Why is the lower thread winding amount incorrect on my Brother Sewing Machine?
If the lower thread winding amount is incorrect, the bobbin presser position may be incorrect. Adjust the position of the bobbin presser.
Why does the lower thread wind to one side on my Brother BAS-342H Sewing Machine?
If the lower thread winds to one side, the height of the bobbin winder tension assembly may be incorrect. Adjust the height of the bobbin winder tension assembly.
How to fix lower thread that is not tight on my Brother BAS-342H?
If the lower thread isn't tight, it may be because the lower thread tension is too weak, in which case you should increase it. Alternatively, the upper thread tension may be too strong, and you should reduce it.
Why is the upper thread trailing length irregular on my Brother BAS-342H?
Irregular upper thread trailing length can occur if the movable or fixed knife is blunt; sharpen or replace them as needed. Adjust the sub-tension if it is too weak. Increase the tension of the thread take-up spring if it's too weak.
Why is the lower thread breaking on my Brother BAS-342H?
Lower thread breakage can be caused by damage to the needle hole plate or bobbin case; repair these parts by buffing. If the lower thread tension is too strong, reduce it.
What to do if thread unravels at the sewing start on my Brother BAS-342H Sewing Machine?
If thread unravels at the start of sewing, it could be due to several reasons. The needle might be too thick, so choose a suitable needle. Ensure the upper thread trailing length is adequate, leaving approximately 42 mm between the needle hole and the end of the thread when threading. Adjust the sub-tension to ensure the upper thread trailing length is about 42 mm after thread trimming. Set the feeding amount of the lower thread to approximately 30 mm. Also, adjust the sewing start speed if it's too fast.
What causes the needle to break on my Brother Sewing Machine?
A needle might break for several reasons. Check if the needle is bent and replace it if necessary. If the needle is too thin, select one that is suitable for the sewing conditions. If the needle and rotary hook tip are touching, adjust the driver needle guard. Adjust the needle clearance. If the needle and rotary hook timing is incorrect, adjust the timing. If the feed timing is too slow, advance it.
General| Brand | Brother |
|---|---|
| Model | BAS-342H |
| Category | Sewing Machine |
| Language | English |
Identifies the Brother BAS-341H/BAS-342H Programmable Electronic Pattern Sewer and its instruction manual.
Explains danger, warning, and caution indications and their meanings for safe machine operation.
Details safety notes, environmental requirements, and precautions for safe operation.
Covers safety advice for installation, general sewing practices, and cleaning procedures.
Provides safety guidelines for performing maintenance and inspection on the sewing machine.
Details warning labels on the machine and provides essential first aid information.
Lists and explains error codes related to switches, motors, feed mechanisms, communication, and data.
Provides solutions for common problems like machine not starting, work clamp issues, and thread problems.
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