Pfaff 3114 - PFAFF 3114: Trouble Shooting Guide

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40. Trouble Shooting
Following is a list of some of the more common machine troubles end the
probable couses of these troubles:
Thread Breaking
1. Needle rusty
2. Needle poorly polished
3. Needle too fine for thread
4. Needle point damaged
5. Needle plate dcmaged by needle
6. Thread snarled up
7. Poor quality thread used
8. Thread rotten as a result of excessive storage
9. Thread too light for buttonhole
10. Needle thread tension too tight
11. Bobbin thread tension not weak enough
12. Fixed blade of bobbin thread trimmer set too close to needle hole
13. Machine threaded incorrectly
14. Point of hook damaged
15. Needle guard damaged by needle
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From the library of: Superior Sewing Machine & Supply LLC