ALDI Stirling Black Edition MD 17329 Instruction Manual page 22

Checking the thread tension
Correct stitching
The tension of the upper and lower thread should be sufficient to
ensure that the threads interlace in the middle of the fabric.
The fabric remains smooth and does not pucker.
Incorrect types of stitching
Upper thread is too tight and pulls the lower thread up. The lower
thread is visible on the upper fabric layer.
Solution:
Reduce the upper thread tension by turning the upper thread tension
regulator to a lower number.
Upper thread is too loose. The lower thread pulls the upper thread
down. The upper thread is visible on the underside of the fabric layer.
Solution:
Increase the upper thread tension by turning the upper thread tension
regulator to a higher number.
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1300 884 987 MODEL: MD 17329 PRODUCT CODE: 13651 05/2020
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