The Parts of a Sewing Machine
A tour of every main part of a basic domestic sewing machine and what each one does, so the controls make sense before you touch them.
What you will learn
- Naming the main parts
- Knowing what each control does
- Finding things in the manual
Read this before you switch the machine on
All domestic machines work the same way: a needle carries the upper thread down through the fabric, a second thread from the bobbin (a small spool under the needle) is caught by it, and the two threads lock together to make a stitch. The feed dogs (small toothed bars under the fabric) move the fabric along between stitches.
Controls differ by model. Some machines have dials where others have buttons or a screen, and parts sit in different places. Use this page to learn what each part does, then check your manual for where each one is on your machine, and for model-specific threading, needle installation, bobbin type and maintenance.
Diagram
- Spool pin
- Thread guides
- Tension dial
- Take-up lever
- Needle clamp and needle
- Presser foot
- Feed dogs
- Needle plate
- Bobbin and bobbin case
- Presser-foot lifter
- Stitch selector
- Stitch length control
- Reverse lever or button
- Handwheel
- Foot pedal
Part by part
| Part | What it does |
|---|---|
| Presser foot | A small metal or plastic foot that presses the fabric flat against the feed dogs so the fabric moves forward evenly. Different feet are made for different jobs. The one fitted when you buy the machine is the all-purpose foot. |
| Needle and needle clamp | The needle carries the upper thread through the fabric. The needle clamp is the screw-tightened holder at the bottom of the needle bar that grips the top of the needle. Needles have one flat side on the shank (the top end); the flat side goes in the direction your manual shows. |
| Needle plate (throat plate) | The metal plate under the needle with a small hole for the needle and slots for the feed dogs. It is usually marked with seam allowance lines, measured from the needle. |
| Feed dogs | Rows of small teeth that rise through the needle plate, grip the underside of the fabric and move it back one stitch at a time. They only work when the presser foot is down. |
| Bobbin and bobbin case | The bobbin is a small spool holding the lower thread. The bobbin case holds the bobbin in place and controls how freely it unwinds. Some machines drop the bobbin in from the top. Others load it from the front. Use only the bobbin type your manual names. |
| Spool pin | The pin that holds the spool of thread. It may stand upright or lie flat. Many machines have a second pin for winding a bobbin. |
| Thread guides | Small hooks, slots or loops that hold the thread on its path from spool to needle so it feeds smoothly. |
| Take-up lever | The metal arm that moves up and down at the front of the machine. It pulls thread from the spool to make each stitch and then tightens the stitch. The thread must pass through its eye. |
| Tension dial | Sets how tightly the upper thread is gripped between two small discs. A normal setting is shown in the manual, often a number near the middle of the dial. |
| Stitch selector | A dial, buttons or a screen used to choose the stitch: straight, zigzag, stretch or decorative. |
| Stitch length control | Sets how long each stitch is. A normal stitch is about 2.5 mm. Longer is used for basting and topstitching. Shorter is used for fine fabric and for securing. |
| Reverse lever or button | Makes the fabric travel backwards while you sew. It is used to lock seam ends. Most machines sew in reverse only while you hold the control down. |
| Handwheel | The large wheel on the right side of the machine. Always turn it toward you (counter-clockwise as you face the machine). It moves the needle by hand, which is useful for careful starts and for raising the needle. |
| Foot pedal | The control under your foot. Pressing harder sews faster. Lifting your foot stops the machine. |
| Presser-foot lifter | A lever, usually at the back or side of the needle area, that raises and lowers the presser foot. It also releases the tension discs, so the foot must be up when you thread the machine. |
Rules that apply to every machine
Keep fingers at least 1 in (2.5 cm) from the needle while the machine is running. Switch off and unplug before changing the needle or cleaning. Sew slowly while you learn.
Keep your manual. If you have lost it, most makers post a free copy online under the model number printed on the machine.
Tips for a neat result
- Put a small sticky note on each control with its name until you remember them.
- Turn the handwheel slowly by hand to watch the take-up lever, needle and feed dogs work together.
Common mistakes and fixes
The handwheel feels stuck or the thread jams after turning it.
You probably turned it away from you. Always turn toward you. Remove the fabric and check the bobbin area for tangled thread.
The fabric does not move forward.
The presser foot is probably up, or the feed dogs are lowered for darning. Lower the foot and check the feed-dog control in your manual.
Check your result
- You can point to every part in the table on your own machine.
- You know which way to turn the handwheel and where your manual keeps the model-specific details.