Manual

Th['ead Tension Adjustment (2-Needle 4-Thread)
Set all four thread tension dials at "4". Then sew, and check the thread tensions,
f
Needle thread on the left is loose.
\
Wrong side_
Needle thread ._
"ontheleft_ _
"I l:l_-__
NeedLe thread _1_
on the right _.__
Right side i=1_
"-'---Upper
looper
thread
Loower
looper
thread
Tighten needle thread tension on the left.
!
tI _,
Needle thread on the right is loose.
Upper
thread
Needle thread Right
on the right side Lower
looper
thread
on the left
Tighten needle thread tension on the right.
!
Lower looper thread is tight and/or upper Upper looper thread is tight and/or lower
looper thread is loose, looper thread is loose.
Lower _._4_
Ioeper'__
thread_,,,,,_.___.,1=_
Needl_ght i_._
on the right side _1=1_
Ne thdleeithr ead"_[i_
"" Upper
looper
thread
Lower looper
on the right thread
thread
on the left
Loosen lower looper thread tension and/or
tighten upper looper thread tension.
!
Loosen upper looper thread tension and/or
tighten lower looper thread tension.
!
!
J
15