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5. MECHANICAL DESCRIPTIONS
Z-8550A, 8560A
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5-8. Tension release mechanism
1. Lifting lever <1> Knee lifter connecting rod
(Press the knee switch.)
2. Presser bar lifter lever
3. Tension release plate
4. Tension release stud
5. Tension release pin
(Press the tension disc presser.)
6. Tension disc presser
7. Rotary disc
(1) Tension release pin
1120B