Kenmore 158.1813 - Checking Performance Problems; Troubleshooting Stitches and Thread Issues

Checking Performance Problems
WHAT To Do
PROBLEM PROBABLE CAUSE CORRECTION
Incorrect size needle . Choose correct size needle for
thread and fabric
.
Improper threading . Rethread machine .
Looseupper thread tension . Tighten
upper thread tension .
Irregular
Pulling fabric . Do not pull fabric ; guide
it gently .
Stitches
Light pressure on presser foot . Increase pressure on presser foot .
Loose presser foot . Reset presser foot .
Unevenly wound bobbin . Rewind
bobbin .
Pulling fabric .
Do not pull fabric ; guide it gently .
Breaking Incorrect size needle . Choose correct size
needle for thread and fabric .
Needle
Incorrect setting of needle . Reset needle .
Loose presser
foot . Reset presser foot .
Upper
and lower threads not drawn
foot . Bunching of
back under presser foot .
Draw both threads
back under presser
Thread
Feed dog down . Raise feed dog .
Incorrect thread tension(s) . Reset thread tension(s) .
Light
pressure on presser foot
.
Increase pressure on presser foot .
Using two different sizes or kinds
Upper
thread
and bobbin thread should be same size and kind
.
Puckering
of thread .
Bent or blunt needle . Insert new needle .
Loose presser foot .
Reset presser foot .
Fabric too sheer or too soft . Use underlay of tissue
paper
.