Parts Relation And Timing; Needle And Needle Plate - Singer 321C Instruction 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-
cific 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 fig-
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
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