Singer 20U-109 Instruction Manual - Page 21
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Zigzag Sewing Machine 3.14. Needle Thread Tension Adjustment Instruction Manual and Parts List Regulate needle thread tension with tension regulating knob '1', Figure 20. • more tension '-' less tension 3.15. Take-up Spring Regulation Using a screwdriver in slot of stud '1', Figure 21, regulate take-up spring tension by turning stud '1', as required. • More tension • Less tension To adjust the amount of take-up spring movement, loosen screw '2'. Figure 21, and set take-up spring height by turning the entire tension assembly '3' toward left or right, as required Securely tighten screw '2' 3.16. Bobbin Thread Tension Adjustment Regulate bobbin thread tension with tension regulating screw '1', Figure22. '+' More tension Less tension (0 Figure 20 2 3 -- Figure 21 Figure 22 -20-
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