Liebersew 737 - Upper Looper and Needle; Lower Looper and Needle; Upper Looper and Lower Lopper; Needle and Needle Guard

2.
Upper
Looper
(Spreader)
and
Needle
Fig.13
When the Upper
(spreader)
moves
to the
extremely
left,
the distance
between the
point
of
looper
(spreader)
and center
line of
needle
is
4.5-5.0,
for
I needle
(spreader)
to center
line
of
left needle is
5.5-6.0mm for 2
needle machine.
A: 4.5-5.0
B: 5.S.0
Fig.l3
3.
Lower
Looper and Needle
Fig.14
15
When the lower looper
moves to the
extremely
left,
the distance between
looper
point
and
center line
of
needle
(left
needle if 2 needle)
is
3.4-3..6mm
for
high
lift machine.
When the
lower
looper
moves to
the center line of
needle
(eft
needle
if 2
needle)
the
gap
beween needle and
looper is 04.05mm.
4.
Upper
Looper
and
Lower Lopper
Fig.16
When
the
Upper
and l,ower l-ooper
is crossed.
5. Needle and eedle
Guard
Fig.17
When
the Lower
Looper
point is opposite
the center
line
of
Needle
(left
needle if 2 needle), the
gap
between
Needle and rcar
Needle Guard
A
is Omm. When
Needle
moves to the lowest
position, the
gap
between
Needle and front Needle
guard
B if 0.15-0.2mm.
6. Chain
Looper and eedle
Fig.18
The
Chain
Looper
must
be fixed
into
the
lowest
pgsition
of
is
holder and when the Chain
Looper
moves
the the
extremely
left,
the distance
between
the looper
point
and center
line
of needle
is
2.5mm.
d
d
o
g
o
I
o
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