Brother International Z-8550A Instruction Manual - English - Page 73

Bobbin case holder position bracket position

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12. STANDARD ADJUSTMENTS Maximum zigzag width 3524M 4. Remove the presser foot (3), needle plate (4), auxiliary needle plate (5), feed dog (6) and spacer (7) (856A only). 5. Turn the machine pulley to raise the needle bar (8) from its lowest position until the reference line on the thread takeup (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 are not correct, loosen the two screws (11) and adjust the position of the rotary hook (12). After adjustment, 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, adjust the height of the needle bar. (Refer to page 64.) 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) so that the TEST icon (2) switches off. (Normal sewing will then be possible.) Turn off the power to continue adjustment. 3525M 3526M 3527M 12-10. Bobbin case holder position 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 65 Z-8550A, 8560A

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Z-8550A, 8560A
12. STANDARD ADJUSTMENTS
65
4. Remove the presser foot (3), needle plate (4), auxiliary
needle plate (5), feed dog (6) and spacer (7) (856A only).
5. Turn the machine pulley to raise the needle bar (8) from
its lowest position until the reference line on the thread
takeup (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 are not correct, loosen the two screws (11)
and adjust the position of the rotary hook (12).
After adjustment, 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, adjust the height of the
needle bar. (Refer to page 64.)
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) so that the TEST icon (2)
switches off. (Normal sewing will then be possible.)
Turn off the power to continue adjustment.
12-10. Bobbin case holder position 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).
Maximum zigzag width
3526M
3527M
3524M
3525M
3528M