Brother 681B-UG Panduan Pengguna - Halaman 18

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PERFECT STITCHING

INCORRECT STITCH (A)

INCORRECT STITCH (B)

Tension of upper and lower threads should

be equal, just sufficiently strong to lock

both threads in material.

Perfect stitching appears flat with no

puckering of material.

When the upper thread lies on the surface

of the material by pulling the lower thread

up as shown.

This is caused by tight tension on the upper

thread or loose tension on the lower thread.

To correct this, turn the upper thread tension

dial to a lower number.

If perfect stitching cannot be obtained by

adjusting upper thread tension, adjust bobbin

tension.

When the lower thread lies on the under

surface of the material by pulling upper

thread down as shown.

This is caused by loose tension on the upper

thread or tight tension on the lower thread.

To correct this, turn the upper thread tension

dial to a higher number.

If perfect stitching cannot be obtained by

adjusting upper thread tension, adjust bobbin

tension.

NOTE: It is recommended that a test sample

is made before starting to sew.

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