Skip Stitch - Toyota SD Service Manual

2.Skip stitch

[Example of phenomenon]
Step Item
Needle bar
height
1. Needle and
hook
Needle bar
direction
Is home-use sewing machine needle (HA × 1)used?
Is the needle installed correctly?
Is the needle bent?
Is the combination of needle and thread adequate for the
fabric?
Is the upper thread threaded properly?
Diagnosing Method
<Condition>
Needle: # 14
<Diagnosis>
Remove the extension table, and open the
shuttle cover.
When the needle bar is brought to the low-
er dead point by rotating the handweel,
measure the clearance (A) between the
needle point and the shuttle hook center.
<Diagnosis>
Remove the face cover.
Check the needle clamp position.
When seeing from the top, measure the
angle (A) in the figure.
[Check item before adjustment]
7
Troubleshooting
Reference
Standard
Page
A = 11.2 ± 0.2 [Adjustment]
mm page.24
Needle clamp
position:
Just beside
[Remove]
when seeing
page.45
from the top
[Adjustment]
(right side see-
page.24
ing from the
front)
A= 0° to 1.5°