Pfaff 1246 - Manual (Page 74)

Adjustment
11 - 34
11. 05.14 Bobbin-thread clamp spring
(On Model 1246 make these adjustments on both clamp springs.)
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). There must be a distance of approx.
12 mm between the inner edge of clamp spring 5 and guide sleeve 7.
The bobbin-case must be able to be inserted and removed from the hook
without any interference..
Fig. 11 - 29
● 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.
● Manually pivot thread catcher 4 over clamp spring 5.
● Bend clamp spring 5 in accordance with requirement 1.
● Hook spring 3 back in again.
1 6
2
7
4
4
5
0.3 mm