Trouble shooting guide
Problem
Cause
Correction
Upper thread
breaks
1.The machine is not threaded correctly
2.The thread tension is too tight
3.The thread is too thick for the needle
4.The needle is not inserted correctly
5.The thread is round wound the spool
pin
6.The needle is damaged.
1.Rethread the machine
2.Reduce the thread tension(lower
number)
3.Select a larger needle
4.Remove and reinsert the needle (flat
side towards the back)
5.Remove the reel and wind thread onto
reel
6.Replace the needle
Lower thread
breaks
Skipped
stitches
Needle
breaks
Loose
stitches
Seams
pucking
The machine
is noisy
The machine
jams
1.The lower thread is not threaded correctly
2.The upper thread tension is too loose
1.Check the threading carefully
2.Adjust the upper thread tension
1.The needle is not inserted correctly
2.The needle is damaged
3.The wrong size needle has been used.
4.The foot is not attached correctly
1.Remove and reinsert needle (flat side
towards the back)
2.Insert a new needle
3.Choose a needle to suit the thread and
fabric
4.Check and attach correctly
1.The needle is damaged
2.The needle is not correctly inserted
3.Wrong needle size for the fabric
4.The wrong foot is attached.
1.Insert a new needle
2.Insert the needle correctly (flat side
towards the back)
3.Choose a needle to suit the thread and
fabric
4.Correct the thread tension
1.The machine is not correctly threaded
2.The bobbin case is not correctly threaded
3.Needle/fabric/thread combination is wrong
4.Thread tension wrong
1.Check the threading
2.Thread the bobbin case as illustrated
3.The needle size must suit the fabric and
thread
4.Correct the thread tension
1.The needle size is too large for fabric
2.The stitch length is wrongly adjusted
3.The thread tension is too tight
1.Select a finer needle
2.Readjust the stitch length
3.Loosen the thread tension
1.Poor quality thread
2.The bobbin is wrongly threaded
3.Fabric has been pulled
Uneven stitches,
uneven feed
1.The machine must be lubricated
2.Fluff or iil have collected on the hook or
needle bar
3.Poor quality oil has been used
4.Fabric has been pulled
1.Thread is caught in the bobbin case
1.Select a finer needle
2.Remove bobbin case and rethread and
insert correctly
3.Do not pull on the fabric while sewing,
let it be taken up by the machine.
1.Lubricate as described
2.Clean the hook and feed dog as
described
3.Only use good quality sewing machine
oil
4.Replace the needle
1.Cut the tip of the thread, remove the
bobbin, tidy up the caught thread
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Details of the machine
1
2
3
4
5
6
7
8
9
10
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12
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14
15
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20
21
23
22
1.Reverse sewing lever
2.Pattern selector dial
3.Hand wheel
4.Bobbin stopper
5.Bobbin winder
6.Spool pin
7.Handle
8.Winding thread guide
9.Upper thread guide
10.Thread take-up lever
11.Thread tension
release bar
12.Thread tension dial
13.Thread cutter
14.Needle clamp screw
15.Presser foot
16.Needle plate
17.Sewing table
18.Feed dogs
19.Presser foot lever
20.Presser foot holder
21.ON/OFF Switch
22.Foot control receptacle
23.AC/DC adaptor
2
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