In the planet gear type speed reduction starter of the invention, the internal gear of resin is arranged inside {HEAD ~ the casing} or a metal ring fitted in {TAIL ~ the casing} with a predetermined gap between the internal gear and the casing or the metal ring in the radial direction, to absorb a shock in a predetermined range 
fitted in
In the planet gear type speed reduction starter of the invention , the internal gear of resin is arranged inside { HEAD ~ the casing } or a metal ring fitted in { TAIL ~ the casing } with a predetermined gap between the internal gear and the casing or the metal ring in the radial direction , to absorb a shock in a predetermined range
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