26. TROUBLESHOOTING CHART
Problem
Solution
Page
Fabric does not
— Lengthen stitch length
23
feed well
— Increase presser foot pressure for heavy weight
fabric
38
— Decrease presser foot pressure for light weight
fabric
38
Needle breaks
— Insert needle correctly
8
— Do not pull fabric while sewing
18
— Tighten needle set screw
8
— Use a larger needle on heavy fabrics
39
Thread breaks
— Check threading
10-17
— Check for tangled or caught thread
22
— Insert needle correctly
8
— Insert new needle, current needle may be bent or
have a blunt point
8
— Use a high quality thread
39
— Loosen thread tension
19-21
Stitches skip
— Insert new needle, current needle may be bent or
have a blunt point
8
— Tighten needle set screw
8
— Insert needle correctly
8
— Change type or size of needle
4
— Check threading
10-17
— Increase presser foot pressure
38
— Use a high quality thread
39
Irregular stitches
— Balance thread tension
19-21
— Check for tangled or caught thread
22
— Check threading
10-17
Fabric puckers
— Loosen thread tension
1 9 - 2 1
— Check for tangled or caught thread
22
- Use high quality light weight thread
39
— Shorten stitch length
23
— Decrease presser foot pressure for light weight
fabrics
38
Irregular trimming
— Check alignment of knives
41
— Replace one or both knives
41
Fabric jams
— Close looper cover before sewing
6
- Check for tangled or caught thread
—
Compress thick layers of fabric with conventional
machine before sewing with overlock
22
Machine does not
operate
— Connect machine to power source
6
43
