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Looper thread tension is out of balance (1)
The illustration shows sewing results when the lower
looper thread tension is too tight and/or upper looper
thread tension is too loose.
Remedy:
Loosen lower looper thread tension and/or tighten
upper looper thread tension.
q
Wrong side of fabric
w
Right side of fabric
e
Right needle thread
r
Left needle thread
t
Upper looper thread
y
Lower looper thread
3
Upper looper thread tension dial
4
Lower looper thread tension dial
Looper thread tension is out of balance (2)
The illustration shows sewing results when the upper
looper thread tension is too tight and/or lower looper
thread tension is too loose.
Remedy:
Loosen upper looper thread tension and/or tighten
lower looper thread tension.
3
Upper looper thread tension dial
4
Lower looper thread tension dial
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