Bobbin threading instructions for Necchi 544 sewing machine

Yes quality of thread could definitely affect sewing, as will a blunt/old/wrong size needle for the material used. Also must have same thread in bobbin and needle also corect thread and needle size for material sewn plus correct tension for that material too. Could be lint or tangled threads underneath needle plate too.

when you put the bobbin in the carrier make sure you have about 6" of thread out
next adjust the needle thread tension right up

The following may be helpful:

How to Thread Necchi Sewing Machine

https://www.scribd.com/doc/294739520/Necchi-3537-3577-Instruction-Manual

http://www.sewusa.com/Sewing_Machine_Manuals/Necchi_Sewing_Machines.htm

Perhaps a manual would be helpful:

http://freenecchisewingmachinefiles.weebly.com/

Necchi 542 and 544 Lydia Sewing Machine Threading Diagram

Necchi Lydia 3 Models 542 544 series Part III Stitches Buttonholes

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Necchi 544 manual free

Instruction Manual Necchi 544 Lydia 3

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Timing is out...probably due to a recent jam...this is an overview.http://www.sewusa.com/Sewing_Machine_Repair/Sewing%20Machine%20Hook%20Timing.htm

Serviced more than 2 years ago ??
Overdue

try www.sewusa.com there are threading diagrams for some Necchi models. even if yours isnt there the bobbin should be similar.

Threading guide - http://www.sewusa.com/Threading_Diagrams/Threading_Pages/Necchi_Sewing_Machine_Threading/Necchi_542_544_threading_Diagram.htm


Make sure the presser foot is up when threading any sewing machine.

there should be a way to disengage the bobbin winder. I had a machine that had a switch in the center of the handwheel and even though it would be in the off position I still had to turn the handwheel till it clicked.

There is a site that has instructions with how to thread the machine properly. Click here for the www.sewusa.com threading section