Silvercrest SON 90 A1 - Manual (Page 146)

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Troubleshooting
Problem Cause Solution
Needles break
• Needles are bent, blunt or damaged at the
points.
• Fit new needles.
• Needles are not correctly inserted. • Insert the needles into the retainers correctly.
• You have pulled the material too heftily. • Carefully guide the material with both hands.
Thread breaks
• Yarn has not been correctly threaded. • Thread the yarn correctly.
• Thread tension is too high. • Reduce the thread tension.
• Needles are not correctly inserted. • Insert the needles into the retainers correctly.
Stitches are omitted
• Needles are bent, blunt or damaged at the
points.
• Fit new needles.
• Needles are not correctly inserted. • Insert the needles into the retainers correctly.
• Yarn has not been correctly threaded. • Check the course of the individual threads.
Stitches are irregular
• Thread tension is not correct. • Correct the thread tension.
• Thread is trapped. • Check the course of the individual threads.
Seams cause wrinkles
• Thread tension is too high. • Adjust the thread tension.
• Yarn has not been correctly threaded. • Thread the yarn correctly.
• Thread is blocked. • Check the course of the individual threads.
• Differential feed motion not adjusted. • Correctly adjust the differential transport.
Material is not cut off cleanly • Blades are blunt or improperly fitted. • Exchange the blade or reinsert it correctly.
Material edges ruffle themselves • Too much material in a stitch. • Altering the seam width.
IB_64780_SON 90 A1_LB5 09.03.2011 16:22 Uhr Seite 144