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4. CHECKING PERFORMANCE PROBLEMS
PROBLEM
PROBABLE CAUSE
CORRECTION
Irregular Stitches
Breaking Needle
Puckering
1. Incorrect Thread Tension(s).
2. Incorrect size Needle.
3. Improper Threading.
4. Pulling fabric.
5. Loose Presser Foot.
1. Reset thread tension (s).
2. Choose correct size Needle for
Thread and Fabric.
3. Re-thread machine.
4. Do not pull Fabric; guide it gently.
5. Reset Presser Foot.
1. Pulling fabric.
2. Incorrect size Needle.
3. Incorrect setting of Needle.
4. Loose Presser Foot.
1. Do not pull Fabric; guide it gently.
2. Choose correct size Needle for
Thread and Fabric.
3. Reset Needle.
4. Reset Presser Foot.
1. Incorrect Thread Tension
(s).
2. Bent or blunt Needle.
3. Differential feed is set
Incorrectly.
1. Reset Thread Tension (s).
2. Insert new Needle.
3. Set it at less than 1.
Wavering
Differential feed is set Incorrectly.
Set it at 1 or at more than 1.
For knitted fabrics.
Skipping Stitches
1. Improper Threading.
2. Incorrect size Needle.
3. Bent or blunt Needle.
4. Incorrect setting of Needle.
1. Reset thread machine.
2. Choose correct size Needle
for Thread and Fabric.
3. Insert new Needle.
4. Reset Needle.
Breaking Threads
1. Improper Threading.
2. Bent needle.
3. Thread Tension (s) too tight.
4. Incorrect setting of Needle.
5. Thread Spool tangled.
6. Thread Guide Pole not extended.
1. Re-thread machine.
2. Insert new Needle.
3. Reset thread tension (s).
4. Reset needle.
5. Reset spool properly.
6. Fully extend Guide Pole.
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