Yoke-Slide Timing; The Floating Timing Of Thread Tension Disc No.2 - JUKI MB-1373 Engineer's Manual

(3) Yoke-slide timing

1. Crosswise travel timing of the yoke slide
The height of ascending needle bar
right.
2. Lengthwise travel timing of the yoke slide
The yoke slide
the blade point of the looper has passed the thread
triangle. For the triangle movement of yoke
good for yoke
3. Lengthwise positioning of the yoke slide
Position the yoke slide so that the blade point of the
looper passes through the center of the thread
triangle.
(For four-holed buttons: Adjust so that the looper
blade point passes through the thread triangle at 9
th
to 10 stitches.)

(4) The floating timing of thread tension disc No.2

The height of needle bar
Phenomenon
1. Thread is poorly tensed on the wrong side of the fabric.
2. Thread breaks halfway at the time of stop-motion.
3. Thread frequently breaks.
The floating start timing is
when the thread tension is
released while the needle
bar ascends.
Standard Adjustment
should be 4 to 7 mm when yoke slide
Looper
begins to go back immediately after
to go back like a slant line.
Standard Adjustment
at the floating timing of thread tension disc No. 2 should be 44 to 47 mm.
A
Engraved marks
, it is
th
Tension release bar height
Slightly increase the height.
Slightly decrease the height.
Slightly decrease the height.
B
– 4 –
begins to travel from left to
0.05 to 0.1mm
Blade point of looper