Abstract: An apparatus for preventing cutting of a spiral spring for an engine starter includes a rope reel to be rotated by a rope rounded thereon, a spiral spring to be wound up by the rope reel in order to accumulate a power therein, an engine starting pulley driven by the power accumulated in the spiral spring, and a device for preventing the spiral spring from being cut due to an overwinding. The device has a projection which projects from an outer peripheral surface of the engine starting pulley when the spiral spring is wound up fully by the rope reel and an outer diameter of the spiral spring is reduced, and an engaging device which is provided on the rope reel and which engages the projection.

Abstract: An engine starter includes a rope reel to be rotated by a rope rounded thereon, a first spiral spring for recoiling and a second spiral spring for engine starting, both of the first and second springs being wound up by the rotation of the rope reel in order to accumulate a power therein, an engine starting pulley to be driven by the power accumulated in the second spiral spring, and a brake that suppresses rotation of the rope reel when the rotary speed of the rope reel at the recoiling is increased more than a predetermined value. The brake has a moving element that is moved by a centrifugal force generated by the rotation of the rope reel.

Abstract: An engine starter includes a reel to be rotated by a rope wound around the reel, first and second springs, both of which being wound up by the rotation of the reel, an engine starting pulley to be rotated by the second spring for driving a crank shaft of an engine, and a centrifugal clutch inserted between the engine starting pulley and the crank shaft of the engine. A spring force accumulated in the second spring is dwindled into zero when the rope is recoiled around the reel by the first and the second springs.