Set the tension to the number recommended in the manual for the type of fabric you are sewing.
The manual will also indicate the needle size according to fabric. Make sure when you change needles that the flat side is toward the back of the machine.
Always thread a sewing machine with the presser foot up.
This opens the tension and lets the thread "seat" into the tension and then the thread can be properly feed to the needle according to the tension setting.
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Set the tension to the number recommended in the manual for the type of fabric you are sewing.
The manual will also indicate the needle size according to fabric. Make sure when you change needles that the flat side is toward the back of the machine.
Always thread a sewing machine with the presser foot up.
This opens the tension and lets the thread "seat" into the tension and then the thread can be properly feed to the needle according to the tension setting.