1.The needle thread tension is too tight.
1.Loosen the thread tension.
2.The needle thread is not threaded
correctly.
3.The needle is too heavy for the fabric
being sewn.
3.Choose a needle to suit the thread and
fabric.
4.Shorten stitch length is too long for the
fabric.
1.The correct presser foot is not used.
1.Select the correct foot.
2.The needle thread tension is too tight.
2.Loosen the thread tension .
3.The stitch length is not suitable for the
fabric being sewn.
3.Make stitch adjustment.
1.Thread is caught in the hook.
Remove the upper thread and bobbin
case. Turn the handwheel backwards
and forwards by hand and remove the
thread remnants.
2.The feed dogs are packed with lint.
1.Lint or oil have collected on the hook or
needle bar.
1.Clean the hook and feed dog as
described.
3.Slight humming sound coming from
internal motor.
4.Thread is caught in the hook.
Remove the upper thread and bobbin
case. Turn the handwheel backwards
and forwards by hand and remove the
thread remnants.
5.The feed dogs are packed with lint.
Uneven
stitches,
uneven feed
1.Select a better quality thread.
2.The bobbin case is threaded wrong.
2.Remove the bobbin case, the thread
and reinsert correctly.
3.Fabric has been pulled.
3.Do not pull on the fabric while sewing,
let it be taken up by the machine.
The sewing
machine
doesn't
operate
1.The machine is not turned on.
2.The Start/stop button was not pressed.
2.Press the Start/stop button.
3.The presser foot lifter is raised.
3.Lower the presser foot lifter.
4.The Start/stop button was pressed,
even through the foot controller is
connected.
4.Do not use Start/stop button when the
foot controller is con-nected. To use
Start/stop button, disconnect the foot
controller.
5.A thread is caught in the hook race.
5.Remove the upper thread and bobbin
case. Turn the handwheel backwards
and forwards by hand and remove the
thread remnants.
6.The machine is not plugged in.
6.Connect the power line plug to the
electric outlet.
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