5-8. Tension release mechanism
[Zigzag tension control]
1. Tension release solenoid assembly
2. Tension release solenoid link
3. Tension release link
4. Tension release pin
5. Tension disc pressers
[Tack tension control]
1. Pulse motor
2. Driving gear
3. Presser driving arm
4. Presser foot lifter connecting rod
5. Knee lifter lever
6. Upper thread trimmer driving link
7. Tension release driving lever
8. Tension release shaft
9. Tension release cam
10. Tension release pin
11. Tension disc pressers
HE-800B
5. MECHANICAL DESCRIPTIONS
0648D
0649D
42
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