8. Adjusting The Clearance Between Rotary Hook And Opener (Thread Release Finger) - Consew 206RBL-18 Operating Instructions & Parts Book

8-8. Adjusting the Clearance between rotary hook and opener
(Thread release finger)
o
L
The opener facilitates the passage of the needle thread
loop by slightly nudging the inner hook creating a
slight rotating movement of it. This movement at that
very instant opens a clearance gap between the notch
of the inner hook and the tab of the hook retainer per-
mitting the needle thread loop to be drawn easily
through the gap.
• Clearance between the opener and pro-
jection of hook.
1. Loosen the screw
O.
2. Adjust the clearance between projection of hook
8.
and the opener
e
by means of movement of
thread releasing shaft bushing" to the right or
to the left as may be required. The standard clear-
ance between the two parts is O.7-0.9mm.
3. Tighten the screw
0
securely.
• Position of the opener cam:
Place the one of screws (3 which is indicated by
·S" on V ditch of the hook shaft.
• Adjustment of operation:
1. Turn the machine pulley until the opener
e
presses the projection of hook
8
extremely on its
travel.
2. Press the opener
e
to the projection of hook
8
and make the right side clearance between the
notch on the bobbin case holder and tab the hook
retainer
0
O.4-0.6mm.
This adjustment can be done by loosening the
screw
6.
3. Tighten the screw
6
securely.