Adjustment

13.05.11 Bobbin case opener

Requirement

The needle thread must neither be trapped between bobbin case opener 3 and hook base

4nor between position finger 5 and the retainer on the needle plate (see arrows).

2

6

5

1

3

4

Fig. 11 - 11

● Undscrew and remove post covers 1 (on left post from the rear).

● Undo screws 2 enough to allow bobbin case opener 3 to be turned on its shaft against a resistance.

●Thread up the machine, place sewing material in and lower the lifting presser.

●Set bobbin case opener 3 according to Requirement.

●In this position, apply pressure on the bobbin case opener from the top, move clamp collar 6 up against it and tighten screws 2.

13 - 13