Brother KE-430F Series, Service Manual, Page: 120 / 184

11. ADJUSTMENT
110 KE-430F, BE-438F
11-8. Adjusting the position of the movable knife
1. Remove the top cover and the side cover.
2. Turn the pulley by hand in the direction of the arrow to move the needle bar to its lowest position, and then turn the cam
shaft (1) so that the thread trimmer collar (2) goes into the groove in the thread trimmer cam (3).
3. Tilt back the machine head.
4. With the thread trimmer collar (2) inserted into the groove of the thread trimmer cam (3), turn the pulley by hand in the
direction of the arrow to set the thread trimmer driving lever (4) to the reverse position (when the thread take-up (5) is close
to its lowest position).
5. Loosen the bolt (6).
6. Move thread trimmer rod H assembly(7) back and forth to adjust so that the ridge line on the movable knife (8) is touching
the edge of the index mark (9), and then while keeping the parts in this position, tighten the bolt (6).
7. Turn the pulley so that the thread trimmer driving lever (4) is in the reverse position, and then while pushing thread trimmer
rod V assembly (10) in the direction of the arrow so that the thread trimmer collar (2) is touching the inside of the thread
trimmer cam (3), check if the ridge line on the movable knife (8) is touching the edge of the index mark (9).
8. Return the machine head to its original position, and then install the top cover and the side cover.
<Thread trimmer cam seen from the side>
2732B
2733B
Reverse position
2734B
2958B
Touching