I have a Necchi 537FA and I want to know what the knob (on the right hand side) with the dot and knit symbol does. This knob is the last one on the right hand side. Thanks in advance for the help.

YOU TURN THE DIAL IF IT HAS ONE

Order them by the machine and the model. Let the seller sweat the details.

537FA
https://www.drdanessmh.com/nechgrbt1.html


https://www.google.com/search?safe=off&rlz=1C1QJDB_enCA643CA644&sxsrf=ALeKk02cHbrrsW9-m8LTjoIAoyBqR8phxg%3A1603907882056&ei=KrGZX6OEA9mttQbdoaqoBQ&q=necchi+537fa+belt+replacement

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Suspect the machine is seizing due to lack of regular cleaning and oiling.


Wheel on right side that controls the needle up and down is very tight...

It's an older mechanical machine that has not been used for a long time and probably has not been cleaned or oiled. It is seizing from old dry oil. Avoid using the machine until it has been oiled or the motor could be damaged.

Wheel on right side that controls the needle up and down is very tight...

Try this web site:

http://www.sewingpartsonline.com/needle-threader-singer-503277.aspx

You can purchase a copy of your manual here: Necchi 537 Instruction Manual

sure, put on the buttonhole foot after putting a button into it and using the screw knob to set the length you want.
Turn stitch length knob and stitch width knobs to zero, (always set them to zero first to avoid wear on the stitch selection mechanisim) then turn the left stitch selector knob to the blue button hole symbol. Now turn middle knob stitch width, to the blue buttonhole symbol. Now turn right knob stitch length to blue 1, sew down the first side of your buttonhole until foot slide in the buttonhole foot reaches end stop. raise needle and turn stitch length to blue 2, and sew three bar tacks across buttonhole. Again, raise needle and then turn stitch length to blue 3 and sew back down otherside of buttonhole until you reach the end stop. Needle up, turn length know to blue 4 and sew three bartacks to end. there is a last blue symbol dot on stitch length knob, this will sew a stitch in place to tie off the ends. Raise pressure foot, remove your work and draw top threads to underside with a needle, and tie off or use a dot of fray stop. Done! if you don't have a manual you could email me and I'll send you a copy of mine, tallygirl98 at yahoo dot com.

it's the same size as a night light bulb. That's how I replaced mine. You can pick one up at any hardware or dept store.

does anyb ody have a manual i can download