Mitsubishi PLK-E1010 Instruction Manual

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Well balanced tension

The upper thread is tight or the bobbin thread is loose

The upper thread is loose or the bobbin thread is tight

(1) Bobbin thread tension Adjust the bobbin thread tension with the thread tension adjusting screw (NO.2) on the bobbin case (NO.1). The thread tension becomes loose if turn the thread tension adjusting screw (NO.2) to the counterclockwise, and the thread tension becomes tight if turn it to the clockwise. (2) Upper thread tension Adjust the upper thread tension based on the bobbin thread tension. For this adjustment, turn the thread tension adjusting nut (NO.3). The upper tread tension becomes tight if turn the thread tension adjusting nut (NO.3) to the clockwise, and the upper thread tension becomes loose if turns it to the counterclockwise.

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