General - Duerkopp Adler 69-373 Service Instructions Manual

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General

These service instructions describe the adjustments that can be made
to the class 69 special sewing machine.
69-373 Single-needle, lockstitch, free-arm sewing machine with
bottom feed, needle feed and alternating top feed.
69-373-H like the class 69-373,
additionally with bottom feed stroke.
ATTENTION!
The tasks described in the present service instructions may only be
carried out by qualified staff or other appropriately trained persons!
Caution: Danger of injury!
Always turn off the main switch before any repair, conversion and
maintenance work and separate the machine from the pneumatic
supply line.
Any adjustment work and function testing with the machine running is to
be conducted only under observance of all safety measures and with
the greatest possible caution.
The present service instructions describe the setting of the sewing
machine in a logical order.
Please remember that various setting positions are dependent on each
other. Thus it is essential that the settings be made in the order
described.
For all adjustments of parts involved in the stitch formation, a new
undamaged needle must be inserted.
When adjusting the cutting devices all the cutting tools must also be
replaced.
ATTENTION!
All parts marked with colors were set at the factory and should only be
loosened by skilled personnel.
GB
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