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(15) Adjustment of needle thread path
Adjustment of needle thread path
The needle thread adjusting thread path is installed just under the needle thread guide so that there
is no sag of the needle thread that passes through the lever thread path from the needle thread adjusting
thread path when the needle bar is positioned at the upper dead point.
1) Height of needle thread adjusting path
The standard dimension is 27mm from the hole bottom "A" of the needle thread guide to the hole
bottom "B" of the needle thread adjusting thread path .
When tightening the needle thread in particular, the dimension shall be 36mm from the hole bottom "C"
of the needle thread guide to the hole bottom "D" of the needle thread adjusting thread path .
2) Height of rocking take-up path
The standard dimension is 15mm from the hole bottom "E" of the rocking thread take-up lever thread
path to the center "F" of the setscrew .
3) Height of needle thread guide adjuster
When the needle bar stays at the lower dead point, the standard dimension is 1.6mm from the upper
end "G" of the lever thread path to the upper end "H" of the needle thread holding adjuster .
Rocking thread take-up lever
Needle bar at the
upper dead point
Needle bar at the lower dead point
H
G
1.6mm1.6mm
1.6mm1.6mm
1.6mm
E
F
15mm
A
B
27mm
C
D
36mm
Standard dimension
Standard dimension
Standard dimension for tightening
the needle thread
Standard Adjustment
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