11 - 26
Adjustment
11
.05.13
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
12 mm
12 mm
12 mm
12 mm 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 - 24
●
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
