7. ADJUSTMENT
7-5. Adjusting the needle clearance
0138Q
4670Q
Turn the pulley to align the tip
of
the rotary hook with the needle center line. Then loosen the set screw (1) and tum the
eccentric shaft
(2) to adjust so that the clearance between the needle and the rotary hook is 0.01 - 0.08 mm.
7-6. Adjusting the shuttle race thread guide
II
,
t
3574Q
Install the shuttle race thread guide (1)
by
pushing it in the direction
of
the arrow so that the needle groove is aligned with
the center
of
the needle plate hole.
Note:
If
the shuttle race thread guide is
in
the wrong position, thread breakages, soiled thread
or
thread entanglements may
occu~
.
The position ·of the shuttle race thread guide is adjusted at the time
of
shipment from the factory. It should not be
changed
if
at all possible.
KE-4300, BE-438D
67
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