Needle is backward; thread path is incorrect; tension is too tight.
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Needle inserted backwards; incorrect tension; rough spot on hook. zoje a6000-g 02 manual
Use the or - buttons to navigate to the speed parameter (typically Parameter 01 on this drive system). Press S (Set/Save) to modify the value.
The manual also provides guidance on more in-depth maintenance, such as adjusting the height and lean of the feed dog and ensuring the needle and hook are perfectly synchronized. Needle is backward; thread path is incorrect; tension
Check for improper threading or too much tension.
The lists several critical safety rules: Needle inserted backwards; incorrect tension; rough spot on
Turn off power immediately. Check if thread is tangled inside the rotary hook or if the needle is bent and stuck. Control panel communication failure.