Your sewing machine: parts, setup and safe habits
What a lockstitch machine does, its parts named against your own manual, a workable table and light, the recall check, and the safety habits that come first.
- Start here: the essentials
- 1. How a sewing machine makes a stitch
- 2. The parts, named against your manual
- 3. Mechanical, computerized, and the serger
- 4. Finding and reading your manual
- 5. Table, chair and light
- 6. Safe habits at the machine
- 7. The recall check, and a borrowed or secondhand machine
- 8. If you are buying a machine
- 9. See it: Dana's machine on the kitchen table
- 10. Practice: one hour with the machine
- 11. Your sewing
- 12. Check your work
- 13. Knowledge check and scenario
Start here Essentials
At minimum, know which machine you have, get its manual, check it against the recall list, set it up where you can see the needle, and run it once without thread. Everything marked Go deeper can wait.
- Find the make and model, then get the manual. Look on the body and the base for the maker's name and a model number (finding your manual).
- Search the recall list for that make and model. Write the date and the result on the machine sheet (the recall check).
- Set the machine on a table at about elbow height, with a lamp aimed at the needle. Put the lamp on the side away from the hand you write with (table, chair and light).
- Name ten parts on the machine from the manual's diagram. Touch each one as you name it (the parts).
- Run the foot control with the presser foot down and no thread, slow then fast. Keep your fingers away from the needle (safe habits).
Minimum time: about one hour. Done when: the machine sheet has the make, the model, where the manual is, and the date and result of the recall check.
1. How a sewing machine makes a stitch Understand
A home sewing machine makes a lockstitch: two threads, one from above and one from below, that loop around each other inside the fabric. The upper thread comes off a spool on top of the machine and runs down to the needle. The lower thread comes off a bobbin, a small spool that sits under the fabric. Every stitch you sew is one interlock of those two threads. Physical principle
The cycle for one stitch runs like this:
- The needle goes down. It carries the upper thread through the fabric and below the plate the fabric rests on.
- A loop forms. As the needle starts back up, the thread on one side of it slackens and stands out as a small loop. The scarf, a scooped notch just above the needle's eye, gives that loop room to form; SCHMETZ's needle guide says the scarf is what lets the hook grab the thread under the plate.
- The hook catches the loop. The hook (on some older machines a shuttle) is a pointed part that turns or swings around the bobbin. It catches the loop and carries it all the way around the bobbin, so the upper thread now encircles the bobbin thread.
- The take-up lever pulls the stitch tight. The take-up lever, the arm that bobs up and down on the front of the machine, rises and draws the extra upper thread back up. The interlock is pulled up into the fabric.
- The fabric moves on. The feed dogs, toothed bars under the fabric, rise, push the fabric back by one stitch length, and drop away. The needle comes down again a stitch further along.
Two settings decide where the interlock ends up. The tension discs squeeze the upper thread as it passes; the bobbin case has its own small spring that squeezes the lower thread. When the two pulls match, the interlock sits midway between the layers of fabric, and NMSU's maintenance guide calls that the perfect stitch (NMSU Guide C-102, Sewing Machine Maintenance). Stitching and tension teaches you to read and balance it. Physical principle
The cycle explains most of the advice in Needle, bobbin and threading, Stitching and tension and Troubleshooting and care. A needle in backwards puts the scarf away from the hook, so the hook misses the loop: a skipped stitch. Thread that misses the tension discs or the take-up lever is not pulled tight, so it piles up under the fabric.
Watch the hook catch the thread
After Needle, bobbin and threading, with the machine threaded, switched off and unplugged:
- Open the bobbin cover. The door under the free arm, or the clear cover beside the needle.
- Turn the hand wheel slowly toward you. Watch the needle go down and the loop form as it starts to rise.
- Watch the hook's point. It passes the scarf, catches the loop and carries it around the bobbin; the take-up lever then draws it up.
- Close the cover before you plug the machine back in.
On a drop-in machine the hook turns flat; on a front-loading machine it turns upright. Both do the same job.
