The checks and guides below come from the official manuals for this model.
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Troubleshooting
Find the problem you are experiencing
Upper thread breaks6 checks
The machine is not threaded correctly.
Rethread the machine.
The thread tension is too tight.
Reduce the thread tension. (lower number)
The thread is too thick for the needle.
Select a larger needle.
The needle is not inserted correctly.
Remove and reinsert the needle. (flat side towards the back)
The thread is wound around the spool holder pin.
Remove the reel and wind thread onto reel.
The needle is damaged.
Replace the needle.
Lower thread breaks2 checks
The bobbin case is not inserted correctly.
Remove and reinsert the bobbin case and pull on the thread. The thread should pull easily.
The bobbin case is threaded wrong.
Check both bobbin and bobbin case.
Skipped stitches4 checks
The needle is not inserted correctly.
Remove and reinsert needle. (flat side towards the back)
The needle is damaged.
Insert a new needle.
The wrong size or type of needle has been used.
Choose a needle to suit the thread and fabric.
The foot is not attached correctly.
Check and attach correctly.
Needle breaks4 checks
The needle is damaged.
Insert a new needle.
The needle is not correctly inserted.
Insert the needle correctly. (flat side towards the back)
Wrong needle size for the fabric.
Choose a needle to suit the thread and fabric.
The wrong foot is attached.
Select the correct foot.
Loose stitches4 checks
The machine is not correctly threaded.
Check the threading.
The bobbin case is not correctly threaded.
Thread the bobbin case as illustrated.
Needle/ fabric/ thread combination is wrong.
The needle size must suit the fabric and thread.
Thread tension wrong.
Correct the thread tension.
Seams gather or pucker3 checks
The needle is too thick for the fabric.
Select a finer needle.
The stitch length is incorrectly adjusted.
Readjust the stitch length.
The thread tension is too tight.
Loosen the thread tension.
Uneven stitches, uneven feed3 checks
Poor quality thread.
Select a better quality thread.
The bobbin case is incorrectly threaded.
Remove bobbin case, thread and insert correctly.
Fabric has been pulled.
Do not pull on the fabric while sewing, let it be drawn through by the machine.
The machine is noisy2 checks
Lint or oil have collected on the hook or needlebar.
Clean the hook and feed teeth as described.
The needle is damaged.
Replace the needle.
The machine jams1 check
Thread is caught in the hook.
Remove the upper thread and bobbin case, turn the handwheel backwards and forwards by hand and remove the thread.
Guides
Important safety instructions
Instructions from the manual
Use and service the machine safely18 steps
Keep these household-machine instructions near the machine and pass them to a new owner.
Keep the electrical socket accessible.
Unplug immediately after use and before cleaning, removing covers, lubricating or other user servicing.
Do not use as a toy; pay close attention near children.
Use only the purposes and recommended attachments in this manual.
Never operate with a damaged cord or plug, malfunction, drop damage or water exposure; return it to an authorized dealer or service center for examination, repair or adjustment.
Keep ventilation and foot control clear of lint, dust and loose cloth.
Keep fingers from moving parts, particularly the needle.
Use the proper needle plate and straight needles.
Do not push or pull fabric while stitching.
Wear safety glasses.
Switch off before needle-area adjustments, including threading, needle changes, bobbin threading and foot changes.
Do not insert objects into openings, use outdoors or operate near aerosol sprays or administered oxygen.
Set controls to off before unplugging and grasp the plug rather than the cord.
Place nothing on the foot control.
Do not use a wet machine.
A damaged LED lamp or foot-control cord must be replaced by the manufacturer, service agent or a similarly qualified person.
Use identical parts for this double-insulated machine.
Observe regional supervision and foot-control requirements8 steps
In CENELEC countries, children aged eight and above and people with reduced capabilities or limited experience may use it with supervision or instruction in safe use and understanding of hazards.
Children must not play with it or clean/maintain without supervision.
Elsewhere, people including children with reduced capabilities or limited experience need supervision or instruction by someone responsible for safety; supervise children to prevent play.
Normal noise is less than 75 dB(A).
CENELEC controls: FC-2902D (220–240 V), Zhejiang Founder Motor Corporation, Vietnam; or Wakaho Electric, Vietnam 4C-326G (230 V), 4C-336G (240 V).
Double insulation supplies two insulation systems without grounding; do not add grounding.
Only qualified service personnel may service it, using identical replacement parts.
