CHECKING

ERFORMANCE1P PROBLEMS

WHAT

TO

DO

0

PROBLEM

Fabric not moving

Breaking Needle

Breaking Upper Thread

PROBABLE CAUSE

Feed dog down.

Machine not moving.

Stitch length dial in 0 position

Light pressure on presser foot

Incorrect setting of needle

Needle bent

Pulling fabric.

Incorrect using needle, thread and fabric.

Incorrect position of zigzag width dial.

Improper threading.

Tight upper thread tension.

Needle bent.

Nicks or burrs on shuttle.

CORRECTION

Raise feed dog.

Moving stop motion.

Moving dial to 1 4

Increase pressure on presser foot

Reset needle

Replace new needle

 

‘—Do not pull fabric.

Correct using needle, thread, and fabric.

 

-

Moving to correct position.

 

Rethread machine.

 

Loosen upper thread tension.

 

Replace new needle.

 

 

Replace shuttle, or polish off burrs

 

 

completely.

Breadkin Bobbin

Tight bobbin thread tension,

Incorrect setting of needle.

Thread

Improper threading.

 

Dust and thread in shuttle.

Machine Jamming

No oil.

Knocking Noise

Dust and thread in shuttle

-—

Loosen bobbin thread tension. Reset needle.

Reth read machine. Clean shuttle.

Need oil.

Clean shuttle

Puckering

Tension too tight

 

Reset

Sewing foot pressure too strong.

-

Regulating sewing fqot pressure.

 

-

Incorrect using fabric, needle, and thread.

--

Correct using fabric, needle and thread.

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White 1515 manual Checking ERFORMANCE1P Problems, What

1515 specifications

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