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Adjustment Of Lower Thread Tension - Brother LS-1717 Service Manual

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Adjustment of lower thread tension

Lower thread tension: 0.3 - 0.35N (30 - 35g)
How to check the tension: Pull cotton thread #50 with tension gauge slowly.
1. Set cotton thread #50 in bobbin case and pull it with tension gauge.
2. Adjust the adjustment screw to tension 0.3 - 0.35N (30 - 35g)
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