DURKOPP ADLER H-Type 969, Service Instructions Manual

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Adjusting the sewing foot feed
Service Instructions 969 - 01.0 - 12/2015 59
11 Adjusting the sewing foot feed
11.1 Adjusting the zero stroke of the feet, tension force of the
torsion spring
The zero stroke of the sewing feet must be adjusted with the upper ma-
chine cover removed. To perform the adjustment, position the connecting
rods (1) in a line.
Proper setting
When the connecting rods (1) are in a line:

The ball pin (7) is touching the stop screw (9).

The torsion spring is twisted 15° to 20°.
Cover
• Arm cover (

p. 11).
Fig. 40: Setting the zero stroke of the feet and the tension force of the torsion spring
WARNING
Risk of injury!
Switch the machine off before checking and
adjusting the position of the sewing foot feed on the
machine.
①
②
③
④
⑤
⑥
⑦
⑧
⑨
(1) - Connecting rod
(2) - Frame
(3) - Pin
(4) - Screw opening
(5) - Torsion spring (6) - Screw
(7) - Ball pin
(8) - Counternut
(9) - Stop screw