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By Len Harrison
#92079
I have a 1935 Royal Enfield 500 J motorcycle gearbox problem I can select 1st, Neutral, 2nd & 3rd but when I try for 4th it goes half way and jams the gears. I have stripped and checked all the gears and they move easily on the shafts, also no gears are pitted or have bad teeth, the selector movement is correct

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