Newlong DS-9C - Adjustment for Single Thread Sewing; Fixing Throat Plate Thread Retainer; Clearance between Needle and Looper; Adjustment between Looper and Throat Plate

5.
Adjusting/ffi
W.
7. Adjustment
for Single Thread Sewing
a)
Fixing Throat Plate Thread
Retainer
(Fie.l5)
Fix
Throat
Plate Thread Retainer
@
at Throat Plate
@
with
Screw
@,
keepins
its
point
havins
0-0.3mm
clearanee
from Needle center.
b) Clearance
between
Needle and Looper
(Fis.16)
Tum the
pulley
in the forward direction
and adjust
the
bell
crank
so
that
the
end ofthe looper
is 7.5mm
away
from
the
needle center when the
needle
is
in the
most
retracted
position.
The
distance between
the
nut
(outside)
of
Looper
Connecting
Rod must be 39.5t0.3mm.
Upon completion
ofthe
adjustment,
tighten the screw of
tSe,bell crank.
c)
Adjustment
between Looper
and Throat Plate
Thread
Retainer
(Fig.17)
Adjust Throat
Plate Thread Retainer
with Looper
Connecting
Rod, keeping it not
touching concave
part
of
Looper when Looper
pass
through the nearest
position
A
from Throat
Plate.
o
When
the test to run, if the thread does
not slip out
smoothly
from
Throat
Piate Thread Retainer,
adjust
keeping
its
point
having
0-0.5mm from Needle center.
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12
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