Adjustment
11 - 37
11.05.14 Bobbin-thread clamp spring
Requirement
1. Between clamp spring 5 and the bottom of thread catcher 4, there must be a distance
of 0.3 mm.
2. At the front point of reversal of thread catcher 4, the points of clamp spring 5 must be flush with
the back edge of catcher 4 (see arrow).
3. There must be a distance of approx.
12 mm or12 mm or
12 mm or12 mm or
12 mm or
8 mm 8 mm
8 mm 8 mm
8 mm (
on PFAFF 242 and 244on PFAFF 242 and 244
on PFAFF 242 and 244on PFAFF 242 and 244
on PFAFF 242 and 244) between the inner edge of clamp spring 5 and guide sleeve 7.
4. It must be posible to insert and remove the bobbin-case from the hook without any interference.
Fig. 11 - 35
● Align carrier 1 (screws 2) in such a way that it is in the middle of its adjustment range
and parallel to the bedplate of the machine.
● Unhook spring 3 (see Page 11-38)
● Manually pivot thread catcher 4 over clamp spring 5.
● Bend clamp spring 5 in accordance with requirement 1.
● Hook spring 3 back in again.
● Bring the machine to needle rise position, activate the engaging lever and bring the
thread catcher to its front point of reversal by turning the balance wheel.
7
4
5
4
0.3 mm
1
6
2
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