Settings; Setting The Thread Tension; Adjusting The Lower Thread Tension - Medion MD 17187 Manual De Instrucciones

Settings

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5. Settings

5.1. Setting the thread tension

If the thread tears while you are sewing, the thread tension is too high.
If small loops are formed when you are sewing, the thread tension is too low.
In both cases, you need to set the thread tension.
The tensions of the upper and lower threads must be such that the right bal-
ance is achieved.
5.1.1. Re gulating the upper thread tension
The tension is created by the discs through which the thread is guided. The
pressure on these discs is controlled by the upper tension thread regulator (3).
The higher the number, the higher the tension.
NOTICE
An upper thread tension of 3 is ideal for most sewing work.
The upper thread tension is not activated until the presser foot is lowered.
There are a number of reasons for adjusting the tension. For example, different
tensions are required for different fabrics.
The tension you require depends on the strength and thickness of the fab-
ric, the number of layers of fabric you want to sew and the type of stitch you
choose.
Make sure that the tensions of the upper and lower threads match, otherwise
the fabric may gather.
We recommend that you carry out a test on a scrap of fabric before starting
work.

5.1.2. Adjusting the lower thread tension

The lower thread tension rarely needs to be adjusted as this has been set by
the manufacturer for general sewing work.
The lower thread tension is correct if you can pull the thread out of the bobbin
easily but with a slight resistance.
However, the lower thread does need to be adjusted for particularly light-
weight or heavy fabrics.
You set the lower thread tension by using the regulating screw on the bobbin
case. Adjust the screw using the small screwdriver provided.
Remove the bobbin case.
Low tension:
Turn the screw anticlockwise
Higher tension:
Turn the screw clockwise.