Baby Lock Diana (BL480A) Instruction and Reference Guide - Manual (Page 69)

31. TROUBLESHOOTING CHART
68
Problem
Fabric does not feed well
Needle breaks
Thread breaks
Stitch skip
Irregular stitches
Fabric puckers
Irregular trimming
Fabric jams
Machine does not operate
Page
29
30
30
13
33
13
13
14~27
28
13
6
69
32~48
6
13
13
13
14~27
30
69
39~48
28
14~27
39~51
28
69
29
30
64
64
7
28
7
Solution
- Increase presser foot pressure for heavy weight fabric.
- Decrease presser foot pressure for lightweight fabric.
- Do not pull fabric while sewing.
- Tighten needle set screw.
- Use a larger needle on heavy fabrics.
- Check for tangled or caught thread.
- Insert needle correctly.
- Insert new needle, current needle may be bent or have a blunt point.
- Use only high quality thread.
- Loosen thread tension.
- Insert new needles, current needles may be bent or have a blunt point.
Use only recommended needles HAx1 / ELx705
- Tighten needle set screw.
- Insert needles correctly.
- Change type or size of needles.
- Check threading.
- Increase presser foot pressure.
- Use a high quality thread.
- Check for tangled or caught thread.
- Check threading.
- Check for tangled or caught thread.
- Use high quality thread.
- Shorten stitch length.
- Decrease presser foot pressure for lightweight fabrics.
- Replace one or both knives.
- Check for tangled or caught thread.
- Compress thick layers of fabric with conventional machine before
sewing with overlock.
- Lengthen stitch length.
- Insert needle correctly.
- Check threading.
- Balance thread tension.
- Loosen thread tension.
- Check alignment of knives.
- Close front cover before sewing.
- Connect machine to power source.