Adjustment
28
1.06 Adjusting the thread trimmer -900/81
1
.06.01 Resting position of roller lever/radial position of control cam
Requirement
1. When the take-up lever is at t.d.c. (balance wheel position 60 °), control cam 1 should
just have moved roller lever 5 into its basic position.
2. When the thread trimmer is in its resting position, there should be a clearance of
0.1 mm between roller lever 5 and control cam 1.
● Adjust control cam 1 (screws 2) in accordance with requirement 1.
● Adjust screw 3 (nut 4) in accordance with requirement 2.
Fig. 1 - 22
1
2
4
5
0,1 mm
3
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