Pfaff 1529 Owner's Manual page 21

A
B
Inserting the bobbin
Insert the full bobbin (with the Pfaff logo
facing towards the bobbin case) into the
bobbin case. In doing so, pull the thread
sideways through slot A, then under
the tension plate B until it rests in the
opening (see arrow).
Check: When you look at the bobbin and pull
the thread, the bobbin must turn clockwise.
Inserting the bobbin case
Lift lever E and slide the bobbin case
onto the hook pin C as far as it will go.
Opening D of the bobbin case must face
C
upwards.
Check: Pull the bobbin thread sharply. The
D bobbin case must not fall out of the hook.
E
Operate your Pfaff select 1:9
1:9