– 104 –
8-4) Feeding is inappropriate. 4-A) The parallel level of the feed Replace the current feed dog with new one.
dog is inappropriate.
4-B) The feed dog is aslant mounted. Mount the feed dog appropriately.
4-C) The feeder bar has a backlash Eliminate the backlash in the state of slightly pressing the
in the right-left direction top, bottom, and horizontal feeder bar pins.
8-5) Pressing is inappropriate. 5-A) The presser is floating. Readjust the position of the presser bar holder.
5-B) The parallel level of the presser Replace the presser, or loosen the presser bar holding
is inappropriate. screw and correct the foot bend.
5-C) The pressure is too low. Increase the pressure of the presser.
8-6) Threading is inappropriate. 6-A) Threading of the needle thread Correct threading.
is improper.
6-B) The needle bar thread guide is Try using B1418227T00 or B1418552A00.
defective.
9. Material breakage 9-1) The needle is defective. 1-A) The needle heat is too high. Use silicon.
1-B) The needle is too thick. Use a needle as thin as possible.
1-C) The needle tip is blunt. Replace the needle.
1-D) The shape of the needle tip is Use a ballpoint needle. (KN, S, J, B, U, Y, etc.)
inappropriate.
(different needle type)
9-2) The speed is too high. Reduce the speed. (prevention of needle heat)
9-3) The material is excessively tense. 3-A) The needle hole of the throat Use a throat plate with a larger needle hole.
plate is too small.
3-B) The pressure is too high. Reduce the pressure as low as possible.
3-C) The height of the presser tooth Lower the height of the presser tooth as low as possible.
is too high.
9-4) The room humidity is too low. Keep the humidity at approx. 65% to prevent needle heat,
electrification, and friction.
9-5) The feeding pitch is too small. Increase the feeding pitch as large as possible.
Trouble Case (1) Case (2) Check and Corrective measures
From the previous page
To Next Page
Loading...
Need help?
General
