Adjustment
11 - 21
11.04.19 Thread check spring and thread regulator
Requirement
1. The movement of springs 3 and 6 must be finished when the needle points enter the
material.
2. When the thread loops are extended the farthest while being passed around the hook,
springs 3 and 6 must rise from stops 1 and 9 a little.
Fig. 11 - 19
● Position stop 1 (screw 2) according to Requirement 1.
● To adjust the pressure of spring 3, turn screw 4 ( screw 5 ).
● To adjust the pressure of spring 6, turn sleeve 7 ( screw 8 ).
● Position stop 9 (screw 10 ) according to Requirement 1; if the adjusting range is too
small, stop 9 can be screwed into another hole.
● Position regulator 11 ( screw 12 ) according to Requirement 2.
For sewing-technical reasons it may be necessary to choose a different spring
stroke or spring pressure from that indicated. Position regulator 11 ( screw 12 )
according to the required amount of thread.
1
2
3
4
6
7
8
9
10
11
12
+
-
5
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