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Adjustment Procedures
1. Mounting position of needle thread adjusting path
(1) Mount the needle thread path guide
.
(2) Mount the needle thread adjusting path
guide
.
Measure the standard dimension (27mm) and tighten the setscrew
.
o Raising the needle thread adjusting path
to be loosened.
o Lowering the needle thread adjusting path
thread to be tightened.
2. Mounting position for the rocking thread take-up lever thread path
(1) When the needle bar is positioned at the upper dead point, vertically
hold the rocking thread take-up lever thread path
the standard dimension (15mm). Tighten the setscrew
3. Mounting position of needle thread guide adjuster
(1) Let the lever thread path
(2) Loosen two setscrews
and move the needle thread holding adjuster
the standard dimension (1.5mm) and fasten two setscrews
o Lowering the needle thread holder adjusting pin
thread loop to be enlarged.
o Lowering the needle thread holder adjusting pin
thread loop to be diminished.
(Caution) When the two setscrews
thread holding adjuster
possible to change the height of "G" and that of "H."
, and tighten the setscrew
in the needle thread path
causes the needle thread
causes the needle
stay at the lower dead point.
of the needle thread holding adjuster
vertically. Measure
causes the needle
causes the needle
are loosened and the needle
is moved vertically, it is
– 39 –
Results of Improper Adjustment
o If there is no coincidence between
position of each thread path
and that of the needle thread
holding adjuster
cause of problems such as stitch
skipping, thread breakage, and
worse tightening of the needle
thread.
and measure
.
.
/
, this can be a
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