Baby Lock Model BLCS, Service Manual

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8. Trouble Shooting
7. Adjustment of thread take-up
7-1 NEEDLE THREADS ARE UN BALANCED ;
* Is the BLCS threaded correctly? See Instruction Book P.14,15.
* Are the threads snapped in the head guide? See Instruction Book P.15.
* Are the threads recommended high quality? See Instruction Book P.7 .
7-2 LOOPER THREADS ARE UNBALANC ED ;
* Is the BLCS threaded correctly? See Instruction Book P.14,15.
* Are the threads snapped in the head guide? See Instruction Book P.15.
* Are the threads recommended high quality? See Instruction Book P.7.
7-3 THREAD BREAKS ;
* Is the BLCS threaded correctly? See Instruction Book P.14,15.
* Are the threads snapped in the head guide? See Instruction Book P.15.
* Are the threads recommended high quality? See Instruction Book P.7.
7-4 JET AIR THREADER DOES NOT WORK
*Is air deflated from pump? See P.13.
*Are pipes connected properly? See P.13.
*Are there any lints or thread in pipes?
7
BLCS3
Correct Position
(Thread take-up is
lowest position.)
CORRECT POSITION: When thread take-up is lowest position, thread take-up and
thread guide are same position. See illustration below.
a). Rotate the machine pully and bring thread take-up at the lowest position.
b). Loosen thread take-up height position adjusting screws.
c). Adjust the thread take-up to correct position. See illustration below.
d). Tighten the fixing screws.
Thread take-up
height position
adjusting screws