Pfaff 238-0 User Manual

21. Trouble Shooting
Machine Skips Stitches
Cause:
1. incorrect threading.
2. Wrong needle.
3. Needle inserted incorrectly.
4. Needle too fine for the thread used.
5. Needle too thick for the thread used.
6. Needle bent.
7. Needle set too high or too low.
8. Hook set too far from needle (correct clearance .004", or 0.1 mm).
9. Hook timed Incorrectly.
10. Material
tacky or heavily dressed.
11. Thread twisted too much.
Thread Breaks
Cause:
1. Any of the above-mentioned conditions may cause thread breakage.
2. Thread tension too tight.
3. Poor or knotty thread used.
4. Thread rotten due to extremely long and dry storage.
5. Poor-quality thread used.
6. Thread jammed In hook race.
7. Burrs or sharp edges on needle plate slot.
8. Thread snarled up on spool pin.
9.
Thread check spring timed Incorrectly.
10. Blunt needle point.
Needle Breaks
Cause:
1. Bent needle strikes hook point.
2. Thread too heavy for needle used.
3. Hook setting disturbed after thread jamming.
4. Upper tension too tight.
5. Needle deflected by hard spots In material.
6. Needle bent because material Is pushed or pulled.
7. Machine feeds while needle Is down in material.
8. Hook set too close to needle.
9. Needle too fine for the fabric.
10. Thread snarled up on spool pin.
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From the library of: Superior Sewing Machine & Supply LLC

Pfaff 238-0 Specifications

General

Brand	Pfaff
Model	238-0
Category	Sewing Machine
Language	English