Singer 321C - Parts Relation and Timing; Needle and Needle Plate

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High Speed Overlock Machine | Instructions Manual and Parts List
3.9
Parts Relation
and Timing
3.9.1
Needle and
Needle Plate
When needle at the highest posi-
tion, distance ‘A’ between needle
point (the left needle if there are
two needles) and needle plate is
9.5to9.7mmforstandardadjust-
ment, or 10.8 to 11.0 mm for spe-
ciccases.Eachneedleshouldbe
centralized over each hole in the
needleplate.Therightneedlemust
beabout0.2to0.3mmaheadthe
leftneedle.
Distancebetweenneedlepoint(the
right needle if there are two nee-
dles)andthefrontpartofthehole
intheneedleplateorpresserfoot
is1.2mm.
Releasescrew‘1’,asshownong-
ure16.
Turn the wheel to see if needle is
centralized at every hole of the
needle plate. Release screw ‘2’ to
adjustneedleholder.
Turnthe wheeltomoveneedleto
thehighestpositionandmovenee-
dlebaruntiltheheightiscorrectly
adjusted.
Tightenscrews‘1’ and‘2’.
Figure 16