fig. 1-1
fig. 1-2
fig. 1-3
a
5.2
±
0.2 mm
b
- 5 -
1. HEIGHT OF NEEDLE BAR
Height of needle bar could be the cause for stitches to
skip. Check as the following procedures.
1. Set the pattern number at “2” which is straight stitch on
center needle position.
2. Raise the needle bar to its highest point by turning the
handwheel toward you. Remove the presser foot.
Remove the set screw (a) and needle plate. Lift up the
bobbin holder and remove it. (fig. 1-1)
3. Turn the handwheel toward you until the needle comes
to its lowest point.
Then, the spacing between the surface of hook race
and the top edge of needle eye must be 5.2
±
0.2 mm.
(fig. 1-2)
(= Turn the handwheel until the top edge of needle eye
is aligned with the surface of hook race, at this time the
needle bar should be rising 5.2
±
0.2 mm from its lowest
point.)
If this spacing is not correct, adjust as follows.
4. Remove the light cover.
5. Lower the needle to its lowest point by turning the
handwheel.
6. Loosen (not remove) the screw (b) on the needle bar
holder. (fig. 1-3)
Raise the needle bar until the needle eye is aligned
with the hook race. Then, lower the needle bar 5.2 mm
and re-tighten the screw (b).
CAUTION: DO NOT change the needle bar direction at
this adjustment. The long groove of needle must be
facing frontwards.
