Duerkopp Adler 291 Service Manual download pdf (Page 10)

6.6 Fitting the looper-thread bobbin

Caution - danger of injury!

Turn off the main switch.

The looper-thread bobbin may only be changed with the se-

wing machine switched off.

Removing the empty looper-thread bobbin

–

Raise the sewing foot.

–

Open shuttle cover 3.

–

Raise bobbin-housing flap 1.

–

Remove upper part of bobbin-housing 2.

–

Remove empty looper-thread bobbin.

Threading looper thread

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Place full bobbin 4 in the upper part of bobbin-housing 2:

When the thread is unwound the bobbin must rotate

in the opposite direction

(see arrow).

–

Draw looper thread through slit 5 beneath tensioning spring 6.

–

Thread looper thread through hole 7 in the upper part of bobbin-housing 2.

–

Trim looper thread to approx. 3 cm.

–

Insert upper part of bobbin-housing 2 with full bobbin into the shuttle.

–

Close bobbin-housing flap 1.

–

Close shuttle cover 3.

1 2 3

2 5 6 7

1 2 ... 5 6 7 8 9 10 11 12 13 14 15 ... 27 28

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Duerkopp Adler 291 Service Manual Page 10