TROUBLE SHOOTING GUIDE
Problem
1.The needle thread tension is too tight.
2.The needle thread is not threaded
correctly.
Seam
puckering
3.The needle is too heavy for the fabric
being sewn.
4.Shorten stitch length is too long for the
fabric.
1.The correct presser foot is not used.
Patterns are
2.The needle thread tension is too tight.
distorted
3.The stitch length is not suitable for the
fabric being sewn.
1.Thread is caught in the hook.
The machine
2.The feed dogs are packed with lint.
jams
1.Lint or oil have collected on the hook or
needle bar.
2.The needle is damaged.
The machine
3.Slight humming sound coming from
is noisy
internal motor.
4.Thread is caught in the hook.
5.The feed dogs are packed with lint.
1.Poor quality thread.
Uneven
2.The bobbin case is threaded wrong.
stitches,
uneven feed
3.Fabric has been pulled.
1.The machine is not turned on.
2.The Start/stop button was not pressed.
3.The presser foot lever is raised.
4.The Start/stop button was pressed, even
The sewing
through the foot controller is connected.
machine
doesn't
operate
5.A thread is caught in the hook race.
6.The machine is not plugged in.
Cause
72
Correction
1.Loosen the thread tension.
2.Rethread the machine.
3.Choose a needle to suit the thread and
fabric.
4.Make stitch dense.
1.Select the correct foot.
2.Loosen the thread tension.
3.Make stitch adjustment.
Remove the upper thread and bobbin
case. Turn the handwheel backwards and
forwards by hand and remove the thread
remnants.
1.Clean the hook and feed dog as
described.
2.Replace the needle.
3.Normal.
Remove the upper thread and bobbin
case. Turn the handwheel backwards and
forwards by hand and remove the thread
remnants.
1.Select a better quality thread.
2.Remove the bobbin case, the thread
and reinsert correctly.
3.Do not pull on the fabric while sewing,
let it be taken up by the machine.
1.Turn on the machine.
2.Press the Start/stop button.
3.Lower the presser foot lever.
4.Do not use Start/stop button when the
foot controller is con-nected. To use
Start/stop button, disconnect the foot
controller.
5.Remove the upper thread and bobbin
case. Turn the handwheel backwards
and forwards by hand and remove the
thread remnants.
6.Connect the power line plug to the
electric outlet.
Reference
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