Adjusting the position of the movable knife (Brother BAS-326G)

  1. Remove the top cover and the solenoid cover, and then tilt back the machine head.
  2. Turn the pulley (1) by hand to lower the needle bar to its lowest position, and push the thread trimmer solenoid (2) as far sa it will go.
  3. With the collar (3) inserted into the groove of the thread trimmer camp (4), turn the pulley (1) by hand to set the driving lever (5) to the reverse position (When the take-up (6) is close to its lowest position  
  4. Loosen the bolt (7)
  5. Move the thread trimmer rod H (9) forward or back to adjust so that the ridge line on the movable knife (8) and reference line (A) on the needle plate are aligned.
  6. After tightening the bolt (7), check the above position once more.
  7. Turn the pulley (1) by hand to move the needle bar to its lowest position.  
  8. Loosen the four bolts (10) and the nut (11) until the thread trimmer roller (3) is within the groove in the thread trimmer cam (4). After this, tighten the set screw (12) until the thread trimmer roller (3) is touching the inside of the groove in the thread trimmer camp (4) and then turn it back in the counterclockwise direction by approximately ¼ of turn. Then tighten the nut (11).
  9. Slide solenoid setting plate U (15) in the direction of the arrow until it pushes against the cover (13) of thread trimmer solenoid B and the cushion (14), and then tighten the four bolts (10).
  10. Loosen the nut (11) once more and then turn the set screw (12) a further ¼ of a turn in the counterclockwise direction.
  11. Tighten the nut (11), and then check that the collar (3) is not touching the inside of the groove in the thread trimmer cam (4). In addition, push the driving lever (5) by hand toward the thread trimmer cam (4) until the collar (3) touching the groove of the thread trimmer cam (4), and then check that the driving lever (5) returns smoothly to its original position when it is released. 
  12. Check that there is a gap of about 8.5 – 9.5 mm between the tip of the movable knife (8) and the center of the hole in the needle hole plate (16 ) when there is still play between the parts.

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