SunStar SC 8200J Series - Thread Tension; Thread Tension Adjustment; Adjustment of Presser Bar Pressure

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Thread Tension
1) Thread Tension Adjustment
A. Turn the upper thread adjusting nut ① to properly
adjust the upper thread tension.
B. Turn the lower thread adjusting nut ② to properly
adjust the lower thread tension.
2) Adjustment of Presser Bar Pressure
Use the pressure adjusting nut ① to adjust the pressure
of the presser bar.
①
②
②