Try this as a demonstration, most are under the needle,
may have to remove the storage space first, pull forward,
sideways or lift. You can just look for your make if not.
https://youtu.be/xo3RLvjq1y0
Hope this tip helps.
SOURCE: Elna 2002 Sewing Machine
Can't get a manual for you but here's how to wind a bobbin.
Guide your thread from the spool holder to the bobbin thread tension device on the top left side of the machine.(That's the round assembly that is about 1/2 inch in diameter with a screw in the center of it.) Pull the thread in the front and wrap it to the back and continue towards the bobbin winder on the right side top. Wrap thread around the bobbin, place the bobbin on the spindle sticking up. Release the handwheel(either by pulling out on the center of the wheel or twisting on the center of the wheel). Press on the foot control. It should stop winding when it is full.
To thread the machine
all machines thread the same. TTN tension, take up,
needle.
Beginning with the spool, guide the
thread through the thread guides to the tension assembly. Pull the thread
through the tension assembly and test it to make sure the tension is working
correctly.
(To do this test, adjust your tension setting to normal or medium or 5 or
something in the middle. Raise the presser foot and pull the thread through the
tension. It should pull easily!! Lower the presser foot and pull the thread. It
should pull noticeably harder.) If it passes this test, continue up through the
take up lever,then down through the thread guides to the needle. Make sure your
needle is fully inserted and turned the correct way. Flat side to the back and it threads front to back
Sewman7
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: 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: bobbin winder won't spin Cannot load bobbin
Can be dirt or particles that have made it stuck with friction and so a resetting /overhauling with good oiling, degresing will resolve the matter, provided there is wearing off in the drive.
First use a degreasing spray before you can disemble.
Pre-tension disk 
Bobbin winder shaft 
Bobbin
Pre-tension disk 
Pulling it in as far as possible
Spring on the shaft 
Groove of the bobbin
Sewing speed controller
Wound evenly 
Wound poorly146 views
Usually answered in minutes!
×