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Trouble shootina auide
Problem
Upper thread breaks
Cause
1 The machine is not threaded correctly
2.The thread tension is too tight
S.The thread is too thick for the needle
4. The needle is not inserted correctly
5. The thread is wound around the spool holder pin
6. The needle is damaged
Correction
1. Rethread the machine
2. Reduce the thread tension (lower number)
a.Sdect a larger needle
4. Remove and reinsert the needle (flat side towards the back)
5. Remove the reel and wind thread onto reel
S.Replace the needle
Lower thread breaks
1 The bobbin case is not inserted <»freclly
a itie bobbin case is threaded wrong
3The lower thread tension is too tight
1. Remove and reinsert the bobbin case and pull on the thread. The
thread should pull easily
2. Check both bobbin and bobbin case
S.Loosen lower thread tension as described
Skipped stitches
1 The needle is not inserted correctly
2The needle is damaged
3The wrong size needle has been used
4The foot is not attaohed correctly
1 .Remove and reinsert needle(flat side towards the back)
2.lnsert a new needle
S.Choose a needle to suit the thread and fabric
4.Check and attach correctly
Needle breaks
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
a.lnsert the needle correctly (flat side towards the back)
S.Choose a needle to suit the thread and fabric
4.Selec1 the correct foot
Loose stitches
1 The machine is not correctly threaded
2The bobbin case is not correctly threaded
S.Needle/ fabric/ thread combination is wrong
4Thread 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
Seams gather or pucker
1 The needle is too thick for the fabric
2The stitch length is wrong adjusted
3The thread tension is too tight
1.Select a finer needle
2. Readjustthe stitch length
3. Loosen the thread tension
Uneven stitches, uneven feed
1 The machine must be lubricated
2.Poor quality thread
3The bobbin case is wrong threaded
4.Fabric has been pulled
I.Take machine to dealer for proper servicing
a.Select a better quality thread
3. Remove bobbin case, thread and insert correctly
4. Do not pull on the fabric while sewing, let it be taken up by the machine
The machine is noisy
1 .Lint or oil have collected on the hodc or needle bar
2.Poor quality oil has been used
Thfi nAAdfa is riamaaed
1 .Clean the hook and feed dog as described
2.0nly use good quality sewing machine oil
S.Replace the needle
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