Viking Freesia 425 User's Guide download pdf (Page 13)

Instruction book Freesia 415, 425

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Thread tension

Use the recommended setting given

on the Infodisplay (see pages 17,

19).

You can adjust the top thread

tension by turning the dial which is

numbered. The higher the number

the tighter the tension. Normal

thread tension is number 4.

When sewing buttonholes and

decorative stitches set thread tension

to number 3.

When topstitching with a coarse

thread in thick fabric, increase the

tension to 7-9.

Correct and incorrect thread tension

To understand the correct thread

tension, sew a few sample stitches at

different settings.

1. Begin with a tension that is too

loose, i.e. set at "1". The lower

thread will lie straight and the

upper thread will be drawn down

on the underside.

2. If you set the tension at the

highest number, the opposite will

occur, and the seam may pucker.

3. The correct thread tension is

provided when the threads

interlock in the middle of both

layers of material or, in the case

of decorative stitches, on the

underside.

Make a few tests on a scrap piece of

the material you are going to sew

and check the tension.

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