Table of Contents
Advertisement
Troubleshooting
Problem
Needles break
Thread breaks
Stitches are omitted
Stitches are irregular
Seams cause wrinkles
Material is not cut off cleanly
Material edges ruffle them-
selves
Cause
• Needles are bent, blunt or da-
maged 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 da-
maged at the points.
• Needles are not correctly inserted.
• Yarn has not been correctly
threaded.
• Incorrect needles are fitted.
• 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.
• Upper blade a is blunt or in-
correctly inserted.
• Too much material in a stitch.
- 20 -
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.
• Use the correct needles (HA x 1
or 130/705H)
• 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.
• Place the differential feed motion
at "S".
• Change the blade a or insert it
correctly.
• Alter the seam width.
Hide quick links:
Advertisement
Table of Contents
