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Singer 321C - Lower Looper and Needle; Upper Looper (Spreader) and Needle

Singer 321C
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14
High Speed Overlock Machine | Instructions Manual and Parts List
Figure 18
Figure 19
3.9.2
Upper Looper
(Spreader)
and Needle
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
needle. For two needles, the dis-
tance‘B’ is5.5to6.0mmfromthe
leftneedle,asshownongure17.
3.9.3
Lower Looper
and Needle
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
gure18.
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gure19.
Figure 17

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