Synchronizer - Duerkopp Adler 744-122 Service Instructions Manual

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6. Synchronizer

The machine head should position when the bobbin

disk 2 is at the level of the bearer plate 3. It should

not jut out of the bearer plate 3 so that, even with a

closed flap 1, a bobbin thread knotted to the thread

stand can be drawn through (threaded) unhindered.

On the other hand the needle should not lower

much out of its upper dead point.

The bobbin disk must be set as per Section 7.12.

–

First turn off the main switch to check the

position.

–

Bring the needle in the lower position by turning

the handwheel.

–

After turning on the main switch the machine

head turns to the set position.

–

Loosen the screws of the ring 4. Hold the ring

and turn the handwheel so that the bobbin disk

2 moves to the position described above.

Tighten the screws on the ring.

–

Conduct a trial run in the position setting as

described above.

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