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Before you call for help: Troubles and corrective measures
The following problems should not be regarded as the machine trouble. Check the following table before you call for
help from us.
Trouble
Fabric does not
1. Presser foot pressure is too low .
feed
Needle break
1. Needle is bent, or the needle point is blunt.
2. Needles are incorrectly inserted.
3. The material cloth is excessively stretched.
Thread breaks
1. The machine is incorrectly threaded.
2. Thread tension is too high.
3. Needle is incorrectly attached.
Stitch skips
1. Needle is bent or needle point is blunt.
2. Needle is incorrectly attached.
3. The machine is incorrectly threaded.
Poor stitches are
1. Thread tension is not proper.
formed
Seams flute or
1. Presser foot pressure is too high .
wave, especially
2. Differential feed is set incorrectly.
when sewing knits
Seams pucker
1. Thread tension is too high.
2. Differential feed is set incorrectly.
Motor trouble
1. The motor makes noise.
2. The motor will not rotate.
3. Unusually large sparks are emitted.
When the trouble is not corrected by the above measures, contact your local dealer.
・Specifications
Item
Number of threads
5 threads, 4 threads, 3 threads, 2
threads
Needle
130/705H
Overlocking width
Left-hand needle : 6mm
Right-hand needle : 4mm
(for roll hemming : 2mm)
Chainstitch needle : 10mm
Stitch length
1 to 4 mm
(feeding amount)
(standard stitch length : 2.5 mm)
Differential feed
No waving or fluting in knits N-2.
No puckering 0.7-N
Presser foot lift
5mm
Sewing speed
Max. 1,500 sti/min
Dimensions
315 (W) x 345 (D) x 295 (H) mm
Weight
7.4 kg
Foot control
120V .....MODEL YC-482
230V .....MODEL YC-483N
240V .....MODEL YC-483N
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Cause (reason)
Specifications
Corrective measures
• Increase the presser foot pressure by turning
the feed . presser foot pressure adjusting
screw to the right.
• Replace the needles.
• Insert the needle correctly.
• Hold the edge of the material cloth lightly
with your hand when sewing.
• Rethread the machine correctly
• Adjust the thread tension properly.
• Insert the needles correctly.
• Replace the needle.
• Insert the needles correctly.
• Rethread the machine correctly.
• Adjust the thread tension properly.
• Reduce presser foot pressure .
Adjust differential feed to N-2.
•
• Set the thread tension adjusting dial to the
smaller value.
• Adjust differential feed to 0 .7-N.
• Dealer should the carbon brush .
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