2. The parts, named against your manual
Makers put these parts in different places and sometimes give them different names. Use your manual's labelled drawing to find each part on yours; the table says what each part does. Product-specific
| Part | What it does |
|---|---|
| Spool pin | Holds the spool of upper thread. Upright, or flat with a cap. |
| Thread guides | Hooks and slots that lead the upper thread along its path. |
| Tension dial and tension discs | The discs squeeze the upper thread; the dial sets how hard. Raising the presser foot opens the discs (Needle, bobbin and threading). |
| Take-up lever | Pulls each stitch tight and feeds thread for the next one. |
| Needle and needle clamp | The needle carries the upper thread; the clamp and its screw hold the needle in the needle bar. |
| Presser foot and lever | The foot holds the fabric down on the feed dogs. The lever, usually at the back or side of the head, raises and lowers it. |
| Feed dogs | Toothed bars that move the fabric under the foot. |
| Needle plate (throat plate) | The metal plate under the foot, with the needle hole and engraved seam-guide lines. |
| Bobbin and bobbin case | The bobbin holds the lower thread. The case holds the bobbin and has a spring that sets the lower thread's tension. |
| Bobbin winder | A small spindle that fills a bobbin from the spool. |
| Hand wheel | Turns the machine by hand. Turned toward you, it raises and lowers the needle one stitch at a time. |
| Stitch selector | Chooses straight, zigzag, buttonhole and any other stitches. A dial on mechanical machines, buttons or a screen on computerized ones. |
| Stitch length and width controls | Length sets how far the fabric moves per stitch; width sets how far a zigzag swings sideways. Stitching and tension covers both. |
| Reverse lever (or button) | Sews backward while held, to lock the start and end of a seam. |
| Foot control | The pedal that runs the motor: the harder you press, the faster it sews. |
| Power switch and cord | Turns the machine and its light on and off. |
| Free arm | The narrow bed left when the extension table slides off, for sleeves and pant legs. |
Two layouts for the bobbin are common, and you need to know which you have before Needle, bobbin and threading:
- Front-loading. The bobbin sits in a removable metal bobbin case that you take out through a door in front of or under the free arm. Singer's M3200 manual is an example: you pull the case out by its latch, drop the bobbin in so the thread runs clockwise, and leave a 6 in tail (Singer M3200 instruction manual). Product-specific
- Top drop-in. The bobbin drops into a case built into the machine, under a clear cover beside the needle. Brother's CP100X manual is an example: the bobbin goes in so the thread unwinds counterclockwise, and its bobbin is a Class 15 type (Brother CP100X operation manual). Product-specific
The two manuals give opposite directions for the bobbin thread, and each is right for its machine. The ten parts to find on the first day: hand wheel, presser foot lever, needle and clamp, bobbin cover, stitch selector, length control, reverse lever, power switch, foot control and spool pin.
3. Mechanical, computerized, and the serger
New Mexico State University's guide to buying a machine sorts home machines into four kinds (NMSU Guide C-203, Buying a Sewing Machine):
| Kind | What it does | How you tell |
|---|---|---|
| Straight-stitch | Sews forward and backward only. The guide calls it suitable for mending and routine sewing. | No zigzag setting on the stitch control |
| Mechanical | Adds zigzag and stretch stitches, buttonholes and edge finishing, and on some models a blind hem. Stitches are chosen with hand controls. | Dials and levers; no screen |
| Electronic or computerized | Everything a mechanical zigzag machine does, with stitches chosen by button and the maker's preset length and width, which you can change. | Buttons, a touch panel or a screen |
| Embroidery and sewing | A computerized machine that also moves an embroidery hoop under the needle. | A hoop attachment and stored designs |
The machine sheet also has an "electronic" choice. NMSU groups electronic and computerized machines together; if your manual calls yours electronic, use its word.
This manual needs four stitches: a straight stitch, a zigzag, a buttonhole (four-step or one-step) and, if your machine has it, a blind hem. NMSU's description of a mechanical machine covers the first three, and the blind hem on some models. Closures and elastic covers four-step and one-step buttonholes. Convention
If you do not know which kind you have: dials that choose stitches mean mechanical; buttons or a screen mean computerized. The manual confirms it.
The serger is a different machine
A serger, also called an overlock machine, trims the edge of the fabric, stitches the seam and wraps thread over the raw edge in one pass. NMSU's guide to overlock machines says it uses loopers instead of a bobbin, and that it does not replace a conventional sewing machine (NMSU Guide C-218, Selecting an Overlock Sewing Machine). This manual is written for a lockstitch machine. Seams and a first piece finishes seam edges with a zigzag instead. Convention
4. Finding and reading your manual
NMSU's maintenance guide calls the machine's use and care booklet the best reference for that machine's care, and says some machines are designed to be oil-free, so the booklet's directions come first (NMSU Guide C-102). Everything in this manual about oiling, cleaning, bobbin tension, threading paths and dial numbers is "one maker's manual says," and your manual decides for your machine. Product-specific
Find the make and model
- Look at the front and top. The maker's name is usually on the front of the arm, sometimes with a model name.
