11 - 14
Adjustment
11.
05
Adjusting the thread trimmer -900/56
11.
05.01
Pre-adjusting the control cam
Requirement
1. The bearingsurface of control cam
5
must be laterally in the middle of pawl
8.
2. With the take-up lever at its TDC, the beginning of the largest eccentricity of the
bearing surface (in the direction of rotation) must be underneath the point of pawl
8.
8
5
●
Remove catch
1
(screws
2
).
●
Remove plate
3
(screws
4
).
●
Loosen the four screws of control cam
5
and screws
6
of retaining collar
7
.
●
Move control cam
5
laterally in accordance with
requirement 1.
●
In this position bring retaining collar
7
to rest on control cam
5
and tighten screws
6
.
●
Bring the take-up lever to its TDC by turning the balance wheel.
●
Turn control cam
5
in the direction of rotation in accordance with
requirement 2
, taking
care to note that it is touching retaining collar
7
.
●
In this position, tighten the four screws on control cam
5
.
5
Fig. 11 - 12
6
7
3
4
1
2
5
8
8
