Before You Start Winding The Bobbin - Pfaff 1213 Instruction Book

Before you start winding the bobbin
remember that you need two threads to sew
a seam: an upper and a lower thread. These
two threads are locked together in the middle
of the fabric to form a lock stitch. The seam
produced in this way is illustrated below.
If your seam doesn't look like the illustration,
turn to page 21.
To wind the bobbin, turn the machine on by
pushing button C (page 4). The sewing
mechanism must be disengaged (see page 7).
For step-by-step bobbin winding instructions
please refer to page 7.