Toyota 2D - Page 11

9
Troubleshooting
2. Needle and
upper
plate
spring
Clearance
between
needle and
upper plate
spring
<Condition>
<SD>
Pattern selection dial: "11"
<2D>
Pattern selection dial: "7"
<3D>
Pattern selection dial: "3"
Stitch width lever: "5"
<Diagnosis>
When the needle bar is brought to the low-
er dead point at the right side by rotating
the handweel, measure the clearance
(A, B) between the needle and the upper
plate spring.
A = 0.5 to 1.2
mm
B = 0.5 to 1.0
mm
[Adjustment]
page.28
3. Motor belt
Motor belt
tension
<Diagnosis>
Remove external panels and others.
When pressing the center of motor belt
with a force of 3N, measure the depth of
flexure (A) on the belt.
A = 7.0 to 9.0
mm
[Remove]
page.45
[Adjustment]
page.43
Step Item Diagnosing Method Standard
Reference
Page