Toyota 2D - Page 21

19
Troubleshooting
1. Needle and
needle plate
Needle
sideways
movement
<Condition>
<SD>
Pattern selection dial: "11"
<2D>
Pattern selection dial: "7"
<3D>
Pattern selection dial: "3"
Stitch width lever: "5"
<Diagnosis>
When the needle travels from left to right,
measure the distance (A) from the surface
of needle plate to the needle point.
<SD, 2D>
A = 5 to 7 mm
<3D>
A = 3 to 5 mm
[Adjustment]
page.32
2. Upper
thread
tension dial
Upper
thread
tension
<Condition>
Upper thread tension dial: "5"
Thread: Cotton yarn # 60
<Diagnosis>
Pass the upper thread from the spool of
thread to the thread guide, pull the thread
vertically and measure the tension (A)
when the value has stabilized.
(Using a measuring instrument)
A = 0.85 to 1.15
N
[Adjustment]
page.33
Step Item Diagnosing Method Standard
Reference
Page