A starter comprising: a starter case; a rotational torque applying unit (3, 6) provided in the starter case and configured to generate a rotational torque; a torque-accumulation spring configured to accumulate the rotational torque applied from the rotation torque applying unit (3, 6); a rotating member provided in the starter case and configured to receive the rotational torque from the torque-accumulation spring; a driving pulley connected to an engine, configured to be engaged/disengaged with the rotating member and having a support shaft; and a rotation regulating mechanism including: a regulating ratchet provided on the support shaft of the driving pulley at a position shifted from a rotation center thereof; and a pressing unit provided on the starter case and urged by a given resilient pressing force to be engaged with the regulating ratchet, wherein, when the rotational torque accumulated in the torque-accumulation spring exceeds the given resilient pressing force, the driving pulley urges back the pressing unit via the regulating ratchet so that the regulating ratchet is disengaged from the pressing unit, to thereby release the rotational torque, wherein, when the driving pulley is rotated, the regulating ratchet is held in a position where the regulating ratchet is not engaged with the pressing unit due to a centrifugal force, and characterized by a torsion coil spring wound on the support shaft, and in that, when the driving pulley is stopped, the regulating ratchet is rotated by the resilient force of the torsion coil spring for returning to a position where the regulating ratchet is engaged with the pressing unit. a starter case; a rotational torque applying unit (3, 6) provided in the starter case and configured to generate a rotational torque; a torque-accumulation spring configured to accumulate the rotational torque applied from the rotation torque applying unit (3, 6); a rotating member provided in the starter case and configured to receive the rotational torque from the torque-accumulation spring; a driving pulley connected to an engine, configured to be engaged/disengaged with the rotating member and having a support shaft; and a rotation regulating mechanism including: a regulating ratchet provided on the support shaft of the driving pulley at a position shifted from a rotation center thereof; and a pressing unit provided on the starter case and urged by a given resilient pressing force to be engaged with the regulating ratchet, wherein, when the rotational torque accumulated in the torque-accumulation spring exceeds the given resilient pressing force, the driving pulley urges back the pressing unit via the regulating ratchet so that the regulating ratchet is disengaged from the pressing unit, to thereby release the rotational torque, wherein, when the driving pulley is rotated, the regulating ratchet is held in a position where the regulating ratchet is not engaged with the pressing unit due to a centrifugal force, and characterized by a torsion coil spring wound on the support shaft, and in that, when the driving pulley is stopped, the regulating ratchet is rotated by the resilient force of the torsion coil spring for returning to a position where the regulating ratchet is engaged with the pressing unit. a regulating ratchet provided on the support shaft of the driving pulley at a position shifted from a rotation center thereof; and a pressing unit provided on the starter case and urged by a given resilient pressing force to be engaged with the regulating ratchet, wherein, when the rotational torque accumulated in the torque-accumulation spring exceeds the given resilient pressing force, the driving pulley urges back the pressing unit via the regulating ratchet so that the regulating ratchet is disengaged from the pressing unit, to thereby release the rotational torque, wherein, when the driving pulley is rotated, the regulating ratchet is held in a position where the regulating ratchet is not engaged with the pressing unit due to a centrifugal force, and characterized by a torsion coil spring wound on the support shaft, and in that, when the driving pulley is stopped, the regulating ratchet is rotated by the resilient force of the torsion coil spring for returning to a position where the regulating ratchet is engaged with the pressing unit.