Inspection and
Adjustment
Inspection and
Adjustment
4 - 29
Adjustment SS pattern (triple stretch stitch) stitch length
[Standard]
At SS pattern (triple stretch stitch), the stitch length should be the same when sewing
forward and backward.
[Adjustment]
1. Remove the face plate, the pattern selection dial and the front cover.
2. Attach the size 90/14 needle.
3. Attach the pattern selection dial.
4. Turn the
stitch length dial [SS]
is the topmost position.
5. Turn the
pattern selection dial [20]
is the topmost position.
6. Lay a paper on the needle plate, and lower the presser foot lifter to lower the presser foot.
7. Turn the pulley by hand to the direction of the arrow, and drop a few stitches on a paper.
8. Loosen the nut 4 of the adjusting screw.
9. Adjust the needle drop position so that the forward needle drop “C” and the reverse needle drop “D” are the
same by turning the adjusting screw.
*Key point
• Turn the adjusting screw counterclockwise. (Turn to the direction “
a
”.)
→
Reverse stitch length “ f ” is shorter. (Fig. 1 “
a
”)
• Turn the adjusting screw clockwise. (Turn to the direction “
b
”.)
→
Reverse stitch length “ f ” is longer. (Fig. 1 “
b
”)
10. Tighten the nut 4 of the adjusting screw to secure the adjusting screw.
*Key point
• When tightening the nut 4 of the adjusting screw, keep the adjusting screw from moving.
Needle
Presser foot
Paper
Pattern
selection dial
Presser foot lifter
Pulley
Stitch length dial
Adjusting screw
Nut 4
DC
e
e f
f
D
C
e
e f
f
D
C
e
f
NG
Fig. 1
OK
NG
e f
Flat screwdriver
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