Pfaff 521 Instruction Manual page 61

The fifth seam section should have
- a double end backtack
- a 5 mm stitch length (for roller presser and feed wheel)
- backtack speed of 700 spm
- a stitch count (1 stitch)
- and the thread trimming function at the end of the seam section.
By pressing the corresponding +/- key set the stitch length for the roller presser
at "5.0 ".
By pressing the corresponding +/- key set the stitch length for the feed wheel at "5.0".
By pressing the end backtack key, switch on the corresponding function.
The display changes for the input of the number of stitches for the end backtack
C
By pressing the corresponding +/- key set the number of reverse stitches at "1".
D By pressing the corresponding +/- key set the number of forward stitches at "1".
By pressing the corresponding +/- key set the backtack speed at "700".
By pressing the stitch count key, switch on the corresponding function.
The display changes for the input of the number of stitches.
If the stitch count function is already switched on, change by pressing the Scroll key.
PM
5
5 5.0 5.0
PM
5 C D
5 1 1 700
PM
5
5 1
Input
11 - 14