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12.2 Setting the timing for opening
Proper setting
The bobbin case lifter starts to open exactly at the point when the hook tip
is located below the bobbin case lifter after the loop is taken up.
Cover
• Tilt the machine head ( p. 14)
Fig. 46: Setting the timing for opening
(1) - Plug
(2) - Hook housing
To set the timing for opening:
1. Remove the plug (1) on the bottom side of the hook housing (2).
2. Loosen the threaded pin (4) through the slot.
3. Turn the handwheel until the hook tip is exactly below the bobbin case
4. Use the hex key to turn the control cam (3) such that the bobbin case
5. Tighten the threaded pin (4).
6. Insert the plug (1) into the slot.
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lifter.
lifter opens at the correct point in time.
Setting the bobbin case lifter
(3) - Control cam
(4) - Threaded pin
Service Instructions 1767 - 00.0 - 12/2016
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