- Unplug it and look at the back and the base. Model and serial numbers are often on a plate or sticker there. Tip the machine onto a towel to see the base.
- Write down every number you find. Model and serial numbers look alike; the manual's cover shows which is the model. Both go on the machine sheet.
Check all three places before you decide the machine has no plate.
Get the manual
NMSU's guide gives three routes for a missing booklet: a local sewing machine center, the manufacturer, or a copy downloaded online, and says to have the machine's name, model, serial number and approximate age at hand. In practice:
- Online. Search the maker's support pages for the model number. A copy hosted elsewhere is usable if the model on its cover matches your plate exactly.
- A dealer. NMSU names a local sewing machine center first. A dealer for that brand may be able to identify the machine from the model plate and order a manual.
- Close but not exact. One manual often covers a family of models (Singer's M3200 manual covers eight). A manual for a neighbouring model is a guide to parts and threading; check oil, cleaning and bobbin parts with a dealer.
Write where the manual is on the machine sheet. A printed copy of the threading and bobbin pages beside the machine saves a search.
What to read first
- The safety instructions, usually the first pages.
- The parts drawing.
- The bobbin, threading and needle pages, for Needle, bobbin and threading.
- Cleaning and oiling, for Troubleshooting and care: does it tell the owner to oil, and where?
Your manual outranks this manual, above all on oiling, compressed air and extension cords; Troubleshooting and care compares what the makers say about oiling and compressed air. We do not assess wiring. A frayed or cracked cord, a damaged plug or foot control, sparks, a shock, a burning smell, or a motor or foot control that runs hot means stop, unplug it and take it to a dealer or service technician. One older extension guide says to tape a damaged cord (NMSU C-102); Brother's and Singer's manuals say not to use a machine with a damaged cord and to return it to a dealer, BERNINA's says not to use it, and we follow the makers. A recall notice that says to destroy and discard a machine means the machine is not used.
5. Table, chair and light
OSHA's eTool on sewing workstations was written for factory sewing, but its basic measurements apply to a home table (OSHA, Sewing Station Design):
- The work at elbow height. OSHA says the chair is at the right height "when the work surface is at elbow height," with the wrists kept straight. Too low and you hunch; too high and your shoulders rise. Convention
- Feet flat. The whole sole of each foot rests on the floor. The foot control sits where your right or left foot reaches it without stretching.
- Knees slightly above the seat. OSHA says the back of the knee should be slightly higher than the seat of the chair.
- Short breaks. OSHA recommends frequent, short breaks to stretch or change position.
At home, adjust the chair to the table. A firm cushion raises you; a footrest or a stack of books gives your feet a flat place if your chair is now high. Check with your hands on the bed in front of the needle: forearms roughly level, shoulders relaxed. Fix a table that wobbles at speed before anything else. Leave room left of the needle and behind the machine for fabric. Test it
Light on the needle
OSHA's eTool on fine work says poor lighting "may cause eye fatigue and headache" and that adjustable task lighting should shine on the work area (OSHA, Fine Work). Colorado State University's ergonomics office gives two placement points for a task light: it should be adjustable, and placed on the side opposite your writing hand to cut shadows from the hand and arm (Colorado State University, Lighting Ergonomics). Convention
So a right-handed sewer puts the lamp on the left, a left-handed sewer on the right, aimed at the needle with the bulb out of your eyes.
Longer sessions
Colorado State's guide gives 50 footcandles or more, as needed, for detailed or visually demanding work. A footcandle is about 10.8 lux, so that is roughly 540 lux or more on the needle area. Convention
OSHA's fine-work eTool also says that for close work that is hard to see, the table can go 2 to 4 in (5 to 10 cm) above elbow height, For long sessions:
- Set a timer for breaks; OSHA gives no interval, so pick one.
- Keep supplies at table height so you do not twist and reach. (OSHA, Stitching).
- If sewing causes pain or numbness, stop and see a doctor.
On a shared table, write a five-minute setup routine on a card (cushion, lamp, foot control, wall plug) and keep it with the machine.
6. Safe habits at the machine
Every maker's manual we read opens with a similar list of safety instructions. These apply from the first day.
