Brother 4234D - Manual (Page 12)

8
Tension adjustment dial
There is a thread tension dial for each needle thread,
the lower looper thread and the upper looper thread.
The correct thread tension may vary according to the
type and thickness of the fabric and the type of thread
used. Thread tension adjustments may be necessary for
any change in sewing materials.
1 2 3 4
1 Yellow marked tension disc is for left needle.
2 Green marked tension disc is for right needle.
3 Pink marked tension disc is for upper looper.
4 Blue marked tension disc is for lower looper.
Tension control
Sewing is possible at position "4" for most
circumstances. (Standard: SPAN 60/3Z)
If the stitch quality is insufficient, select a different
tension setting.
4
5
3
!
<A> Tension selection mark
1 For heavy tension: 4 to 7
2 For light tension: 4 to 2
3 For medium tension: 5 to 3
If you cannot find the correct tension, refer to the charts
on following pages.
CAUTION
Make sure that the thread is properly seated in the
tension discs.