Pfaff 3114

Untidy Buttonhole Cut
1. Buttonhole knife blunt
2. Buttonhole knife set too high
3. Blade ground at wrong angle
4. Distance between buttonhole porollsls set too wide
5. Buttonhole knife jagged
6. Buttonhole knife ground excessively
7. Distance between buttonhole porallels set too narrow
8. Insufficient annount of pressure on material
9. Knife slot in needle plate damaged
Needle Thread Trimmer Fails
1. Pieces of thread jammed between blades or trapper
2. Trimmer blades blunt
3. Trapper spring damaged by needle
4. Trapper spring slockens due to fair
wear and tear
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From the library of: Superior Sewing Machine & Supply LLC