise, and power on the motor until the unsharpened edges of the remaining blade teeth are exposed.
4. Disconnect the hedge trimmer from the power supply and repeat the sharpening procedure as necessary.