63
PROBLEM TIP or PAGEREMEDYPROBABLE CAUSE
Needle Breaks.
Puckering. The size of the needle hole
in the throat plate is 2.0mm
and the standard needle and
thread is :
Cotton thread : #50-70
Silk thread : #75-120
Needle DB×K5#9-14
Rayon thread : #30-60
Polyester thread : #40
Replace the needle.
Use proper needle size.
Adjust the distance between
the hook point and the
needle.
Install the needle correctly.
Make sure the screws on the
needle plate are snug.
Check the position of the
needle bar to be sure that
the needle is centered in the
hole of the plate.
Adjust the tensions.
Loosen tension of presser
foot spring.
Change the needle.
Use the proper size needle.
Tip of the needle is dull,
worn or damaged.
Needle is wrong size for the
thread.
Needle and hook point are
touching.
Needle is installed
incorrectly.
Needle is striking the throat
plate.
Upper and lower thread
tension is too tight.
Presser foot is not adjusted
correctly.
Needle is damaged, dull or
the wrong size.
Hole in the throat plate is
too small for the size of the
needle.
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