Buttonhole Sewing - Toyota SD Service Manual

12.Buttonhole sewing

Difference of stitches at right and left
[Condition]
Presser foot: Buttonhole foot
Buttonhole stitch adjuster: Center
<SD>
Pattern selection dial: "1" to "4"
<2D>
Pattern selection dial: "11" to "14"
<3D>
Pattern selection dial: "8"
[Diagnosis]
1. When about 50 stitches have been stitched
each at right and left sides of buttonhole,
measure the difference of stitches at right and
left.(Fig. 1)
[Standard]
Left: 35 stitches, standard
Right: 30 to 41 stitches
Feeding amounts are nearly the same at right
and left (Fig. 1)
* Make adjustment if the diagnosis result fails to
meet the standard.
[Adjustment]
1. Remove the external panels and others to
see the adjusting section. (See:page.45)
2. Turn the adjustment screw, eliminate the
difference of stitch numbers at right and left.
(SD: Fig. 2, 2D/3D: Fig. 3)
When the stitches at left is coarser than the
right, turn the screw to right.
When the stitches at right is coarser than the
left, turn the screw to left.
* Repeat the adjustment till the standard is met.
Differential width at right and left
(SD, 2D only)
[Condition]
Presser foot: Buttonhole foot
Buttonhole stitch adjuster: Center
<SD>
Pattern selection dial: "1" to "4"
<2D>
Pattern selection dial: "11" to "14"
[Diagnosis]
1. When about 50 stitches have been stitched
each at right and left sides of buttonhole,
measure the difference of stitch width at right
and left.(Fig. 4)
Adjustment of respective parts
39