Gap Between Needle And Hook - Singer 9920 Service Manual

2. GAP BETWEEN NEEDLE AND HOOK

If the needle hits against 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.
2. Set the pattern at [Utility No. 2]. (Straight stitch on left
needle position.)
3. Turn the handwheel toward you until the needle will
cross over the hook.
4. Then, check the gap between needle and hook is
about 0.10 to 0.20 mm.
If the needle is hitting against the hook or if the gap is
too much, adjust as follows:
5. Remove the light cover.
6. Adjust the gap by turning the adjusting screw (a) with
2 mm hex. wrench.
• If the gap is too big, turn the screw to the left with
viewing from frontward.
• If the needle is hitting the hook, turn the screw to the
right with viewing from frontward.
7. Replace the bobbin holder and needle plate and light
cover.
1
3
4
View from
upward
0.10-0.20 mm
6
a
SERVICE MANUAL
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