THE BACK BOBBIN IS FITTED IN THE SAME WAY AS THE FRONT BOBBIN ,BUT HAS A SMALL GEAR WHEEL FITTED,THIS TURNS THE RIBBON VERY SLOWLY AS THE TICKET IS ISSUED THE SPRING LOADED PIVOT AT THE BOTTOM OF THE BOBBIN NEEDS TO BE COMPRESSED AT BOTH ENDS,(NEARLY FLUSH WITH THE MACHINE BODY PLATES) TO RE FIT
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