Seam
puckering
Patterns are
distorted
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. The stitch length is too long for the
fabric.
5. The presser foot pressure is not
correctly adjusted.
1. The correct presser foot is not used.
2. The needle thread tension is too tight.
1. Select the correct foot.
2. Loosen the thread tension.
1. Lossen the thread tension.
2. Rethread the machine.
3. Choose a needle to suit the thread and
fabric.
4. Make stitch dense.
5. Adjusting the presser foot pressure.
The sewing
machine
doesn't
operate
1. The machine is not turned on.
1. Turn on the machine.
The
machine
jams
Remove the upper thread and bobbin
case, turn the handwheel backwards
and forwards by hand and remove the
thread remnants.
The
machine is
noisy
1. Fluff have collected on the hook or
needle bar.
2. The needle is damaged.
1. Clean the hook and feed dog as
described.
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.
Problem
Cause
Correction
Reference
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.
1. Thread is caught in the hook.
2. The feed dogs are packed with lint.
2. Connect the power line plug to the
electric outlet.
2. The machine is not plugged in.
Trouble Shooting
18
14
21
--
18
32-33
18
79
79
17
--
79
21
13
8
8
--
81
