DURKOPP ADLER 991-210-10 Series, Service Instructions Manual

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Working basis
20 Service Instructions 911-210-10 - 00.0 - 06/2020
3.3.6 Opening and closing the hook cover
Opening the hook cover
To open the hook cover:
1. Switch on the machine and reference it.
2. Remove the sewing material holder.
3. Press the Einfädelmodus (Threading mode) button.

The hook cover swivels to the side.
Closing the hook cover
To close the hook cover:
1. Release the Einfädelmodus (Threading mode) button.

The hook cover swivels back.
2. Place the sewing material holder.
3.4 Flats on shafts
Some shafts have flat surfaces at the points where the components
are clamped onto the shafts. This stabilizes the connection and makes
adjusting easier.
Fig. 6: Flats on shafts
Important
Always ensure that the screws are completely flush with the surface.
If several screws are needed, make sure the first screw is placed in
the direction of rotation on the flat of the shaft.
(1) - Flat (2) - Shaft
①
②