Juki HZL-K65.Everything works when I plug it in but the red light is on the sew button preventing it from sewing.

SOURCE: buttonhole problem

Hi,
When doing the button hole....after installing the button hole foot and lowering the foot....and adding the button so the automatic button hole size is determined...you lower the button hole lever it will touch the back of the button hole foot. this holds the button hole foot in the proper position...if this lever is not all the way down...the machine blips at you...check to see that it is down all the way...I hope this helps you..It truly does all that it advertises and is a great machine...BBill01
P.S. you can adjust width and length of the stich also...see instruction manual. pg 28-30

SOURCE: singer 328k bobbin winder replacement

Follow these instructions, undo the 2 screws on the right hand side plate where the balance wheel is and take the plate off, undo the screw on the chrome stop motion wheel, undo the stop motion and take it off, take off the 2 pronged washer and notice which way it goes on, not a problem if you can't remember, you should be able to pull the balance wheel back so you can get to the screws on the winder, if you can.t and if you have a problem getting the balance wheel all the way then go the very bottom of the machine and you will see 2 big holes and one of the holes will lead you to a big screw and nylon adjuster, slacken the screw and move the nylon adjust so the belt goes slack, you can not take the balance wheel all the way off to get to the screws on the winder, take the old one off and screw the new one on, whilst you have the balance wheel off it would be wise to put some thin oil on the shaft before you put the balance wheel back on, when you have the balance wheel on and the and the belt round the pulley turn the nylon adjuster so the belt is tight and tighten up the screw, put the side plate back on, put the 3 pronged washer back on, put the stop motion wheel back on and just tighten finger tight then tighten the small screw.

SOURCE: needle will not pick up bobbin thread when sewing

double check the upper and lower tensions they often need to be changed to suit types of fabric and threads

SOURCE: Bobbin winder will not spin on sewing machine

If you take the top off you will see a tiny rubber tire that engages the winder to the handwheel. Over time they get really soft are really hard and disintgrate. If you have a local sewing shop take the old one in and get a new one to slip on it takes only a few minutes and cost usually less that $2.00

SOURCE: i need to know how and where to oil my juki

your machine is not a self oiling machine, you should put the oil on the needle bar, and to the bobbin.