Thread: Vintage Sewing Machine Shop.....Come on in and sit a spell
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Old 07-29-2011, 01:25 PM
  #20984  
QuiltnCowgirl
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Originally Posted by lee231
On my 15-91, what is the extra knob left of the stitch length lever for?
That is the stitch regulator screw. You use it to adjust and hold the lever to the right of it at the stitch length you want.
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