Machine basics
Instructions from the manual
Unpack the machineView
Put the box on a steady flat surface, lift out the machine and remove the outer packaging, other packing material and plastic bag.
Identify the machine parts23 steps
Front view: 1.
Thread tension dial; 2.
Thread take-up lever; 3.
Thread cutter; 4.
Presser foot; 5.
Needle plate; 6.
Removable extension table/ accessory storage; 7.
Pattern selector dial; 8.
Bobbin winding stopper; 9.
Reverse sewing lever.
Rear view: 1.
Thread guide; 2.
Bobbin winder spindle; 3.
Spool pin; 4.
Handwheel; 5.
Power and light switch; 6.
Main plug socket; 7.
Bobbin thread guide; 8.
Handle; 9.
Face plate; 10.
Presser foot lifter; 11.
Foot speed control; 12.
Power cord.
Connect power and control sewing speed8 steps
Connect to power as shown in the reviewed figure.
For a polarized plug, use the appropriate polarized outlet.
Unplug when not in use.
The foot control regulates sewing speed.
If unsure about connection, consult a qualified electrician.
Press the main switch to I for power and light.
A polarized plug has one wider blade and fits only one way: if it does not fit fully, reverse it; if it still does not fit, have a qualified electrician install the proper outlet.
Never modify the plug.
Raise the two-step presser foot lifter2 steps
For several layers or thick fabric, raise the foot to its higher position to place the work easily.
The machine is adjusted for normal room temperature; extreme heat and cold can affect stitching.
Identify standard and optional accessories2 steps
Standard accessories: all-purpose foot, zipper foot, buttonhole foot, button sewing foot, L-screwdriver, seam ripper/brush, two spool-pin felts, three needles, edge/quilting guide, four Singer Class 15 bobbins, darning plate and soft cover.
For additional optional feet, attachments or accessories, consult Singer.
Threading the machine
Instructions from the manual
Wind the bobbin9 steps
Put thread and spool-pin felt on the spool pin.
Draw thread through the upper guide and clockwise around the bobbin-winder tension discs.
Thread the bobbin as illustrated and put it on the spindle.
Move the spindle right, hold the thread end and press the foot control.
Release after a few turns, release the thread and cut close to the spool as the manual states.
Press again.
When full, the spool rotates slowly: release the pedal and cut the thread.
Move the spindle left and remove the bobbin.
While the spindle is in winding position, the machine cannot sew and the handwheel will not turn; move it left to sewing position to resume sewing.
Insert or remove the bobbin5 steps
Switch off before inserting or removing the bobbin and fully raise the needle.
Open the hinged cover, pull the bobbin-case tab and remove the case.
Hold it in one hand and insert the bobbin with thread running clockwise.
Pull thread through the slit and under the finger, leaving a six-inch tail.
Hold the case by its hinged latch and insert it into the shuttle.
Thread the upper thread8 steps
Switch off for needle threading.
Turn the handwheel toward you counterclockwise to raise the needle fully, with its mark directly up; raise the foot to release the tension discs.
Put thread and felt on the spool pin.
Draw thread through the upper guide and around the next guide as illustrated.
Lead down the right tension channel and up the left while holding thread between spool and guide.
At the top, pass right to left through the slotted take-up eye, then down again.
Pass behind the thin wire needle-clamp guide and thread the needle front to back.
Pull about six to eight inches beyond the eye to the rear and trim with the built-in cutter.
Complete upper-thread path and numbered detail panels. Switch off for needle threading; begin with the needle fully raised and foot up.
Diagram key
1: Raise needle fully with handwheel mark up and lift foot to release discs.
2: Put spool and felt on spool pin.
3: Draw thread through the upper guide.
4: Guide thread around the next thread guide as illustrated.
5: Lead down the right tension channel and up the left; hold thread between spool and guide.
6: Pass right to left through the take-up eye and down again.
7: Pass behind the thin wire needle-clamp guide, then thread the needle front to back.
8: Pull about six to eight inches to the rear and trim with the cutter.
a: Spool-pin felt.
Raise the bobbin thread4 steps
Hold the upper thread in the left hand.
Turn the handwheel toward you counterclockwise to lower then raise the needle.
If raising bobbin thread is difficult, check that the hinged cover or removable table is not trapping it.
Gently pull the upper thread to bring bobbin thread through the needle-plate hole; lay both threads back beneath the foot.
Adjust and assess thread tension8 steps
Basic upper tension is 4.
Turn up a number to increase or down to reduce.
Loose straight-stitch tension needs a higher number; tight tension needs a lower number.
