Thread Tension (4 threads) (continued)
Adjusting
the thread
tension
may be required
depending
on the type of labric and thread being
used.
Correct Tension
Upper
looper
thread
Thread Tension
Adjustment
• Set all four thread tension dials at "'3", Then sew, and check the thread tensions.
Wrong Tension
Wrong Tension
is tight and/or
thread is tight and!or
loose.
looper
thread
Loosen lower looper thread tension
and/or tighten upper looper thread
tension,
Upper looper
lhread
tension
Lower
looper
thread
lens}on
Loosen upper looper thread tension
andfor tighten lower looper thread
tension.
Upper
looper
Lower
_ooper
thread
lens_on
lhread
tension
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