12
MECHANICAL ADJUSTMENT
CLEARANCE BETWEEN NEEDLE AND TIP OF THE ROTARY HOOK
* The clearance between the needle and the point of hook should be –0.10 to +0.05 mm.
ADJUSTMENT PROCEDURE:
1. Remove the face cover (see page 4).
2. Remove the setscrews (2 pcs.) on the needle plate.
3. Remove the needle plate and the bobbin holder.
4. Attach the master needle. Turn the power switch on and set the zigzag width at maximum.
5. Loosen the setscrew (B) (2 pcs.).
6. Turn the handwheel toward you. Adjust the clearance between the needle and the tip of the rotary
hook, by moving the hook base plate up or down, to within –0.10 to +0.05 mm at the left and right
needle position.
7. Tighten the setscrew (B) (2 pcs.).
8. Attach the face cover. Remove the master needle. Attach the bobbin holder and needle pate.
9. Check the clearance between the needle and the edge of the needle hole in the needle plate (see
page 9).
Tip of hook
–0.10 to +0.05 mm
Needle bar supporter
adjust plate
Setscrew (B)
Needle plate
Setscrew (A)
Setscrew (A)
Bobbin holder
