Upper Looper (Spreader) And Needle; Lower Looper And Needle - Singer 321C 131M-04 Instruction Manual

Upper Looper
(Spreader)
and Needle
3.9.3
Lower Looper
and Needle
When the right looper moves to the needle. For two needles, the dis-
far left end, distance fl'between the tance 'B' is 5.5 to 6.0 mm from the
looper point and the center line of left need/e, as shown on figure 12
the needle is 4.5 to 5.0 mm for one
Figure 17
When the lower looper moves to
When the lower looper moves to
the extremly left, the distance 14'
the center line of needle (left nee-
between looper point and center
die, if two needles), the gap be-
line of the needle (left needle, if tween needle and looper is from 0
two needles) is from 3.4 to 3.6 mm, to 0.05 mm, as shown on figure 19.
for high lift machines, as shown on
figure 18.
E
E
(m
0 ©
"8'
:i;—:
i—f_
Figure 19
A
Figure 18
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