Page 26
HQ Sweet Sixteen Service Manual
8. Needle Position, Check, & Adjustment
Figure 8.1 (Note: X & Y marks for clarifi cation)
Bobbin case end
Figure 8.2
G
D
The needle position adjustment is the most important of
all adjustments in the machine. Needle position provides
the foundation for which all other settings are made.
Once the needle position has been completed, great care
must be maintained to keep this setting. It is important
that the sewing machine be transported carefully, to avoid
bumping or dropping.
Check:
Use a new System 134/Size 100 needle. Check the needle
for straightness on a fl at surface such as the needle plate.
The needle must be centered in the stitch hole of the nee-
dle plate as shown in
Figure 8.1. (2 mm and 3 mm handle
Allen).
Check with needle eye fl ush with the needle plate, do not
check with needle in the lowest postions. Add ( screw to
screw) after adjustment for Y axis (screw to screw): This
adjustment is done with the cover off.
Adjustment for Y axis:
Cover Off
Note that adjustment is done with the front frame
cover off.
If a correction is necessary:
• Loosen fi rst screws D and G
(Figure 8.2)
• Loosen screw A and screw B
(Figure 8.2)
• While pushing the head frame back into the main cast-
ing, gently slide the head frame left or right to correct as
necessary.
• Tighten screws A and B in
Figure 8.2
.
• Note: If needle position changes, repeat the process. Do
not tighten screws D or G at this time.
A
B