How do you replace the hypodermic on a sewing contraption? The plunger on mine broke contained by partly end week!? sewing maching needle

sewing maching needle
Scratched and stained wooden countertop?
Answers:    find the maintianance encyclopaedia that came near the machine. Find the little screwdriver that also come with the contraption.

Down the needle pole is a little button knob beside screwdriver slot in it. Loosen this and the piece of the mature needle will come out. Watch the syringe to see which side the flat part is inserted. Put the clean needle surrounded by just that passageway and tighten the little button with the screwdriver.
My boiler exploded! hose pouring out, big mess....
google the company who make the machine..