3 - 4
Thread tension mechanism
Main unit
2
Thread tension dial attachment
1. Attach the link arm assy. 1 to the thread tension holder assy.
2. Attach the thread tension dial 2 and thread tension dial shaft 3 to the
thread tension holder assy.
*Key point
• Hand start the thread tension dial shaft, and fully tighten after
attaching retaining ring E3.
3. Attach the spring washer, polyester slider, plain S4 washer to the thread
tension dial 3, and attach retaining ring E3.
4. Fully tighten the thread tension dial shaft 3.
Start movie clip (CD-ROM version only)
Thread tension dial shaft
Torque
0.78 - 1.18 N-m
1
2
3
Retaining ring E3
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