Upper Looper (Spreader) And Needle; Lower Looper And Needle - Singer 321C Instruction Manual And Parts List

High speed overlock machine
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3.9.2
Upper Looper
(Spreader)
and Needle
3.9.3
Lower Looper
and Needle
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When the right looper moves to the
far left end, distance 'A' between the
looper point and the center line of
the needle is 4.5 to 5.0 mm for one
When the lower looper moves to
the extremly left, the distance 'A'
between looper point and center
line of the needle (left needle, if
two needles) is from 3.4 to 3.6 mm,
for high lift machines, as shown on
figure 18.
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Figure 17
Figure 18
High Speed Overlock Machine
needle. For two needles, the dis-
tance 'B' is 5.5 to 6.0 mm from the
left needle, as shown on figure 17.
When the lower looper moves to
the center line of needle (left nee-
dle, if two needles), the gap be-
tween needle and looper is from 0
to 0.05 mm, as shown on figure 19.
Figure 19
|
Instructions Manual and Parts List
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