SWF MA-6 - Page 68

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Puckering
Trimming failure
① Excessive thread tension
② Excessive pressure of
presser foot
③ Needle failure -
worn out/damaged needle
tip
needle is too large for
thread
④ Needle hole is too large for
needle
① Poor connection, bad
quality of trimming solenoid
② Bad connection
③ X, Y driver TR damaged
■ Adjust tension
■ Change presser foot spring
■ Change needle
■ Use adequate size of
needle
■ Check and change solenoid
and solenoid connection
■ Check connector
■ Change X, Y driver
■ SWF needle
holes are 2.0mm
large. SWF
specification for
needle & thread are:
Inspection & Repair CauseError Type Reference
Cotton : #50~70
Rayon : #75~120
Needle : DB×K5 #9~#14