JUKI TL-2200QVP Service Manual & Parts List page 19

2013.3.6 最終校正用
1) Positioning the thread take-up picker
1. With clutch disc 1 pushed in the direction of arrow (to the right), make
adjustment so that the bobbin thread can be pulled out smoothly.
2. The adjustment so that a clearance of 1.0 to 1.5 mm is provided be-
tween the tip of the thread take-up picker 3 (bobbin winder trip latch)
and the middle of the top recess of the bobbin case, and also the rear
end of the bobbin winder trip latch is aligned with the marker line of the
thread take-up picker 3 .
2) how to adjust the position of the thread take-up picker
1. After loosening screws 4 , adjust so that the tip of the thread take-up
picker 3 (bobbin winder trip latch) is positioned, and tighter setscrews
4 .
2. To adjust the entrance of the thread take-up picker 3 into the bobbin
case, picker link pin 2 .
3. After completion of the above adjustment, retighten the nut of the picker
link pin 2 .
4. The standard position of the picker link pin 2 is such that, with the
clutch disc 1 pushed to the right, the end of the picker 3 is the right
side with marker line.
adjustment Procedure results of improper adjustment
17
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○ If thread take-up picker 3
enters the bobbin case too
deeply at the time of thread
trimming, the bobbin does not
turn, and the bobbin thread is
cut too short, causing stitch
skipping at the start of sewing.
○ On the contrary, if the en-
trance of the thread take-up
picker 3 into the bobbin case
is not enough, the needle
thread slips off the tip of the
thread take-up picker at the
time of thread trimming.
As a result, the thread re-
maining on the needle after
trimming becomes too short,
causing the thread to slip off
the needle.