What to do when – Sears 385.1884180 User Manual
Page 63
Attention! The text in this document has been recognized automatically. To view the original document, you can use the "Original mode".
What to Do When
SECTION 4. PERFORMANCE PROBLEMS CHART-
PROBLEM
PROBABLE CAUSE
CORRECTION
Irregular Stitches
Incorrect size needle.
Improper threading.
Loose upper thread tension.
Pulling fabric.
Loose presser foot.
Unevenly wound bobbin.
Nicks or burrs at hole of rteedle plate.
Choose correct size needle for thread and tabnc.
Rethread machine.
Tighten upper thread tension.
Do not pull fabric; guide it gently.
Reset presser toot.
Rewind bobbin.
Replace needle plate, or polish off burrs comptetely.
Breaking Needle
Pulling fabric.
Incorrect size needle.
Incorrect setting of needle.
Loose presser foot.
Do not pui! fabric; guide it gently.
Choose correct size needle tor thread and fabric.
Reset needle.
Reset presser toot.
Bunching of Thread
Upper and lower threads not drawn back
under presser toot before starting seam.
When starting a seam be sure to draw both threads under and
back of presser toot about
4"
and hold until a few stitches are
formed.
Puckering
Incorrect thread tension.
Using two different sizes or kinds of thread.
Bent or blunt needle.
Loose presser foot.
Fabric too sheer or too soft.
Reset thread tension.
Upper thread and bobbin thread should be same size and kind,
insert new needle.
Reset presser foot.
Use underlay of tissue paper.
61