typical GC0303D, Operation Instructions Manual

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16. Adjusting the thread tension (Fig.14)
1
2
Needle thread
Bobbin thread
●
Stitch seam when needle thread tension is too weak
●
increase the needle thread tension
●
decrease the bobbin thread tension
●
Stitch seam when needle thread tension is too strong
●
decrease the needle thread tension
●
increase the bobbin thread tension
Bobbin thread
Decrease increase
Increase
decrease
Normal stitch
17. Adjusting the presser foot pressure
(Fig.15)
Decrease
Increase
Decrease
Increase
<Bobbin thread tension>
Adjust by turning the screw ① until the bobbin case
drops gently by its own weight while the thread end
coming out of the bobbin case is held.
<Needle thread tension>
After adjust the bobbin thread tension, adjust the
needle thread tension so that a good, even stitch
seam is obtained.
1.Lower the presser foot;
2.Adjust by turning the thread tension nut
② .
<Adjusting the presser foot pressure>
1.Loosen the lock nut ① ;
2.Turn the adjusting screw ② to adjust the
pressure of presser foot, if it's not enough,
please turn the screw
⑤ to increase the
pressure.
＊ The pressure should be as week as possible,
but strong enough so that the material doesn't
slip.
3. Tighten the nut
① .
<Adjusting the walking foot presser>
4. Loosen the nut ③ ;
5. Turn the screw ④ clockwise to increase the
pressure, on the contrary, turn the screw ④
counterclockwise to decrease the pressure;
6. Tighten the nut
③ .