SunStar KM-380BL, User Manual

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9) Adjusting sub presser foot and upper feed presser foot
KM-380BL/390BL
It is normal that both auxiliary presser feet and upper feed presser foot more up and down to the same height.
Take the following steps either to adjust the stroke of both to be the same or to make one of the two adjusted lower or higher,
depending on sewing materials.
A. Adjusting the strokes of both to be the same.
a. The vertical running range of the sub presser foot and the upper feed presser foot is from 2 to 5.5 mm.
b. Loosen the nut to adjust vertically in accordance with material’s condition. (Refer to Figure 18)
(Placing the nut to upper position makes the movement bigger, and to lower position to make it smaller.)
c. When adjustment is complete, make sure the timing adjustment state explained in the article 10 of page 16.
a. Adjusting the sub presser foot
- Loosen the presser bar pressure adjustment screw in Figure 16 on page 14 and the bracket fixing screw in Figure 19.
- Adjust vertically the bracket fixing screw so that the sub presser foot goes up by 10mm from the upper side of the
needle plate when the presser bar lifter is up.
- When the adjustment is finished, fix tightly the bracket fixing screw and adjust adequately the pressure adjustment screw.
- After adjusting the sub presser foot height, adjust the upper feed presser foot.
b. Adjusting the upper feed presser foot
- With the presser bar lifter is put, loosen the crank fastening screw and place the needle at the highest point.
- Adjust up and down the upper feed foot presser height in accordance with material.
- When the adjustment is finished, fix tightly the clamp fixing screw , and make sure the timing adjustment state explained
in the article 10 of page 16.
B. In case of adjusting differently the movement of the sub presser foot and the upper feed presser foot
[Figure 18]
[Figure 19]