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11.
Adjusting the thread trimmer -900/56
05
11.
Pre-adjusting the control cam
05.01
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
Fig. 11 - 22
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
6
7
5
8
5
4
1
2
8
Adjustment
3
11 - 24
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