Wrong side
Thread Tension Adjustment
Lower
looper
thread
Upper
looper
thread
Right side
Correct Tension
Needle thread is loose.
Lower looper thread is tight and /
or upper looper thread is loose.
Upper looper thread is tight and /
or lower looper thread is loose.
Needle thread
Lower looper
thread
Right side
of fabric
Upper
looper
thread
Wrong side
of fabric
Needle thread
Right side
Needle thread
Lower
looper
thread
Upper
looper
thread
Lower
looper
thread
Wrong side
Wrong side
Right side
Upper looper
thread
Needle thread
13
3
4
2
Thread Tension Dial
Tighten
Loosen
3
4
2
3
4
2
3
4
2
3
4
2
3
4
2
3
4
2
3
4
2
3
4
2
3
4
2
3
4
2
3
4
2
3
4
2
