fig. 2-1
fig. 2-2
0.02-0.1 mm
fig. 2-3
fig. 2-4
a
- 6 -
2. GAP BETWEEN NEEDLE AND
HOOK
If the needle hits aginst the hook, it may be the cause of
needle and thread breakages. If the gap between needle
and hook is too big, it will cause to skip stitches. Check
and adjust as follows:
Prior to make this adjustment, check that the needle is not
bent and the needle is inserted correctly.
1. Remove the needle plate and bobbin holder. (See Sec.
1-2)
2. Set the pattern number at “1” . (Straight stitch on left
needle position)
3. Turn the handwheel toward you until the needle will
cross over the hook. (fig 2-1)
Then, check the gap between needle and hook is
about 0.02 to 0.1 mm. (fig. 2-2)
If the needle is hitting against the hook or if the gap is too
much, adjust as follows:
4. Remove the light cover.
5. Remove the cap on the back side of machine. (fig. 2-3)
6. Loosen (do not remove) the lock screw with a hexagon
socket screw key (3 mm). (fig.2-4)
Adjust the gap by turning the adjusting nut (a) with an
open ended spanner (10 mm).
- If the gap is too big, turn the nut upward.
- If the needle is hitting the hook, turn the nut
downward.
When correct gap is obtained, hold the nut and
retighten the lock screw. Check the gap again.
7. Replace the cap and light cover. Replace the bobbin
holder and needle plate.
