White 7234 Instruction Book page 15

(3) Unbalanced lower looper thread wraps
round and over the face:
Tighten the thread tension of the lower looper
(Dial
4
)
or loosen the thread tension of the
upper looper (Dial
3).
(4) Unbalanced left needle thread too loose:
Tighten the thread tension of the left needle
(Dial 'U) or loosen both looper thread (Dial
and 4}).
(5) Unbalanced right needle thread too loose:
Tighten the thread tension of the right needle
(Dial
2
).
Lower
thread
Upper looper thread.
Right-hand needle thread
Tighten
Loosen
Loosen
needle thread
Tighten
Right side
Upper looper thread
Left-hand needle thread
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