JUKI FLS-350N Series, Руководство инженера

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Adjustment Procedures Results of Improper Adjustment
Adjustment Procedures Results of Improper Adjustment
1) Loosen setscrew
B
. Make the ascending lower feed dog flush
with the throat plate surface by turning the handle.
2) Make the descending upper feed dog engage with the lower feed
dog by turning the coupling to move the eccentric shaft. Then
tighten setscrew
B
.
(Caution) Never loosen setscrew
A
.
™ If the timing is too early, the left
looper fails to scoop a loop.
™
Loosen the screw from underside
of the upper frame.
When the time is too early .....
The material will shift to the left.
™ When the timing is too late :
When the feed completes feeding
the material and the upper feed and
lower feed dogs are moving away
from each other, the presser foot
comes down together with the lower
feed dog.
1) Turn the handle until the left looper is brought to the forward end
position toward you. (250˚ to 255˚)
2) Loosen setscrews
B
, and adjust so that a distance of 5 to 6 mm
is provided between the center of the needle and the left looper
and that a clearance of 0.1 to 0.4 mm is obtained between the
needle and the left looper. After the adjustment, tighten setscrews
B
.
3) Loosen setscrew
A
, and adjust so that a height difference of 3 to
4 mm is provided between the top end of the left looper and the
needle eyelet when the top end of the looper is aligned with the
center of the needle. After the adjustment, tighten setscrew
A
.