9. ADJUSTMENTS

1151B

4.

Remove the presser foot (3), needle plate (4), auxiliary

 

 

needle plate (5), feed dog (6) and needle plate spacer (7)

 

 

(8560A only).

 

5.

Turn the machine pulley to raise the needle bar (8) from

 

 

its lowest position until the reference line on the thread

 

 

take-up lever (9) is aligned with the Ø mark on the face

 

 

plate, and then check the following.

 

 

•

The tip of the rotary hook (10) should be aligned with

 

 

 

the center of the needle.

 

 

•

The distance from the tip of the rotary hook (10) to the

 

 

 

needle should be 0 to 0.05 mm.

 

6.

If the above settings are not correct, loosen the two set

 

 

screws (11) and adjust the position of the rotary hook

 

 

(12).

 

 

After adjusting, securely tighten the two screws (11).

 

7.

Set the zigzag width to the maximum setting (8 mm).

 

8.

Turn the machine pulley to move the needle to its furthest

 

 

left position so that the tip of the rotary hook (10) is

 

 

aligned with the center of the needle, and check that the

 

 

distance from the upper edge of the needle hole to the tip

 

 

of the rotary hook (10) is 0.2 to 0.5 mm at this time.

 

 

*

If the distance is not correct, carry out the adjustment

 

 

 

in “9-10. Needle bar height”.

 

9.

If needle deflection occurs when sewing material with

 

 

joints, bend the needle guard (13) as shown in the

 

 

illustration (A) so that it touches the needle.

 

 

*

After this, check that the clearance between the tip of

 

 

 

the rotary hook (10) and the needle is 0 to 0.05 mm.

10. Press the TEST key (1). The TEST icon (2) will switch off. (The mode will return to normal sewing mode.) Turn off the power switch and continue the adjustment.

3525M

Maximum zigzag width

3527M

3526M

9-15. Bobbin case holder bracket position

Adjust so that the end of the bobbin case holder position bracket (1) is 0 to 0.5 mm back from end (A) of the inner rotary hook (2).

* The end of the bobbin case holder position bracket (1) must never extend to the right of end (A) of the inner rotary hook (2).

1. Loosen the screw (3) and adjust the position of the bobbin case holder position bracket (1).

2. Securely tighten the screw (3).

3528M

77

Z-8550A, 8560A