SINGER 9210 - Manual (Page 24)

CLEANING MACHINE
I
PERFORMANCE CHECKLI
Using lint brush, remove lint or
dust from:
-presser bar
-needle bar
-remove bobbin case for cleaning
bobbin case.
-machine surface (if necessary,
dampen soft cloth and use mild
soap to clean surface)
-remove needle plate and clean
exposed area with a lint brush.
PROBLEM
Needle does not
move
Is machine connected to electrical supply?
Is power and light switch on?
Is controller connected?
Is air supply from controller clear?
Needle moves but
stitch is not formed
Is needle defective?
Is needle fully inserted into needle clamp?
Are bobbin and needle correctly threaded?
Is bobbin correctly inserted into bobbin case?
Needle breaks
Is needle straight and sharp?
Is needle correct size?
Is needle fully inserted into needle clamp?
Are controls properly set?
Are accessories correct for application?
Bobbin winding
difficulties
Is thread unwinding freely from spool?
Is bobbin winder engaged?
Is thread end securely held at start of wind?
Upper thread breaks
Is machine properly threaded?
Is thread freely unwinding from spool?
Is proper size spool cap being used?
Is needle correct size for thread?
Is upper thread tension too tight?
Is bobbin case properly inserted?
Is bobbin rim free of nicks?
Lower thread breaks
Is bobbin correctly wound?
Is bobbin correctly inserted in bobbin case?
Is bobbin case correctly threaded?
Skipped stitches
Is machine properly threaded?
Is fabric firmly held down?
Is needle correct style and size?
Is needle straight and sharp?
Fabric does not
move properly under
presser foot
Is presser foot correctly attached to machine?
Is presser foot lowered?
Is stitch length correctly set?
FOR BEST PERFORMANCE, PURCHASE ONLY GENUINE SINGER
ACCESSORIES AND REPLACEMENT PARTS.
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