Instruction manual

6.8 Setting the thread regulator

The thread regulator 2 regulates the amount of needle thread necessary for stitch

formation. Only a properly-adjusted thread regulator ensures an ideal sewing result.

The setting depends on the following factors:

–

stitch length

–

material thickness

–

yarn characteristics

At the correct setting the upper-thread loop 6 must slide at low tension over the shuttle.

Caution: danger of injury

Turn off the main switch.

The thread regulator may only be adjusted with the

machine turned off.

–

Loosen screw 5.

–

Adjust thread regulator 2.

The vertical wire 3 acts as an adjustment aid in combination with scale 4

(standard value: 2.5).

–

Tighten screw 5.

Note on adjustment:

When the thread regulator 2 is correctly adjusted, the following must apply:

–

When thread loop 6 passes the thickest part of the shuttle, the thread-tensioning

spring 1 must be pulled about 1 mm downwards from its upper end position. 1 mm

is a standard value. It may be higher or lower, depending on the tension of the

thread-tensioning spring 1.

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