SINGER W761 - Manual (Page 18)

How to Adjust Tensions
Always adjust the upper tension with the presser foot down,
as the tension is automatically released when it is raised.
To increase the the tension onupper thread, turn dial (Fig. 29)
to the right, or clockwise. To decrease, turn to the left.
The higher the number on the dial the tighter the tension.
Before adjusting lower tension be sure that the machine is
threaded properly. When necessary to change the bobbin te­
nsion, turn small screw (Fig. 30) on side of bobbin case clock­
wise to tighten, counter-clockwise to loosen.
When the upper and under tensionl are properly balanced, a
perfect stitch will be formed with both threads interlocking in
fabric (Fig. 26).
When the upper tension is too tight, the lower thread is pulled
up over the upper thread which is lying flat on the fabric
(Fig. 27).
When the under tension is too tight, the upper thread forms
loops over the lower thread lying flat on the fabric (Fig 28).
Fig. 26
Fig. 27
Fig. 28
Perfect choin stitch
Ml
Wh M wm
Hi
^ ........
■
Tension too tight with upper thread
1.
m iBTOl
Tension too tight with under thread
Fig. 29
ff BOeSN TENSION
^AOIUSTMENT SCREW
Fig. 30
( 13 )
CO o
o