The needle and the foot control. Keep your fingers away from the needle while the machine runs; Singer's and Brother's manuals both say special care is needed around it. Switch the machine off before you put your fingers near the needle to thread it, change the needle or foot, or put in a bobbin, because a foot resting on the pedal can start it. Do not push or pull the fabric while it sews; Singer's and Brother's LX-3125 manuals say this can deflect the needle and break it. Keep the foot control out of the way of feet and chair legs, with nothing stored on it.
Power and cords
- Plug it into the wall. Brother's LX-3125 manual says to plug the machine directly into the wall and not to use extension cords (Brother LX-3125 manual) (the CP100X manual agrees). Singer's and BERNINA's manuals do not mention extension cords; we follow Brother's advice for every machine. Product-specific
- Unplug it when you leave it. Singer's M3200 manual says a machine should not be left unattended when plugged in, and to unplug it after use and before cleaning or oiling. Brother's manuals agree. Product-specific
- Switch off for anything near the needle. Singer says to switch off to thread, change the needle or foot, or put in a bobbin. bernette's b05 manual goes further for a needle change: switch off and disconnect it from the power supply (bernette b05 manual, Changing the Needle). Needle, bobbin and threading uses the stricter version.
- Keep the vents clear. Singer, Brother and BERNINA all say to keep the vents free of lint.
- A damaged cord goes to a dealer. Singer's manual says the same for a machine that has been dropped or damaged. Ask the authority
Pins, needles and magnets
MedlinePlus, from the National Library of Medicine, notes that tailors and dressmakers often swallow pins or buttons, and that children aged 6 months to 3 years are the age group most likely to swallow a foreign object (MedlinePlus, Foreign object swallowed). Put pins straight into a pincushion or holder, not between your lips.
Pins, needles and magnets near children. Keep pins, needles, buttons, small parts and magnetic pin dishes out of young children's reach, and pick up dropped pins before children come into the room. St. Louis Children's Hospital lists sharp objects and magnets among the swallowed objects that need immediate medical evaluation regardless of symptoms (St. Louis Children's Hospital, The Baby Swallowed What?). More than one swallowed magnet, or a magnet and a steel object such as a pin, can pull together through the intestine; the CPSC's 2022 magnet rule describes that injury (CPSC, Safety Standard for Magnets, 2022). A magnetic pin dish holds exactly that combination. If a child may have swallowed a pin, needle or magnet, get medical help straight away; for severe trouble breathing, the hospital's page says to call 911.
The CPSC rule itself covers magnet products made for entertainment, jewelry and stress relief, not pin dishes, so we cite it only for the hazard. A closed tin does the dish's job when children visit. Oregon State's 4-H sheet on sewing equipment adds one machine-specific point: do not attach magnetic pin holders to computerized machines (Oregon State University Extension, 4-H Clothing Skills: Sewing Equipment). Product-specific
Children and the machine
Singer's M3200 and Brother's LX-3125 manuals both say the machine is not to be used as a toy and that close attention is needed when it is used by or near children. Unplug it and put the foot control out of reach when you step away.
Other habits worth starting now
- Do not use aerosols near the machine. Singer's and Brother's manuals both say not to operate it where aerosol sprays are used or oxygen is given.
- Do not store the machine next to an iron or a heater, as Brother's LX-3125 manual says.
- Eye protection. Singer's M3200 manual tells the user to wear safety glasses. Other manuals we read do not. We pass the instruction on as Singer's. Product-specific
The safety checklist on the machine record turns this section into ten tick boxes. It takes five minutes and is worth doing once where you sew.
7. The recall check, and a borrowed or secondhand machine
A machine from a closet, a relative or a secondhand sale has a history you do not know. Check the recall list and its condition before you sew on it.
Search the recall list
The US Consumer Product Safety Commission (CPSC) publishes every product recall it announces. Sewing machines appear in it rarely (five sewing machine recalls in the full export), but some of the recalls are for fire and shock hazards, and some no longer have a remedy. To check:
- Go to the Recalls page on cpsc.gov and search for the make. Try the make alone, then the make with "sewing machine," then the model number. Sewing machine recalls are sometimes listed under the parent company's name.
- Compare the model and serial range of any result. Recalls often cover only some serial numbers.
- Write the date and the result on the machine sheet. "No listing for this model" is a result. So is "listed; serial outside the range."
- Check the iron too. Irons and garment steamers have recalls of their own, some recent. Cutting, marking and pressing covers the iron.
