Adjusting The Upper Thread Trailing Length After Thread Trimming - Brother T-8421D Instruction Manual

Adjusting the upper thread
trailing length after thread
trimming
Related Models:
T-8422D/T-8452D/T-8722D/T-8752D
• At the time of thread trimming, the thread tension is
loosened and tension is applied by the pretension
(1) only. The normal trailing length for the upper
thread is 35 mm or more. If adjustment is necessary,
adjust by turning the pretension (1).
If the tension of the pretension (1) is increased, the
lengths of the threads trailing from the needle tips
will be reduced; if the tension is reduced, the
lengths will be increased. If the tension of the
pretension (1) is increased, the lengths of the
threads trailing from the needle tips will be
reduced; if the tension is reduced, the lengths will
be increased.
Related Information
• Adjusting the thread tension on page 62
65