Baby Lock BLMY, Service Manual

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Adjustment (Modules)
In
spection and
Adjustment
Adjust the needle thread block
1. Attach a needle.
2. Turn the unit shaft, and position the needle bar at its highest point (position where the D cut of the unit axis faces
forward).
3. Loosen the set screw (socket FT 4 x 4).
4. Adjust the height of the needle thread block so that the threading hook passes through the needle hole, and secure
with a set screw (socket FT 4 x 4).
*Key point
• Secure the set screw (socket FT 4 x 4) so that the position of the needle thread block set screw is seen to be
slight to the left when viewed from the front.
• Adjust so that the upper edge of the threading hook and the upper edge of the needle hole are at the same
height.
NOTE • If the needle thread block set screw position is too far to the left, the hook will not operate and treading cannot
be done. (Fig. 1).
•If the needle thread block set screw position is too far to the right, the needle bar supporter assy. and the
needle thread block will come into contact and be damaged (Fig. 2).
•See the threading usage conditions "1. Outline of Mechanism".