I have a Necchi 3101FA. I am trying to figure out how to release the stop motion knob so that the needle won't run while I am trying to thread the bobbin. Does anyone have any idea?

SOURCE: How do i thread the bobbin on my necchi 539

take out your bobbin and turn it the other way

SOURCE: necchi 534FB

I solved this problem for a friend,!. the needle was in the wrong way and
2 the bobbin case was not properly seated be sure you hear the 'click 'when
reinserting the bobbin case...hope this is helpful Velz

SOURCE: necchi 3101fa thread cutter on the machine

It is at the needle screw area. Item #20 on the picture.

http://www.sewingmanuals.com/Sewing_Machine_Manuals/Sewing_Machine_Manual_Pics/Necchi_Pics/Necchi_3101i.jpg

Testimonial: "Awesome dude thx was lookin for like 30 min to find a damn diagram of the machine.... lol thx again. -THCjake"

SOURCE: Necchi 215A Sewing machine Could anyone help I

Make sure the bobbin has a 3-5 inch thread tail
Then make sure the top thread has a 3-5 inch tail
Then hold the top thread tail with your fingers (away from the needle)
& use the hand wheel on the right hand side of the machine to slowly
Lower the needle in the bobbin area & see if the bobbin thread will pick
Up that way

Testimonial: "Thanks for the answer it did not work for me though"

SOURCE: I have a Necchi 3205

Hi, I've got a necchi sewing machine too, not the same model as yours.
you said you were sewing denim & the machine jamed & bent the needle, it's sounds like the machine is out of time, sometime it doesn't take much to get them out of time & would have to be serviced by a repair shop with the tools needed to fix the timing.