Normal zigzag/decorative tension leaves a little upper thread on the underside.
Factory-set bobbin tension needs no adjustment.
No setting suits every stitch, thread and fabric.
Balanced top/bottom stitches usually suit straight construction sewing; the manual states 90 percent of sewing is between 3 and 5.
Zigzag/decorative tension generally needs less than straight stitching; a little upper thread beneath the fabric improves appearance and reduces puckering.
Sewing
Instructions from the manual
Choose a stitch patternView
Turn the pattern selector in either direction to choose a stitch. The manual marks straight stitch with straight-line symbols and zigzag stitch with zigzag symbols.
M2100 pattern selector and reverse lever; complete lettered control key. The lower decorative stitch strip is omitted because the manual does not name every pattern.
Diagram key
a: Pattern selector dial.
b: Reverse sewing lever.
Sew a straight stitchView
Select straight stitch. Put fabric under the foot with its edge at the desired needle-plate seam guide. Lower the foot lifter, then press the foot control to sew.
Secure a seam with reverse sewingView
Press the reverse lever and sew a few reverse stitches to secure the beginning and end of a seam. Release it to sew forward again.
Remove finished workView
Turn the handwheel toward you counterclockwise until the take-up lever is highest and the needle begins descending. Raise the foot and remove work behind the needle and foot.
Cut the threadView
Pull threads beneath and behind the foot. Guide them beside the face plate into cutter B, then pull down to cut.
Sew a blind hem6 steps
Choose the illustrated blind-hem stitch for stretch or firm fabric.
Always test first; this technique takes practice.
Turn up to the desired width and press, then fold back against the right side so the top hem edge extends about 7 mm (1/4 inch) to the right of the fold.
Sew slowly along the fold so the needle just catches one or two fabric threads.
Unfold and press.
An optional blind-hem foot from a Singer retailer can make this easier.
Sew a four-step buttonhole10 steps
Switch off to change feet.
Replace the all-purpose foot with the buttonhole foot.
Measure button diameter and thickness, add 0.3 cm (1/8 inch) for bartacks and mark the length.
Align the foot marking with the start mark, lower it and align the fabric centerline with the foot center.
Test on the same fabric because density varies.
Follow the illustrated four-step sequence with the selector: first sew the first side in the illustrated arrow direction, second sew the top bartack, third sew the other side in the illustrated arrow direction, fourth sew the bottom bartack.
Raise the needle before every selector change and avoid excessive stitches at steps 2 and 4.
Cut open from both ends toward the middle with the seam ripper.
Slightly reduce upper tension for better results; use stabilizer for fine/stretch fabrics.
Heavy thread or cord is advisable for stretch/knit fabric, with zigzag stitching over it as illustrated.
Complete four-step buttonhole settings, foot, sequence and corded variant. Raise the needle before changing selector steps. Directions are shown by the original arrows.
Diagram key
1: Sew the first side in the upward direction shown in the diagram.
2: Sew the top bartack; avoid too many stitches.
3: Sew the other side in the downward direction shown in the diagram.
4: Sew the bottom bartack; avoid too many stitches.
a: Marked buttonhole length: button diameter and thickness plus 0.3 cm (1/8 inch).
b: Align the marked fabric centerline with the foot center and the foot marking with the starting fabric mark.
A: Heavy thread or cord is advisable for stretch or knit fabric; zigzag over it as illustrated.
Sew on buttons9 steps
Switch off for foot changes.
Fit the darning plate and change to the button sewing foot.
Put work beneath the foot, place the button and lower the foot.
Select the second zigzag pattern shown; its width should match the holes.
Turn the handwheel toward you to verify the needle passes both holes without striking the button.
Slowly sew about ten stitches.
Bring tails behind the work and tie manually.
For a shank, put a darning needle on top and sew.
For four-hole buttons, sew the front pair first, push work forward and sew the rear pair.
Sew zippers and piping4 steps
Switch off for foot changes and fit the zipper foot, choosing its right or left attachment according to the sewing side.
Select the illustrated straight stitch.
To pass the tab, lower the needle into fabric, raise the foot and push the tab behind it; lower the foot and sew on.
A length of cord can also be sewn inside a bias strip to form a welt or piping.
Free-motion darn and stipple9 steps
The darning/embroidery foot is optional and not supplied.
Switch off before changing the foot/shank.
Install the darning plate, remove the shank and attach the optional foot to the bar with lever a behind needle-clamp screw b.
