Timing Of The Hook - Singer 9985 Service Manual

3. TIMING OF THE HOOK

Prior to making this adjustment, be sure that the needle
bar is set at the correct height. (Sec. 1)
Check the timing of hook as follows:
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 is at
its lowest point.
4. Then, turn the handwheel slowly to turn the hook
counter-clockwise until the tip of hook is aligned with
the right side of needle.
At this time, the gap between the tip of hook and the
top edge of needle eye should be (1.3±0.2 mm).
If the gap is too small or too large, adjust as follows:
5. Remove the front enclosure.
6. Loosen the two 2 screws (a) on the lower shaft gear
with a 2.5 mm hex. wrench.
7. Turn the hook race by hand so that the tip of hook will
align with the right side of needle.
8. In this position, hold the hook race with your left hand
and turn the handwheel toward you to obtain the
correct gap (1.3 mm).
9. Tighten the screws and check the timing again.
10.Replace the front enclosure.
1
2
4
1.3±0.2 mm
6
SERVICE MANUAL
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