Instruction manual

6. Operation

6.1 Threading the needle thread

Caution: danger of injury

Turn off the main switch.

The needle thread may only be threaded with the machine

turned off.

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Place the yarn reel on the reel stand as shown in the illustration.

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Thread the needle thread as shown in the diagram on the preceding page.

6.2 Setting the needle thread tension

Setting the needle thread pre-tensioner

The needle thread main tensioner 4 is opened while the thread is cut, but to ensure that

the thread is cut reliably the needle thread must be under slight residual tension. This

residual tension is produced by the needle thread pre-tensioner 1.

The pre-tensioner 1 simultaneously affects the length of the end of the cut needle

thread, and hence the thread length needed for the next secure seam start.

Basic setting: Turn knurled nut 2 until its front is flush

with the bolt 3.

To shorten the starting thread: Turn knurled nut 2 clockwise

To lengthen the starting thread: Turn knurled nut 2 anti-clockwise.

Important: After major changes to the needle-thread pre-tensioner it may

be necessary to adjust the main tensioner 4 in order to achieve

consistent results.

Adjusting the main tensioner

The needle-thread pre-tensioner 1 and main tensioner 4 together produce the thread

tension required for the seam (see fig. a).

Adjustment:

To increase tension: turn the knurled nut 4 c lockwise

To reduce tension: turn the knurled nut 4 anti-clockwise

6.3 Releasing the needle-thread tension

Automatic

The main tensioner 4 is automatically raised when the thread is cut.