8. TROUBLE SHOOTING
8-1 NEEDLE THREADS ARE UNBALANCED ;
* Is the serger threaded correctly?
See Quick Reference Guide
* Are the threads snapped in the head guide?
See Instruction Book P.23
* Is the stitch selector positioned correctly?
See Quick Reference Guide
* Is the looper thread fine-tuning screw positioned correctly?
See Instruction Book P.16
* Are the threads recommended high quality? See Instruction Book P.7
* Is the needle thread sensor cable positioned correctly?
See P9, 4-6
* Is the needle thread sensor cable adjusted correctly? See P11, 5
8-2 LOOPER THREADS ARE UNBALANCED ;
* Is the serger threaded correctly?
See Quick Reference Guide
* Are the threads snapped in the head guide?
See Instruction Book P.20
* Is the stitch selector positioned correctly?
See Quick Reference Guide
* Is the looper thread fine-tuning screw positioned correctly?
See Instruction Book P.16
* Are the threads recommended high quality? See Instruction Book P.7
* Is the looper thread sensor cable positioned correctly? See P9, 4-6
* Is the looper thread sensor cable adjusted correctly? See P11, 5
8-3 THREAD BREAKS ;
* Is the serger threaded correctly?
See Quick Reference Guide
* Are the threads snapped in the head guide?
See Instruction Book P.20,23
* Is the stitch selector positioned correctly?
See Quick Reference Guide
* Is the looper thread fine-tuning screw positioned correctly?
See Instruction Book P.16
* Are the threads recommended high quality? See Instruction Book P.7
8-4 JET AIR THREADER DOES NOT WORK
*Is air deflated from pump?
See P13, 67
*Are pipes connected properly?
See P13, 6
*Are there any lints or thread in pipes?
15
8-5 WAVE STITCH IS NOT FORMED;
*Is the machine threaded correctly? See Quick Reference Guide
*Is the machine set for 3-Thread Wave stitching? See Instruction Book P.41
*Is the Wave Selector shows "W" ? See Instruction Book P.41
*For Rolled Wave Edging, is the stitch length dial set for "ROLLED HEM" ? See Instruction Book P.42
*Is the Stitch Selector set correctly? Set the Stitch Selector at "B" for 3-Thread Wave Stitch
or "C" for 3-Thread Rolled Wave Stitch. See Instruction Book P.42,43