9. ADJUSTMENTS

9-8. Feed amounts for reverse stitching and condense stitching

The feed amounts for reverse stitching and condense stitching are set using the condense dial (1).

If the stitch length for the finished stitches differs greatly from the scale, carry out the following adjustment. (The scale is intended as a guide.)

1. Set the condense dial (1) to “0”.

2. With the reverse stitching lever (2) pushed down, turn the machine pulley about 10 times and check that the material feed amount is zero.

If the feed amount is not zero, carry out the adjustments in steps 3. and 4. below.

3. Move the condense dial (1) slightly to the left or right from the “0” position on the scale.

Repeat the check in step 2. above, and find the position where the material feed amount is zero.

4. At the position where the material feed amount is zero, loosen the screw (3), turn only the dial of the condense dial (1) to align it with the “0” position on the scale, and then secure it by tightening the screw (3).

0142B

9-9. Needle and feed timing

0143B

Adjust so that the mark on the level feed eccentric wheel

(2)is aligned with the mark on the feed driving connecting rod (3) when the reference line on the thread take-up lever (1) is aligned with the mark (“B” for the 8550A, “C” for the 8560A) on the face plate.

1.Tilt back the machine head.

2.Align the reference line on the thread take-up lever (1) with the “B” mark (for the 8550A) or the “C” mark (for the 8560A) on the face plate.

3.Loosen the four set screws (4).

4.Turn the level feed eccentric wheel (2) to align

the mark with the mark on the feed driving connecting rod (3).

5.Securely tighten the four set screws (4).

*After the needle and feed timing has been adjusted, also carry out the adjustment in “9-14. Needle and rotary hook timing”.

For the 8560A, also carry out the adjustment in “9-21. Adjusting the position of the thread trimming cam”.

1181B

Z-8550A, 8560A

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