Adjustment
11 - 17
11.04.15 Needle thread tension release (on machines without Subclass -900/81)
Requirement
Tension discs 5 must be at least 0.5 mm apart when
1. the presser bar lifter is raised, or
2. the knee lever is operated.
Fig. 11 - 15
● Raise the presser bar lifter and turn screw 1 (nut 2) according to Requirement 1.
● Fully press knee lever and adjust actuator 3 (screw 4) according to Requirement 2.
1
2
3
4
5
5
0.5 mm
0,5 mm
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