Setting The Safety Snap-On Coupling - Dürkopp Adler 867 Service Instructions Manual

Setting the safety snap-on coupling

18 Setting the safety snap-on coupling
The safety snap-on coupling disengages in the event of the thread jam-
ming and thus prevents the hook from being misadjusted or damaged.
18.1 Attaching the safety snap-on coupling
Proper setting
The four setscrews (1) on the two adjusting rings next to the safety snap-
on coupling (3) must be parallel to one another. After the coupling has dis-
engaged, they are no longer parallel.
Cover
• Tilt the upper section ( p. 14)
Fig. 70: Attaching the safety snap-on coupling
Setting steps
1. Turn the left adjusting ring (2) such that the setscrews (1) are parallel
 The coupling engages.
Service Instructions 867 - 03.0 - 10/2017
WARNING
Risk of injury
Crushing injuries from moving parts.
Switch off the sewing machine before you reattach
the safety snap-on coupling after the thread has
jammed.
(1) - Setscrews
(2) - Left-hand adjusting ring
(3) - Safety snap-on coupling
(4) - Right-hand adjusting ring
to one another.
(5) - Setting slot
(6) - Marking point
(7) - Coupling screw
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