28
Setscrew
⇔
Hexagonal 
socket screw
Mechanical adjustment
Buttonhole lever
Buttonhole 
lever guide
Buttonhole lever
Buttonhole 
lever guide
Setscrew
Hexagonal socket screw
1.6 mm
Slider
Stopper
Buttonhole foot (R)
1.  Turn the power switch ON while pressing the Start/
  Stop button and the Reverse stitch button. The LCD 
  shows the Factory Setting Mode. Press “BH Sensor” 
  key.
2.  Open the face cover. Lower the Buttonhole lever.
  Loosen the setscrew on the buttonhole lever guide.
  Move the buttonhole lever guide to the left to adjust 
  the position. Tighten the setscrew when the indication 
  below "BH Sen" changes from “H” to “L”.
3.  Attach the automatic buttonhole foot (R). Insert a 1.6 
  mm thick spacer between the stopper and slider of the 
 foot.
4.  Press the presser foot lifter button to lower the 
  automatic buttonhole foot (R). Lower the buttonhole 
 lever.
5.  Turn the hexagonal socket screw counterclockwise 
  (use an Allen wrench of 2 mm width across ats) until 
  the indication below "BH Sen" shows “H”.
  Turn the setscrew slowly clockwise until the 
  indication changes to "L".