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Sewing machine simple maintenance

December 20, 2023


First, on the sewing line broken, there are several causes:

1. The line is broken and is very flush. This shows that the sharper equipment is cut off. It is speculated that the sharpness of the needle on the sewing machine is too sharp: the needle of the looper is sharp and the teeth of the feed teeth are sharp (specifically, the section of the thread is broken. More than one, and not completely cut off)

Maintenance methods: Change the looper or use a file to polish the looper Replace the feed dog or use a trowel to sand the teeth

2, line break, hair, which shows that the pull is broken to guess: 1 poor quality of the sewing envelope, it is easy to pull off the 2 line is not smooth, the line has a knot / line twisted together / line seat deformation 3 needle bar position Poor

Maintenance method: Replace the sewing wire. Check that the wire/thread holder must be slightly inclined. Check if the position of the thread hole at the top of the needle bar is too low.


Second, on the sewing process, jumper

1, the needle and hook needle position is not good

Maintenance method: Adjust the position of the needle and hook according to the instructions


Third, after sewing the bag, the tail jumper, a pull line, all off

1, the needle and hook needle position is not good

2. Pinhole plate wear

3, feed teeth and presser foot clearance is too large

Maintenance method: Adjust the position of the needle and the hook according to the instructions. Replace the needle plate. Adjust the feed dog to reduce the gap between the feed dog and the presser foot.



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