Janome Sewing Machine Needle Threader - SMALL FIXING SCREW
This is the very small set screw which holds the thread in place onto the threader bar
TO SECURE THE 2 PART THREADER PART NO. 862626004 IN PLACE on the MC15000 AT9 AT7 MC14000 500E MC9400QCP
its best to remove the needle when replacing the threader then put a new needle in for testing, size 80/12 or 90/14
This will only fit the models listed or that take this part number
Part No. 000230403
MC15000 AT9 AT7 MC14000 500E MC9400QCP