Adjustment Of The Upper Thread Tension - promelectroavtomat XL2120 Service Manual

Adjustment

19.Adjustment of the Upper Thread Tension

• The thread tension should be 0.38 - 0.43 N (38 - 43g) when pulled slowly using a tension gauge.
1 Raise the presser foot.
2 Set the thread tension dial to 4.
3 Thread a schappe spun sewing thread # 60 through the thread guide and the thread tension disc.
4 Lower the presser lifter.
5 Adjust the tightening amount of the thread tension adjusting screw so that the thread tension is 0.38 - 0.43 N
(38 - 43g) when pulled slowly using a tension gauge.
6 Apply a small amount of screw locking agent to the thread tension adjusting screw.
0.38 - 0.43N (38 - 43g) Adjusting screw
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