Upper Tension; Lower Tension; The Correct Lower Tension - Pfaff synchrotronic 1229 Instruction Book

Jpper tension (6)
=
Setting mark. The normal tension
setting is in the light-coloured range
between 3 and 5. The higher the
number, the tighter the tension.
ower tension
=
Regulating screw.
Turn it left for a looser tension,
or right for a tighter tension.
1
=
Both tensions are correct.
=
Upper tension too loose or lower
tension too tight.
=
Lower tension too loose or upper
tension too tight.
The correct lower tension
Let the bobbin case with a full bobbin
hang down freely by the thread. It must
not slide down by its own weight, but
should gradually move downwards when
you jerk your hand upwards lightly.
Once the lower tension has been set
correctly, adjust the upper tension only.
L
M
N
0
4