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1. Adjustment of longitudinal movement of differential feed looper
(1) Loosen the setscrews (4 pcs.) and remove the cylinder side cover
.
(2) Loosen the setscrew of the ball joint with a spanner wrench
(TT85), and adjust the the forward/reverse movement by moving
the setscrew forward or backward.
(3) After adjustments, mount the cylinder side cover , and tighten the
setscrews .
2. Adjustment of longitudinal movement of 1 piece feed looper
(1) Loosen the setscrews (4 pcs.) and remove the cylinder side cover
.
(2) Loosen the setscrew of the ball joint with a screwdriver, and
adjust the the forward/reverse movement by moving the setscrew
forward or backward.
(3) After adjustments, mount the cylinder side cover , and tighten the
setscrews .
o When reducing the front and rear momentum amount of the looper,
move the ball joints and upwards.
o When increasing the front and rear momentum amount of the looper,
move the ball joints and downwards.
(Caution) 1. When the front and rear momentum amount of the
looper has been adjusted, move the respective looper
bases , , and and readjust the front/rear
positions of the needles ( , , and ) and the
loopers ( , , and ).
2. When the above-mentioned adjustments are carried
out, the throat plate should be removed.
o When the front and rear momentum
amount of the looper is small:
The amount of contact becomes
large between tips of the needles
( , , and ) and rear parts of
the loopers ( , , and ) and
this can be a cause of needle tip
being blunt.
o When the front and rear momentum
amount of the looper is large:
The clearance becomes large
between tips of the needles ( ,
, and ) and rear parts of the
loopers ( , , and ) and this
can be a cause of stitch skipping.
Adjustment Procedures Results of Improper Adjustment
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