Press firmly from behind with the index finger and tighten screw c.
Sew around the hole edge to secure threads.
Work the first row left to right, turn the work 90 degrees and sew over the previous stitching.
A hoop is recommended.
The internal feed system is not used: the operator controls fabric movement and must coordinate it with sewing speed.
For stippling, select straight stitch; the optional foot helps guide meandering small curves to join fabric and batting layers.
General information
Instructions from the manual
Use the removable extension tableView
Hold the table horizontally and push in the illustrated direction. Pull left to remove. Its interior is an accessory box; flip its cover down to open it.
Change the foot and shank or fit the quilting guide5 steps
Switch off for all these operations.
Push foot e to disengage cut-out c.
To attach, fit pin d into holder cut-out c.
Raise bar a with the lifter to remove or attach shank b as illustrated.
Insert quilting guide f in the illustrated slot and adjust for hems, pleats or quilting.
Match needle, fabric and thread11 steps
Match needle to thread and fabric weight.
Use 9–11 (70–80) for thin cotton, voile, silk, muslin, interlock, cotton knit, tricot, jersey, crepe, woven polyester and shirt/blouse fabric, with light cotton, nylon, polyester or cotton-wrapped polyester thread.
Use 11–14 (80–90) for cotton, satin, kettlecloth, sailcloth, double knit and light wool.
Use 14 (90) for cotton duck, wool, heavier knit, terrycloth and denim.
Use 16 (100) for canvas, wool, tent/quilted fabric, denim and light-to-medium upholstery.
Medium thread suits these middle rows: polyester on synthetics and cotton on natural wovens; use the same thread above and below.
Use 18 (110) and heavy thread for heavy wool, overcoats, upholstery and some leather/vinyl.
Singer 2020 sharp needles, 9 (70) to 18 (110), suit natural woven wool/cotton/silk and are not recommended for double knit.
Singer 2032 leather needles, stated 12 (80) to 18 (110), suit leather, vinyl and upholstery and leave a smaller hole than a standard large needle.
Use genuine Singer needles; replace about every other garment or at first breakage/skipped stitches.
Fit and remove the darning plate3 steps
Use the illustrated darning plate for darning or free-hand embroidery.
Remove it for normal sewing.
An optional darning/embroidery foot from an authorized Singer retailer is recommended for free-motion work.
Maintenance and troubleshooting
Instructions from the manual
Inspect and replace the needle4 steps
Switch off before inserting or removing a needle.
Change it regularly, especially when worn and causing problems; use Singer needles for best results.
Loosen screw A, insert the new needle with shaft flat side B to the back and push fully up at C/D; tighten the screw.
Needles must be sound: bent needles, damaged points and blunt needles can cause problems.
Clean and lubricate the machine9 steps
Unplug before cleaning.
Turn the handwheel until the needle is fully up.
Open the hinged front cover and remove needle-plate screws with the screwdriver, then the plate.
Brush the entire feed-teeth area with the supplied brush.
Remove the bobbin case, snap hook retaining arms 3 out, remove race cover 4 and hook 5, and clean with a soft cloth.
Apply one or two drops of sewing-machine oil at point 6 in the reviewed figure.
Turn the handwheel until race 7 is left.
Refit hook 5 and race cover, snap both retaining arms back, insert case and bobbin, and refit the plate.
Remove lint and threads regularly and obtain regular service at a service center.
Needle-plate removal, feed-teeth brushing and complete hook assembly/oiling figure. Unplug first; apply only one or two drops of sewing-machine oil at point 6.
Diagram key
1: Fully raise needle, open the hinged front cover and remove needle-plate screws with screwdriver.
2: Brush the whole feed-teeth area with the supplied brush.
3: Snap both hook-retaining arms outward to remove the assembly; snap back after reassembly.
4: Hook-race cover: remove, then refit after replacing the hook.
5: Hook: remove and clean with soft cloth; turn race left before refitting.
6: Oiling point: apply one or two drops of sewing-machine oil.
7: Hook race: turn the handwheel until the race is in the left position before refitting the hook.
Controls and parts
See the manual diagrams 2 diagrams
M2100 front controls and parts; full numbered key.
Diagram key
1: Thread tension dial
2: Thread take-up lever
3: Thread cutter
4: Presser foot
5: Needle plate
6: Removable extension table/ accessory storage
7: Pattern selector dial
8: Bobbin winding stopper
9: Reverse sewing lever
M2100 rear parts, foot control and power cord; full numbered key.
