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58
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Troubles
Cause (1)
Cause (2)
Checking orders and corrective measures
From the previous page
Broken material
Bobbin is damaged.
Defective feed
Presser foot is defective.
Threading is improper.
Needle is defective.
Number of revolution is too high.
Cloth is excessively tensed.
Humidity of guide is too low.
Feed pitch is too small.
Bobbin is damaged by the bend of needle.
Parallelism of feed dog is defective.
Feed dog is slantly installed.
There is a lateral play in the feed base.
Presser foot is rising.
Parallelism of presser foot is defective.
Presser foot pressure is too low.
Threading of needle thread is wrong.
Needle bar thread guide is defective.
Heat of needle is high.
Needle is too thick.
Top end of needle is blunt.
Shape of the top end of needle is defective.
(Kind of needle)
Needle hole of throat plate is small.
Presser foot pressure is too high.
Feed dog is positioned high.
Replace the feed dog.
Correct the installation.
Remove the play in the state that the feed driving base pin and
the feed rocker base pin are slightly pressed.
Readjust the position of presser bar guide bracket.
Replace the presser foot. Or, loosen the presser bar guide bracket
screw and adjust the bend of presser foot.
Increase the presser foot pressure.
Correct the threading.
Try to use B1418227T00 or B1418552A00.
Use silicon.
Use a thin needle that is as thin as possible.
Replace the needle.
Use the ball-point needle (KN, S, J, B, U, Y, etc.)
Decrease the number of revolution.
Use the throat plate with large needle hole.
Decrease the pressure as low as possible.
Lower the position as low as possible.
Keep the humidity at approximately 65% to protect the needle
from heat and charge friction.
Make the pitch as large as possible.
Use the hook with needle guard corresponding to the needle
equivalent to #11.
For SS : 11141355, for DS : 22890404
