Key points
- Loosen the stop-motion knob before winding; tighten it afterwards.
- Let the winder’s tension guide the thread; don’t hold it, and don’t overfill.
- Drop-in (66, 99): thread leads on top from right to left, under the spring, out through the slot.
- Featherweight: the bobbin turns anticlockwise when you pull the thread.
- Always bring the bobbin thread up by turning the handwheel towards you.
WindingHow to wind a bobbin on a vintage Singer
- Release the needle. Hold the handwheel with one hand and turn the knurled knob in its centre towards you. The 201K manual calls it knob 17; on the 221K it is the stop-motion screw. The handwheel now turns without moving the needle.
- Fit the bobbin on the winder spindle and push it home.
- Thread it. Take the thread from the spool through the winder’s tension guide and wind a few turns by hand.
- Engage the winder. Press it against the belt or handwheel (on the 221K, against the motor belt) and run the machine. The 201K manual says not to guide or hold the thread; the tension discs control it, and the winder stops automatically when full.
- Don’t overfill. Keep the thread below the edge of the bobbin.
- Tighten the stop-motion knob again before you sew.
If the needle still goes up and down while winding, or the machine won’t sew afterwards, the knob is not fully released or tightened; see troubleshooting.
InsertingHow to insert the bobbin, model by model
| Model | How the bobbin goes in |
|---|---|
| 15-88/15-90/15-91 | Into the bobbin case with the thread on top drawing from right to left; pull it into the slot and under the spring. Fit the case with its finger opposite the notch at the top of the shuttle and press until the latch catches. |
| 66, 99, 185 (drop-in) | Drop it in with the thread leading on top from right to left; draw the thread into the slot, back under the tension spring to the notch, then to the right. Close the slide plate with the thread coming up through its slot. |
| 201 | Place it in the case under the slide, draw the thread into slot 1, back under the spring to notch 2, then towards the right. Close the slide. |
| 221 / 222K, 301 | Put the bobbin in the case so it turns anticlockwise as the thread is pulled; take the thread through the slot and under the spring. Hold the case by its latch with the thread leading off the top, slide it onto the stud as far as it goes, release the latch and leave about 3 in of thread. |
| 27/127, 28/128 (long shuttle) | Into the shuttle so the thread draws from left to right (28 manual), then into the slot and under the spring. |
Last stepBring up the bobbin thread
Hold the end of the upper thread, turn the handwheel towards you one full turn, and pull the top thread: a loop of bobbin thread comes up through the needle plate. Pull both threads back under the presser foot, and you’re ready to sew.
QuestionsFrequently asked questions
Why won’t my Singer bobbin winder work?
The winder isn’t pressed against the belt or wheel, the belt is loose, or the stop-motion knob is not released.
Which way does the bobbin go in a Singer 66?
With the thread leading on top from right to left, under the tension spring, then out through the slot in the slide plate.
Which way does a Featherweight bobbin turn?
Anticlockwise when you pull the thread from the bobbin case.
Why is my bobbin winding unevenly?
Usually the thread isn’t through the winder tension guide, or you’re holding the thread. Let the guide control it.
ReferencesSources
These are the pages and manuals the facts in this article come from. Where they disagree, we say so in the text.
- ismacs.net/needlebar/main/manuals/singer201/index2.html
- ismacs.net/needlebar/main/manuals/221k/index2.html
- ismacs.net/needlebar/main/manuals/221k/index5.html
- ismacs.net/singer_sewing_machine_company/manuals/singer-model-15-88-89-sewing-machine-manual.pdf
- ismacs.net/singer_sewing_machine_company/manuals/singer-sewing-machine-manual-model-15-90-compressed.pdf
- ismacs.net/singer_sewing_machine_company/manuals/singer-model-66-18-sewing-machine-manual.pdf
- ismacs.net/singer_sewing_machine_company/manuals/singer-model-99-31-sewing-machine-manual.pdf
- singer-featherweight.com/blogs/schoolhouse/how-to-thread-a-featherweight-bobbin-case
- ismacs.net/singer_sewing_machine_company/manuals/singer-model-28-sewing-machine-manual.pdf
Published 24 October 2026 · Written and fact-checked by the HeirloomID editors. Spotted an error? Tell us.
