SINGER 9340 SIGNATURE - Manual (Page 85)

80
TROUBLE SHOOTING GUIDE
Seam
puckering
1.The needle thread tension is too tight.
2.The needle thread is not threaded
correctly.
3.The needle is too heavy for the fabric
being sewn.
4.Stitch length is too long for the fabric.
1.Loosen the thread tension.
2.Rethread the machine.
3.Choose a needle to suit the thread and
fabric.
4.Shorten stitch length
Problem Cause Correction Reference
Page 19
Page 13
Page 22
Page 28
Patterns are
distorted
1.The correct presser foot is not used.
2.The needle thread tension is too tight.
3.The stitch length is not suitable for the
fabric being sewn.
1.Select the correct foot.
2.Loosen the thread tension.
3.Make a stitch adjustment and add
stabilizer to the fabric.
Page 77
Page 19
Page 28
The machine
jams
Remove the upper thread and bobbin
case. Turn the handwheel backwards and
forwards by hand and remove the thread
remnants.
1.Lint or oil have collected on the hook or
needle bar.
1.Clean the hook and feed dog as
described.
1.Thread is caught in the hook.
2.The feed dogs are packed with lint.
Page 23
Page 73
The sewing
machine
doesn't
operate
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
though the foot controller is connected.
5.A thread is caught in the hook race.
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 connected. 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.
The machine
is noisy
2.The needle is damaged. 2.Replace the needle.
Uneven
stitches,
uneven feed
1.Poor quality thread.
2.The bobbin case is threaded wrong.
3.Fabric has been pulled.
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.
4.Thread is caught in the hook.
3.Slight humming sound coming from
internal motor.
3.Normal.
5.The feed dogs are packed with lint.
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.
6.The machine is not plugged in.
Page 12
--
Page 73
Page 22
Page 9
--
Page 24
Page 17
Page 24
Page 73
Page 9
Page 73