7. CORRECT USE
25
BE-438C
7-6-2. Lower thread tension
Adjust the thread tension to the weakest possible tension by
turning the thread tension nut (1) until the bobbin case will
not drop by its own weight while the thread end coming out
of the bobbin case is held.
7-6-3. Upper thread tension
.
Turn the tension nut (1) (main tension) to adjust the tension
as appropriate for the material being sewn.
Furthermore, turn the thread nut (2) (sub-tension) to adjust
the remaining length of upper thread to 35 - 40 mm when the
thread take-up lever is not used.
7-6-4. Thread take-up spring height
Loosen the set screw (1) and turn the tensioner body to
adjust the thread take-up spring height.
2536Q
Weaker Stronger
2655Q
Weaker
Stronger
Weaker
Stronger
2656Q
Lower
Higher