The CPSC also publishes the whole recall list as a downloadable spreadsheet (CPSC recall database export, a large CSV file) if the search page will not load. Ask the authority
Three CPSC notices show what a sewing machine recall looks like:
| Date | Product | Hazard | What owners were told |
|---|---|---|---|
| June 28, 1978 | Type 213 foot pedals of Bernina machines, made late 1969 to January 1976 | A switch in the pedal could stay closed and the pedal overheat | A free thermal switch; until fitted, unplug the machine when not in use and keep objects off the pedal |
| February 7, 2006 | Husqvarna Viking Designer I sewing and embroidery machines, about 55,000 | Electrical arcing in the power supply, a fire risk; three incidents of overheating and catching fire | The page now says the remedy is no longer available: destroy and discard, do not donate or resell |
| June 1, 2011 | Elna eXcellence 740, about 600 | Internal wires could short circuit, a fire risk; one fire reported | Unplug, stop using it and return it for a free repair |
The 2006 notice is the one to remember for a secondhand machine. The CPSC's page now says the remedy is no longer available and the product is to be destroyed and discarded, not donated or resold (CPSC, recall 06-082). Twenty years on, such a machine can still turn up in a closet. A listing that says destroy means the machine is not used, however well it seems to run. Ask the authority
Look at its conditionNMSU's used-machine checklist works for a borrowed or inherited one too (NMSU Guide C-203). With the machine unplugged, look for:
- Signs it was cared for: few scratches or dents, no signs of rough use, no missing parts.
- Accessories: bobbins (of the right class; Needle, bobbin and threading), presser feet, the zipper foot.
- The foot control easy to press and spring back.
- "Wiring is in good condition," in the guide's words: for us, a cord, plug and foot control cable with no cracks, bare wire, scorch marks or tape. Anything else goes to a technician.
- Then, plugged in, running smoothly without excessive vibration or noise. On a machine unused for years, turn the hand wheel by hand first. NMSU's checklist of machine problems lists gummed oil after a long rest as a cause of a machine that runs heavily (NMSU Guide C-202), and Brother's CP100X manual says to stop and contact an authorized dealer if the hand wheel turns hard. Do not force a stiff wheel with the motor; Troubleshooting and care covers cleaning, and a wheel that stays stiff goes to a technician.
The guide also asks whether needles, bobbins and feet are still sold and whether there is local service.
8. If you are buying a machine
If you are about to buy, this manual recommends no brand or model. NMSU's buying guide gives a method instead (NMSU Guide C-203):
- Write down what you will sew, where you will use and store the machine, and how long you mean to keep it.
- Test every machine on the fabrics you usually sew. Bring fabric samples, including your first project's fabric; try the stitch length, backstitch, tension and presser foot.
- Know what the price includes. Accessories, the guarantee, a case or cabinet, lessons.
- Ask about the warranty and repairs. What it covers and excludes, who honors it, and the turnaround for repairs. The guide notes that repairs by technicians who are not factory-authorized can void the manufacturer's warranty, and suggests keeping the box for shipping.
On how long a machine lasts, the guide says the useful life of a good machine "can be 20 years or more." That is the claim we make, and it depends on care. The guide also says a used machine is worth considering. Convention
A test-sew list
One sheet per machine, so you can compare:
- Thread it and wind a bobbin yourself from the manual.
- Sew two layers of your fabric slowly and fast. Can you hold a slow speed?
- Sew over a folded seam. Does it climb over without stalling?
- Sew a zigzag, and a buttonhole on your fabric with interfacing behind it.
- Open the bobbin area and find the cleaning steps in the manual. Ask whether the owner oils it.
- Note the bobbin class and needle system, and whether the dealer stocks them.
Features this manual uses: a free arm (Hems) and a buttonhole you found easy (Closures and elastic). A needle-down setting helps at corners (Stitching and tension). Decorative stitches do not appear in this manual. Preference
9. See it: Dana's machine on the kitchen table See it
Dana Okafor is one of the four fictional people this manual follows. The details of her machine, her settings and her results are invented for the examples.
Known. Dana, 34, lives in an apartment with her partner. She has not sewn by machine before. She has her aunt's mechanical machine, bought around 2008: straight stitch, zigzag and a four-step buttonhole, with a front-loading bobbin. It has not been used in about six years. She wants to make two envelope covers for the 18 in pillow forms on her sofa.
