An ignition operation actuator including a drive section, a flexible shaft rotationally driven by the drive section, and an operation section on a tip end portion of the flexible shaft, the operation section including a press button that presses a push-type ignition, a motion conversion mechanism, and a holder to which the press button and a motion conversion mechanism are mounted, the motion conversion mechanism including a cam that is rotated about a rotation shaft so as to press a cam engagement portion disposed on a back face side of the push-type ignition, wherein the tip end portion of the flexible shaft is detachably connected to an adapter disposed on the holder, and rotation of the flexible shaft is transmitted to the rotation shaft of the cam via a rotation transmission mechanism.