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Thread tension mechanism
Main unit
3 Thread guide cover removal
1. Remove the thread guide cover 1.
*Key point
• Lift the protrusion 2 and slide to the right.
1
2
4 Tension plate removal
1. Remove retaining ring E2, and remove the spring .
2. Remove the screw 1, and remove the tension pressure assy 1 the spring
and the tension release cam 2.
3. Remove the tension plate 3 and the spacer 4.
4. Remove the screw the screw 2.
S02
S03
Retaining ring E2
1
2
1
3
4
2
S02
S03
5 Thread release holder assy. F removal
1. Remove the 2 screws 1, and remove the thread release holder assy. 1.
1
1
6 PF-F SW assy. removal
1. Remove the screw 1, and remove the PF-F SW assy 1 and the presser
switch holder 2.
1
12
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