Mechanical adjustment
Clearance between Needle and Hook
The clearance between the needle and hook should be -0.10 to +0.05 mm.
Adjustment procedure:
1. Select the zigzag stitch “ “ and set the stitch width at “7.0”.
2. Remove the needle plate (A) and bobbin holder (B).
3. Replace the needle with the test pin and tighten the needle clamp screw.
4. Remove the face cover (See page 4.).
5. Turn the handwheel to bring the hook point just behind the test pin. Loosen the setscrew (C) and
adjust the clearance between the needle and hook point to –0.10 to 0.05 mm by moving the top end
of the needle supporter back or forth.
6. Tighten the setscrew (C).
7. Attach the face cover.
8. Attach the bobbin holder and needle plate. Replace the master needle with the sewing needle.
Needle plate setscrew
Needle plate (A)
Hook
Bobbin holder (B)
Setscrew (C)
Needle bar supporter
Tept pin
Needle clamp
screw
Hook point
-0.10 to +0.05 mm
17
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