A hand-held cutter comprising: a disc-shaped cutting blade which is configured to rotate about a rotation shaft to cut a target; a cutter body which rotatably supports the cutting blade; a protection cover which is rotatable about the rotation shaft and covers a portion of the cutting blade; a pressing mechanism which is movable in parallel to the rotation shaft, and when positioned close to one side of the hand-held cutter, imposes and maintains restrictions on rotation of the protection cover by pressing the protection cover onto the cutter body or the cutter body onto the protection cover; and a biasing member which is configured to exert a biasing force to move the pressing mechanism toward the one side of the hand-held cutter, wherein the hand-held cutter is configured such that moving the pressing mechanism, against the biasing force of the biasing member, toward a side opposite to the one side of the hand-held cutter removes the restrictions on the rotation of the protection cover, characterized in that the pressing mechanism is movable along the rotation shaft by screwing movements, the pressing mechanism includes a rod member of which one end is provided with a screwable portion and the other end is fixed to a manipulation handle manipulatable by an operator, the cutter body includes a screw receiving portion which extends in parallel to the rotation shaft, and in which the screwable portion can be screwed toward and away from the cuter body, the biasing member has one end fixed to the cutter body and the other end fixed to the manipulation handle, and is configured to exert the biasing force in a torsional direction in which the screwable portion is screwed toward the cutter body to cause the rod member to move toward the one side of the hand-held cutter, the manipulation handle extends in a direction perpendicular to the rotation shaft, is in a shape of a lever, and has one end fixed to the other end of the rod member, and the other end configured as a manipulation portion manipulatable by the operator, the cutter body is provided with a grip frame by which the operator can raise the cutter body, the manipulation handle is located near the grip frame, the manipulation portion is positioned above the rod member, and turning the manipulation handle so as to bring the manipulation portion closer to the grip frame causes the rod member to be screwed away from the cutter body. a disc-shaped cutting blade which is configured to rotate about a rotation shaft to cut a target; a cutter body which rotatably supports the cutting blade; a protection cover which is rotatable about the rotation shaft and covers a portion of the cutting blade; a pressing mechanism which is movable in parallel to the rotation shaft, and when positioned close to one side of the hand-held cutter, imposes and maintains restrictions on rotation of the protection cover by pressing the protection cover onto the cutter body or the cutter body onto the protection cover; and a biasing member which is configured to exert a biasing force to move the pressing mechanism toward the one side of the hand-held cutter, wherein the hand-held cutter is configured such that moving the pressing mechanism, against the biasing force of the biasing member, toward a side opposite to the one side of the hand-held cutter removes the restrictions on the rotation of the protection cover, characterized in that the pressing mechanism is movable along the rotation shaft by screwing movements, the pressing mechanism includes a rod member of which one end is provided with a screwable portion and the other end is fixed to a manipulation handle manipulatable by an operator, the cutter body includes a screw receiving portion which extends in parallel to the rotation shaft, and in which the screwable portion can be screwed toward and away from the cuter body, the biasing member has one end fixed to the cutter body and the other end fixed to the manipulation handle, and is configured to exert the biasing force in a torsional direction in which the screwable portion is screwed toward the cutter body to cause the rod member to move toward the one side of the hand-held cutter, the manipulation handle extends in a direction perpendicular to the rotation shaft, is in a shape of a lever, and has one end fixed to the other end of the rod member, and the other end configured as a manipulation portion manipulatable by the operator, the cutter body is provided with a grip frame by which the operator can raise the cutter body, the manipulation handle is located near the grip frame, the manipulation portion is positioned above the rod member, and turning the manipulation handle so as to bring the manipulation portion closer to the grip frame causes the rod member to be screwed away from the cutter body.