Baby Lock Ovation (BLES8) Instruction and Reference Guide - Manual (Page 85)

Stitch Unbalanced:
1. Is the serger threaded correctly?
2. Is the proper presser foot on the serger?
3. Is the correct needle inserted and threaded?
Chain or Cover Stitch unbalanced:
1. Is the thread in the tensions?
2. Are the tensions set correctly for the chain/cover needles?
3. Is the tension dial set correctly for the chain looper?
4. Is the chain looper threaded correctly?
5. Is the needle thread(s) in the correct tension disk?
Overlock Stitching unbalanced:
1. Is the stitch selector on the proper setting?
2. Is the thread well seated in the thread slots?
3. Is the Upper & Lower looper thread fine-tuning knob positioned correctly?
Note: If you change the position of the Upper & Lower looper thread fine-tuning knob
and the stitch is unbalanced, return the knob to the center position and recheck the
stitch.
Looper threading difficulties:
1. Is the thread end in the proper threading port?
2. Is at least 1/2 inch (1.2cm) of the thread end in the threading port3
3. Is there at least 22 inches (56cm) of loose thread beyond the thread guide above the
threading port?
4. Is the upper looper positioning knob set at "UP" position?
5. Is there a kink or twist in the 22 inch (56cm) of thread to restrict the flow into the threading
port?
6. Is the thread caught to prevent going through the loopers?
Poor Cutting:
1. Are the cutting blade(s) dull?
2. Have you sewn over a straight pin?
3. Is the upper blade in the locked position?
4. Have the cutting blades been improperly replaced?
5. Is the fabric being pulled from the rear of the machine while sewing?
Wave Stitch is not formed:
1. Is the machine threaded correctly? Check each thread path carefully.
2. Is the machine set for 3-Thread Wave sewing?
3. Is the Wave/Overlock Selector Lever set on "WAVE"?
4. For rolled wave edging, is the stitch length dial set for "ROLLED HEM" ?
5. Is the Stitch Selector Lever set correctly? Set the Stitch Selector Lever at "B" for 3-Thread
Wave Stitch or "C" for 3-Thread Rolled Wave Stitch.
M
A
I
N
T
E
N
A
N
C
E
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Troubleshooting (Cont.)