Page 34
HQ Sweet Sixteen Service Manual
11. Adjustment of the Stop-fi nger
Tools required: (2.5 mm handle Allen)
Check:
The engagement of the stop-fi nger and throat of
the bobbin case support basket must have a clearance of
0.8 mm to 1.0 mm
(Figure 11.2)
.
This clearance ensures
that adequate space exists for thread escapement during
the sewing process.
Note: If set with too much needle clearance, the basket
will be noisy and can also more easily slip out of adjust-
ment. If set too tight, the thread will get stuck around the
stop-fi nger and may jam the machine.
If an adjustment is necessary:
• Loosen screw A
(Figure 11.1)
and adjust the stop-fi nger
so the proper clearance is achieved as shown in
Figure 11.2
.
•
Important: Ensure that the stop-fi nger stays up tight
against the machined edge at the left of the stop-fi nger as
shown in
Figure 11.1
.
Note: Figures 11.1 & 11.2 are shown from the underside
looking up, not from the top side looking down.
• The machined edge helps support the stop-fi nger from
twisting to the side, allowing the basket to spin out of
position, be hit by the needle and damaged.
• Tighten screw A.
Figure 11.1
Shown from underside,
loooking up.
Machined edge
Screw A
Figure 11.2
Shown from underside,
looking up.
0.8 mm to 1.0 mm
Figure 11.3
Provided for reference
Stop-fi nger cutout