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Adjustment Inner rotary hook assy. (lower thread) tension
[Adjustment standard]
Inner rotary hook assy. (lower thread) tension must be 0.1 to 0.12N (10 to 12g).
[Adjustment procedure]
1. Set the bobbin (the schappe spun thread #60) in the inner rotary hook assy., and pass the thread.
2. Pull the thread with the tension gauge, and turn the spring adjusting screw, to adjust the tension to 0.1 to 0.12N
(10 to 12g).
3. After adjustment, apply a small amount of the thread locker to the spring adjusting screw.
XA9153001 Tension gauge 30 (0.3N)
0.1 - 0.12mm
(10 - 12g)
Schappe spun
thread #60
Sprig adjusting screw
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