JUKI AMS-221EHL, Руководство пользователя

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1. If the dimensions of 0.3 x 8mm are not secured, retouching is re-
quired with the aid of an oil stone.
1) Stroke adjustment
Loosen the setscrew , and turn the thread tension assembly .
Turning it clockwise increases the movable distance and thread draw-
ing amount.
2) Adjustment of thread take-up spring tension
Turn the thread tension post using a thin driver with the setscrew
tightened to adjust the thread take-up spring tension. Turning
it clockwise increases the thread take-up spring tension, and turn
it counterclockwise decreases the tension.
(Caution) Set the stroke of the thread take-up spring shorter
for thin threads with thread number #50 or higher.
o If the stroke of the thread take-up
spring is larger than the specified
value:
Length of remaining needle
thread is shortened, causing the
needle thread to slip off the needle
at the sewing start.
o If the stroke of the thread take-up
spring is smaller than the speci-
fied value:
Needle thread breakage will oc-
cur at the time of thread trimming
when using a thin thread.
(Caution)
If the thread take-up spring
interferes with the L-shaped
thread guide
, the thread take-
up spring may fail to return to
the initial position before thread
trimming, and the length of re-
maining needle thread may be
short. If such a trouble occurs,
bend the section
C C
C C
C
of the thread
take-up spring to widen the
clearance
B B
B B B
.
Adjustment Procedures Results of Improper Adjustment
Adjustment Procedures Results of Improper Adjustment
Part No. Name of part Remarks
0.8 14103253 Shuttle race ring A Optional
1.3 14103352 Shuttle race ring B Standard
1.7 14103659 Shuttle race ring C Optional
1.9 B1817210DAD Shuttle race ring D Optional
Dimension A
(mm)