Troubleshooting - Silvercrest SON 90 A1 Operating Instructions Manual

Troubleshooting

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