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. |
