−4 −
Standard Adjustment
(3) Timing the travel of the yoke slide
1) Crosswise travel timing of the yoke slide
The height of the ascending needle bar when the yoke slide
advances and begins to travel from the left to righgt is as
shown in the table below.
2) Lengthwise travel timing of the yoke slide
The yoke slide begins to go back immediately after the
blade point of the looper has passed the thread triangle.
And, it is good for the looper to go back like a slant line of
the movement of the triangle.
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. (Use a 4-
hole button, 9 or 10 stitches for positioning.)
Model
MB-373
MB-377
Thread
Cotton #50
Tetoron #20
Needle
TQ x 7
TQ x 7
TQ x 1
TQ x 7
Needle bar height
14 to 17 mm
14 to 18 mm
4 to 8 mm
14 to 18 mm
14 to 17 mm
Needle bar
Blade point of looper
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