Main unit
1
Attachment of Thread unit L
1. Attach the Thread unit L 1 to the arm bed with the 2 screws 1.
*Key point
• Check that the thread release plate 2 is on the left side of the
thread release lever 3.
• Refer to "4-7 Adjustment of Upper thread tension".
2. Bind up the lead wire with the band 4.
1
3 - 18
Thread tension mechanism
Stud screw
M4
Torque
1.18 – 1.57N·m
1
1
2
4
3