Brother SL-7360 Manual De Instrucciones página 56

Problem
The lower thread tension is too strong.
The lower thread
The bobbin is not turning smoothly.
breaks.
Too much thread is wound around the
bobbin.
The needle is installed incorrectly.
The needle is bent, or the needle tip is
broken.
Skipped stitches
occur.
The needle size is incorrect.
The presser foot pressure is too weak.
¡The upper thread tension is too weak.
The upper thread
¡The lower thread tension is too strong.
does not tighten.
¡The upper thread tension is too strong.
The lower thread
¡The lower thread tension is too weak.
does not tighten.
The upper and lower thread tensions are too
strong.
The presser foot pressure is too strong.
The seam is
puckered.
The needle tip is broken.
The needle is too thick.
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Possible Cause
– 44 –
Remedy
Decrease the thread tension.
Replace the bobbin or the bobbin case.
Do not wind on more than 80% of the
bobbin capacity.
Install the needle correctly.
Replace the needle.
Use a needle that is suitable for the thread.
Increase the presser foot pressure.
Adjust the thread tension.
Adjust the thread tension.
Loosen the upper and lower thread
tensions.
Decrease the presser foot pressure.
Replace the needle.
Use as thin a needle as possible.
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SL-7360