17 | Thread check spring and thread regulator |
Requirement
1.Thread check spring 3 must have moved by its full stroke by the time the point of the needle enters the material (stroke approx. 7 mm).
2.Thread regulator 4 must be fixed in the elongated hole so that thread check spring 3 moves by 1 mm by the time the hook has widened the thread loop to its maximum.
| 5 |
4 | 2 |
3 |
|
1 |
|
| 7 mm |
●Turn thread tension 1 (screws 2) according to requirement 1.
●Shift thread regulator 4 (screws 5) according to requirement 2.
Note:
The stroke of thread check spring 3 and the position of thread regulator 4 are dependent on the type of thread and material used and should be adjusted according to the appearance of the seam.
22 PFAFF