What she did. She found the model plate under the machine and downloaded the manual; the model on its cover matches the plate. She wrote the web address on the machine sheet. She searched the CPSC recall list for the make and the model: no listing, written down with the date.
Her kitchen table left her forearms sloping up, so she put a cushion on the chair; now they are level and her feet are flat. She is right-handed, so the desk lamp sits on the left, aimed at the needle. She named ten parts from the drawing and ran the foot control with no thread, slow then fast.
Assumed. That the cord and foot control are sound, from a look: no cracks, bare wire or tape. Only a technician can test them.
Open. Whether the machine was ever serviced; there is no record. Dana records a service as optional on the care log and decides after Troubleshooting and care, once she has cleaned it and seen whether it runs cleanly. If it does not, a technician settles it.
Free sources that show this chapter's material:
- Singer M3200 instruction manual: a basic mechanical machine with a front-loading bobbin, close to Dana's. The parts drawing and the safety page are what yours will look like.
- Brother CP100X operation manual: a computerized machine with a top drop-in bobbin, for comparison with the Singer.
- NMSU Guide C-203, Buying a Sewing Machine: the machine types and the used-machine checklist, three pages.
10. Practice: one hour with the machine Practice
Minimum: the machine identified, the manual found, the recall checked, the machine set up with light on the needle, ten parts named, and the foot control run without thread. Time: about one hour. Materials: the machine, its manual (printed or on a screen), a table and chair, a lamp, a towel, a pencil, and the machine sheet open in another tab or printed.
- Unplug the machine, find its numbers and get the manual. Check the model on the cover against the plate. Write make, model, serial number and the manual's location on the sheet.
- Search the recall list. Write the date and the result. If you find a listing for your model, read the remedy before you go on; if it says to stop using or destroy the machine, stop here and follow it.
- Look at the cord, plug and foot control. No cracks, bare wire, scorch marks or tape. If you find any, stop and take the machine to a technician.
- Set it up. Steady table, work at elbow height, feet flat, lamp on the side away from your writing hand, plug in the wall.
- Name ten parts. Touch each first-day part from the manual's drawing. Note whether the bobbin is front-loading or drop-in.
- Turn the hand wheel toward you. Watch the needle and the take-up lever. Stop with the needle at its highest.
- Lower the presser foot and run it with no thread. Press gently until the needle moves slowly, then harder, then ease off, until you can hold a slow, steady speed. Fingers on the bed, away from the needle.
- Switch off and unplug it. Tick the items on the safety checklist that are true where you sew.
Listen to it. On a machine unused for years, a few slow minutes without thread let you hear it before you thread it. Grinding, a knock, a smell of burning or a motor that gets hot goes to a technician; Troubleshooting and care has the list. Write what you heard on the care log.
11. Your sewing Your sewing
12. Check your work Check your work
Criteria
- Does the machine sheet have the make, the model as printed on the machine, and where the manual is?
- Does the model on the manual's cover match the machine, or have you noted that it is a neighbouring model?
- Is there a date and a result for the recall check?
- Sitting at the machine, are your forearms about level, your feet flat, and is the needle lit from the side away from your writing hand?
- Is the machine plugged straight into a wall outlet, with the foot control clear of feet and chair legs?
- Can you name ten parts without looking at the drawing, and say whether the bobbin is front-loading or drop-in?
- Can you run the machine at a slow, steady speed?
Worked example
Dana's sheet (fictional) has the make, the model from the plate, "mechanical," "borrowed," the manual's web address, and "no listing for this model" with the date. Her forearms are level, her feet flat, the lamp on her left. She knows her bobbin is front-loading. Every criterion is met; the service question stays open until Troubleshooting and care.
Common mistakes
- Writing the serial number as the model. The model is the number the manual's cover names.
- Using a neighbouring model's manual without noting it. Oil points and bobbin parts may differ.
- Searching the recall list by make only. Search the model too, and check the serial range.
- Putting the lamp behind or in front of the machine. Behind, your head shades the needle; in front, it shines in your eyes.
- An extension cord because the outlet is far away. Move the table instead.
- Leaving the magnetic pin dish on the table when children visit. Put it in a closed tin, up high.
What is still unresolved
This chapter does not tell you whether your machine runs well or needs service. The cleaning and check order in Troubleshooting and care settle most of that, and a technician settles the rest. It does not tell you whether a cord or foot control is electrically sound; only a technician can. Your bobbin class and needle system come from the manual in Needle, bobbin and threading.