Troubleshooting - Tristar SM-6000 Manual De Usuario

Trouble shooting
Problem
Upper thread breaks
Lower thread breaks.
Skipped stitches
Needle breaks
Loose stitches
Seams puckering
Cause
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. The lower thread is not
inserted correctly.
2. The upper thread tension is
too loose.
1. The needlenis not inserted
correctly.
2. The needle is damaged.
3. The wrong size needle has
been used.
4. The foot is not attached
correctly.
1.The needle is damaged.
2.The needle is not inserted
correctly.
3.Wrong needle size for the
fabric.
1. The machine is not
threated correctly.
2. The bobbin case is not
correctly threated.
3. Needle/fabric/thread
combination is wrong.
4. Thread tension wrong.
1.The needle is too large for
fabric.
2. The stitch length is wrongly
adjusted.
3. The thread tension is too
tight.
20
Correction
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 bobbin and
rewind the bobbin.
6.Replace the needle.
1.Check the threading
carefully.
2.adjust the upper thread
tension.
1.Remove and reinsert needle
(flat side towards the back).
2. Insert a new needle.
3.Choose a needle to suit the
the thread and fabric.
4.Check and attach correctly.
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. Check and attach correctly.
1.Check the threading.
2. Thread the bobbin case as
illustraded.
3. The needle size must suit
the fabric and thread.
4. Correct the thread tension.
1.Select a finer needle.
2.Readjust the stitch length.
3.Loosen the thread tension.