Singer 398054 - COMPREHENSIVE TROUBLESHOOTING; General Machine and Stitching Problems

EN– 37
PERFORMANCE CHECKLIST
GENERAL
PROBLEMS
Machine does not sew.
• Power switch is turned o󰀨. - Turn on the switch.
• Buttonhole lever is not raised when sewing stitch patterns. - Raise the buttonhole lever.
• Buttonhole lever is not lowered when sewing buttonhole. - Lower the buttonhole lever.
• Bobbin winder is engaged. - Disengage the bobbin winder.
Machine jams/knocks.
• Thread is caught in the bobbin case. - Clean the bobbin case.
• Needle is damaged. - Replace the needle.
Fabric does not move.
• Presser foot is not lowered - Lower the presser foot.
• Stitch length is too short - Lengthen stitch length.
STITCHING PROBLEMS
Machine skips stitches.
• Needle is not all the way up into needle clamp. - Replace the needle.
• Needle is bent or blunt. - Replace the needle.
• Machine is not threaded correctly. - Threading the thread again.
• Thread is caught in the bobbin case. - Clean the bobbin case.
Stitches are irregular.
• Needle size is not correct for thread and fabric. - Reinstall the needle.
• Machine is not threaded correctly. - Threading the thread again.
• Top thread tension is too loose. - Adjust the top tension.
• Fabric is being pulled or pushed against machine feeding action. - Guide it gently.
• Bobbin has not been wound evenly. - Rewind the bobbin.
Needle breaks.
• Fabric is being pulled or pushed against machine feeding action. - Guide it gently.
• Needle size is not correct for thread and fabric. - Reinstall the needle.
• Needle is not all the way up into the needle clamp. - Replace the needle.
• Twin needle is being used but stitch width is set too wide. - Adjust the stitch width.
• Too much thread appears on the underside of stitching. - Clean the unnecessary thread.
• Upper thread not correctly thread. - Threading the thread again.