One embodiment of the invention provides a rotary cutter for a brush cutter, including: a head main body (1) having a cord guide hole (2-1); and a pressure member (2) having a cord inserting guide hole (2-1) formed to radially penetrate through the pressure member (2). The pressure member (2) is operable between: a first state in which the cord inserting guide hole (2-2) of the pressure member (2) is aligned with the cord guide hole (2-2) of the head main (1) body so that a cutting cord (3) is insertable into the head main body (1); and a second state in which the pressure member (2) is pushed inwardly of the head main body (1) from the first state; a third state in which the pressure member (2) is rotated with respect to the head main body (1) from the second state so that the inserted cutting cord (3) is made into a bent state.
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