Instruction manual

2.10.2 Thread take-up spring

Caution: Risk of injury!

Tur n off the main switch.

Check and set the thread take-up spring only when the machine is

switched off.

Standard checking

The standard setting for the spring travel and spring tension only

apply to usual thread sizes. Very thick or very thin threads or sewing

material may necessitate different settings.

Spring travel

The thread take-up spring 1 has to keep the needle thread from the

moment of the thread lever lifting until the needle eye’s penetrating of

the material under a light tension. In order to achieve a regular seam

with a low thread tension, the travel of the thread take-up spring may

be increased. The thread take-up spring must only meet the stop

when the needle eye has penetrated the material.

Spring tension

The spring tension should be lower than the thread tension.

Correction

Spring travel

–

Loosen screw 2.

–

Tur n the stopping collar 4.

Tur ning counter-clockwise = larger travel

Tur ning clockwise = smaller travel.

–

Tighten screw 2.

Spring tension

–

Loosen screw 2.

–

Adjust the tensioner disc 3 without changing the stopping collar’s

4 position.

Tur ning the disc clockwise = less spring tension

Tur ning the disc counter-clockwise = higher spring tension

–

Tighten screw 2 without changing the positions of the stopping

collar 4 and the tensioner disc 3.