Adjusting the thread cut-off
Service instructions 967 - 00.0 - 12/2014
81
14.6 Adjusting the hook thread clamp
Correct setting
If the hook thread clamp (4) is set to the correct pressure:
The end of the hook thread (1) at the start of the seam must be 40 -
50 mm long.
Cover
• Tilt the upper section ( page 10).
Figure 56: Adjusting the hook thread clamp
Setting steps
1. Perform a few short seams, cutting off the thread at the end of each seam.
2. Measure the lengths of the ends at the hook thread (1) at the start of
the seams.
• If the thread ends (1) are shorter than 40 mm: Increase the pressure
at the hook thread clamp (4):
- Undo the screw (2).
- Turn the eccentric (3) slightly anticlockwise.
- Tighten the screw (2).
Proceed in this way until a satisfactory result is obtained.
• If the thread ends (1) are longer than 50 mm: Reduce the pressure
at the hook thread clamp (4):
- Undo the screw (2).
- Turn the eccentric (3) slightly clockwise.
- Tighten the screw (2).
Proceed in this way until a satisfactory result is obtained.
(1) - End of the hook thread
(2) - Screw
(3) - Eccentric
(4) - Hook thread clamp spring
ཱ
ཱི
40-50 mm
ི
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