3 - 8
Adjustment
8. Adjustment of the zigzag width for BH Right Over Edging
• The zigzag width for BH right over edging should be so that the difference with the zigzag width of BH left
over edging (BH b) is 0.2 mm or less.
1
Attach a J presser foot, lower the presser lever, and attach a cover.
2
Turn the selection dial to select the BH left over edging (BH b).
3
Attach a BH presser foot.
4
Hold a piece of paper by hand and turn the pulley to pierce the paper with the tip of the needle.
5
While holding the piece of paper by hand, turn the selection dial to select the BH right over edging (BH d).
6
Hold the piece of paper by hand and turn the pulley to pierce the paper with the tip of the needle.
7
Check the zigzag width of right over edging against that of left over edging.
8
Loosen the screw (Screw, pan M 3
×
8) of the adjusting nut. (Lower right screw)
9
Turn the adjusting nut with a spanner to adjust the zigzag width of right over edging to make it equal to that
of left over edging.
0
Tighten the screw (Screw, pan M 3
×
8) of the adjusting nut.
A
Repeat steps
1
through
5
above to check the zigzag width again.
;
a
b
| a - b |
≤ 0.2
mm
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