To adjust bobbin tension, Threading the bobbin case – SINGER W511 User Manual
Page 10
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THREADING THE BOBBIN CASE
Pull thread at least 3 inches from
bobbin. Insert bobbin in bobbin
case so that thread will unravel
clockwise.
Pull thread into slot of bobbin
case as shown in Fig. 2.
■ Tension Spring
Fig. 3
Draw thread under the tension
spring and into the fork-shaped
opening of the spring as shown
in Fig. 3.
Pull thread through hole in
bobbin case finger as shown in
Fig. 4. (Recommended for
zigzag sewing only)
Fig. 5
TO ADJUST BOBBIN TENSION:
• Turn screw on side of bobbin
case clockwise to increase
tension.
• Turn screw on side of bobbin
case counterclockwise to
decrease tension.
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