JUKI Jtron JTR-KM3680N/WSU Series Instruction Manual page 12

4.2) Threading the machine. (Please refer to machine head instructions – KS-DLR1509P)
4.3) Switch on the machine.
4.4) How to install waistband to stand and feed the waistband attachment?
4.4.1) Put waistband to its stand as in the picture.