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2-26 BE-1204B-BC • BE-1206B-BC
Chapter 2 Preparation of Embroidery Machine
3-5 Adjustment of Thread Tension
!
!!
! Adjustment of upper thread
W1248Q W1249Q
Adjust upper thread tension to 0.8~1.4N when the thread is pulled at the needle bar thread guide.
* Correct adjustment
Turn the upper thread tension dial so that the needle thread can be pulled to the back of the material
and that the lower stitch width will be about 1/3 of the upper stitch width.
!
!!
! Adjustment of tension spring
W1250Q
1. The standard height of the tension spring is the point from where the upper thread comes down by
about 14 mm when it is pulled with certain tension which does not pull out the thread.
2. The standard force of the tension spring is 0.2 to 0.3 N at the start of the motion when it is pulled in
the direction illustrated.
Adjust it so that the tension spring does not move when the upper thread is pulled out slowly from
the presser foot.
Upper stitch width
Upper
thread
Lower
thread
Lower stitch width
0.8~1.4N
[2]
0.2~0.3N
[1]
14mm
[3]
6~8mm