Operation Manual

Adjusting tensioners (2) and (3)

CLASSIC machines with pneumatic control

Through pressing the key (5) the additional tension (2) will be switched

off. If the key (5) is pressed anew, the additional tension will be

activated again. The connectable additional tension (2) helps in quick

adjustment of the needle thread tension, for example in order to get a

tight stitch formation with regular seams when sewing different

materials.

–

Press the key (5).

–

Sew material with few layers and regulate the thread tension via

the main tensioner (3) until the correct interlacing of the thread is

reached (see illustration).

–

Sew material with more layers, switch on the additional tension (2)

via the key (5) and regulate it until the correct interlacing of the

thread is reached.

Correct interlacing of threads in the center

of the material

Needle-thread tension too weak

Hook-thread tension too strong

Needle-thread tension too strong

Hook-thread tension too weak