Baby Lock evolve BLE8W, Service Manual

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