Setting the safety snap-on coupling
Service manual 567 classic - 01.0 - 10/2015
65
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
Correct 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 (
3.3.1 Access to the machine bottom section
Fig. 55: Attaching the safety snap-on coupling
Setting steps
1. Fix a setscrew (1) of the left adjusting ring (2), with an Allen key, for
example.
2. Turn handwheel until the safety snap-on coupling (3) engages.
The setscrews (1) are parallel to each other.
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.
② ③ ④
①
(1) - Setscrews
(2) - Left-hand adjusting ring
(3) - Safety snap-on coupling
(4) - Right-hand adjusting ring
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