Operation Manual

7.2 Adjusting needle thread tension

Pre-tensioning 3

When the main tensioner 2 is open a slight residual tension on the

needle thread is required. The residual tension is created by the

pre-tensioner 3.

At the same t ime the pre-tensioner 3 affects the length of t he cut

needle thread end (starting thread for the next seam).

–

Shorter starting thread:

Tur n the knurled nut 1 clockwise.

–

Longer starting thread:

Tur n the knurled nut 1 anti-clockwise.

Main tensioner 2

The main tensioner 2 must be set as low as possible.

The threads should intertwine in the middle of t he material.

If the thread tensions are too great this could lead to unwanted

crimping and thread tearing with thin material.

–

Adjust the main tensioner 2 so that an even stitch pattern is

achieved.

To increase tension = turn the knurled nut

clockwise

To reduce tension = turn the knurled nut

anti-clockwise

7.3 Opening needle thread tensioner

Automatic

The needle thread tension opens automatically when the thread is cut

and when the material clamping feet are raised.

32 1