Possible Cause:
Thread is not unreeling smoothly off the thread spool.
Solution:
Check the thread spool to ensure thread is not getting caught.
Possible Cause:
Using thread that is poor quality or has uneven filament.
Solution:
Use good quality thread with a smooth, even filament.
Possible Cause:
Stitch length is set too short.
Solution:
Adjust stitch length to a longer setting (page 14).
Possible Cause:
Differential Feed is not set in the correct position for the fabric being sewn.
Solution:
Adjust the differential feed (page 12).
Irregular Trimming
Possible Cause:
Upper and lower fabric cutters are not in proper position.
Solution:
Check alignment of cutters (page 24).
Possible Cause:
Cutter(s) are damaged or worn out.
Solution:
Replace one or both cutters (page 23—page 24).
Fabric Jams
Possible Cause:
Upper and lower fabric cutters are not in proper position.
Solution:
Check alignment of cutters (page 24).
Possible Cause:
Thread is not unreeling smoothly off the thread spool.
Solution:
Check the thread spool to ensure thread is not getting caught.
Possible Cause:
Too much fabric thickness.
Solution:
Compress thick layers with conventional sewing machine before sewing on your overlock machine.
Technical Specifications
Sewing Speed
Maximum 1200 ± 100 rpm
Stitch Length
1–4mm
Needle Bar Stroke
25 ± 3mm
Needles
SINGER® EL #2022 #90/14
Stitch Width
2.3–7mm
Presser Foot Rise
5–7mm
Number of Needles
1–2
Differential Feed Ratio
0.7–2.0
Weight
6.3kg
Number of Threads
2–4
Type of Lamp
LED light
Machine Dimensions
Width: 334mm
Depth: 286mm
Height: 279mm
Protection Class
II (Europe)
Power Rating
Machine: 100Watt
LED Light: 100mWatt
Rated Voltage
120V/60Hz (North America)
230V/50Hz (Europe)
26 – Machine Maintenance
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