Looper thread tension is out of balance (1)
The illustration shows sewing results when the lower
q
looper thread tension is too tight and/or upper looper
thread tension is too loose.
y
Remedy:
Loosen lower looper thread tension and/or tighten
r
3
4
upper looper thread tension.
w
t
q
Wrong side of fabric
w
Right side of fabric
e
Right needle thread
e
r
Left needle thread
t
Upper looper thread
y
Lower looper thread
3
Upper looper thread tension dial
4
Lower looper thread tension dial
q
r
3
4
w
t
e
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
y
62