Endless zipper feed (optional)
216 Service Instructions 755 A/756 A - 00.0 - 02/2019
4. Shift the holder (2) in the slotted holes.
 The distance between the front edge of the driver zipper and
the needles is 3 mm.
5. Tighten the screws (1).
Proper setting
The spring (3) presses the driver zipper back when in pressureless condition.
The zipper is fixed in place at the start of transport.
The driver zipper moves at the same speed as the transport carriage when
sewing begins.
6. Loosen the screws (5).
7. Move the holder (4) until the spring (3) pushes the driver zipper slightly
back.
8. Tighten the screws (5).
9. Perform a sewing test and readjust the spring force if necessary.
Fig. 214: Setting the distance between the driver zipper and the needles (2)
10. Loosen the nut (7).
11. Turn the piston rod (6).
 The driver zipper is situated 2 mm below the needle tips.
12. Tighten the nut (7).
(6) - Piston rod (7) - Nut
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