Before choosing a part
Compatibility essentials
Start with these documented details. Read the requirements with each answer before choosing a needle, bobbin or foot.
- Needle system / designation
- Needle sizes by fabric and use
Table4: light materials10(60)/synthetic thread Nm120; medium12–16(80–100)/Nm60; mid-heavy18–19(110–120)/Nm30.
Requirements and sources →- Maximum stitch / zigzag width
- Bobbin part / pack reference
Not yet confirmed here: Manufacturer accessory group, Presser-foot shank type, Foot attachment, Foot holder / mount, Foot interface / generation, Bobbin type / class, Bobbin material, Bobbin diameter, Bobbin height, Hook type, Feed system, Bobbin loading direction. What is still to confirm →
Model & names
- Model
- Singer 20U-309
Other names, regional versions and related models have not been confirmed here. A shared manual, product line or accessory group does not identify the machine's family.
What do you need help with?
What must I switch off or unplug before using, changing or maintaining the machine?
Before you use this answer
Read the exact model-column conditions and full illustrated source. Non-English editions establish document presence only. Standardized interfaces, substitutions and the unresolved original plate conflict remain separate; this navigation does not supply replacement fit.
Documents and page references →Which needle designation and supplied sizes does this exact model document?
Before you use this answer
Read the exact model-column conditions and full illustrated source. Non-English editions establish document presence only. Standardized interfaces, substitutions and the unresolved original plate conflict remain separate; this navigation does not supply replacement fit.
Documents and page references →How do I remove, thread, insert, wind and adjust the original bobbin case?
Before you use this answer
Read the exact model-column conditions and full illustrated source. Non-English editions establish document presence only. Standardized interfaces, substitutions and the unresolved original plate conflict remain separate; this navigation does not supply replacement fit.
Documents and page references →What does the manual say about threading and thread tension?
Before you use this answer
Read the exact model-column conditions and full illustrated source. Non-English editions establish document presence only. Standardized interfaces, substitutions and the unresolved original plate conflict remain separate; this navigation does not supply replacement fit.
Documents and page references →What foot pressure, lift, knee-lift setup and original accessories are documented?
Before you use this answer
Read the exact model-column conditions and full illustrated source. Non-English editions establish document presence only. Standardized interfaces, substitutions and the unresolved original plate conflict remain separate; this navigation does not supply replacement fit.
Documents and page references →What lubrication, cleaning, restart and safety checks does the manual specify?
Before you use this answer
Read the exact model-column conditions and full illustrated source. Non-English editions establish document presence only. Standardized interfaces, substitutions and the unresolved original plate conflict remain separate; this navigation does not supply replacement fit.
Documents and page references →More questions (8)
How does the manual specify needle insertion?
Before you use this answer
Read the exact model-column conditions and full illustrated source. Non-English editions establish document presence only. Standardized interfaces, substitutions and the unresolved original plate conflict remain separate; this navigation does not supply replacement fit.
Documents and page references →Which original bobbin, case, hook, foot and plate numbers are listed for this model?
Before you use this answer
Read the exact model-column conditions and full illustrated source. Non-English editions establish document presence only. Standardized interfaces, substitutions and the unresolved original plate conflict remain separate; this navigation does not supply replacement fit.
Documents and page references →How do stitch length, width, needle position and knee controls work within the stated limits?
Before you use this answer
Read the exact model-column conditions and full illustrated source. Non-English editions establish document presence only. Standardized interfaces, substitutions and the unresolved original plate conflict remain separate; this navigation does not supply replacement fit.
Documents and page references →Which checks does the manual list for thread breaks, skipped stitches, feeding and unusual noise?
Before you use this answer
Read the exact model-column conditions and full illustrated source. Non-English editions establish document presence only. Standardized interfaces, substitutions and the unresolved original plate conflict remain separate; this navigation does not supply replacement fit.
Documents and page references →What stitch type, application, maximum speed, width, length and needle-bar stroke are documented?
Before you use this answer
Read the exact model-column conditions and full illustrated source. Non-English editions establish document presence only. Standardized interfaces, substitutions and the unresolved original plate conflict remain separate; this navigation does not supply replacement fit.
Documents and page references →What motor setup reference is documented, without assuming my installed electrical configuration?
Before you use this answer
Read the exact model-column conditions and full illustrated source. Non-English editions establish document presence only. Standardized interfaces, substitutions and the unresolved original plate conflict remain separate; this navigation does not supply replacement fit.
Documents and page references →Which original knee-lifter inventory is documented?
Before you use this answer
Read the exact model-column conditions and full illustrated source. Non-English editions establish document presence only. Standardized interfaces, substitutions and the unresolved original plate conflict remain separate; this navigation does not supply replacement fit.
Documents and page references →Which OEM editions are retained, and which translations are documented only for presence?
Before you use this answer
Read the exact model-column conditions and full illustrated source. Non-English editions establish document presence only. Standardized interfaces, substitutions and the unresolved original plate conflict remain separate; this navigation does not supply replacement fit.
Documents and page references →Needle, bobbin & presser-foot details
Read the model-specific requirements with each answer before choosing parts.
Needle
Required catalog and system
- Exact 20U-309 column and retained EnglishSeptember2011 edition only; obey safety and model-specific procedure exceptions.; Literal OEM pairing for these exact model rows; not universal equivalence to other named needle systems or unrestricted substitute products.
The manual requires needle Cat.1910-05, system(135x9), only.
Sources and pages
Needle insertion
- Exact 20U-309 column and retained EnglishSeptember2011 edition only; obey safety and model-specific procedure exceptions.; Follow Figure10 and retain finger guard; no inferred scarf direction or twin-needle permission.
With power cut off, raise needle bar highest by turning handwheel toward you; fully seat needle with long groove toward the front, then tighten its screw.
Sources and pages
Fabric thread selection
- Exact 20U-309 column and retained EnglishSeptember2011 edition only; obey safety and model-specific procedure exceptions.; Needle and thread selection depends on actual fabric/thread. The mid-heavy needle-table column does not expand the Table1 light-to-medium machine application. Footnote allows equivalent sizes of other thread types, not needle-system substitution.
Table4: light materials10(60)/synthetic thread Nm120; medium12–16(80–100)/Nm60; mid-heavy18–19(110–120)/Nm30.
Sources and pages
Original supplied size occurrence
- Exact 20U-309 column and retained EnglishSeptember2011 edition only; obey safety and model-specific procedure exceptions.; Source-local supplied/listed occurrences, not a claim that every sewing job requires#14 or that a present machine includes them.
Originalparts list shows1910-05#14 quantity1; accessories show quantity3.
Sources and pages
Alternate systems special needles
Not yet verified- Not yet verified: Alternate systems/products, point/material variants, twin/special-needle and unrestricted clearance remain unverified beyond literal1910-05(135x9) and conditional table.
Bobbin
Case removal
- Exact 20U-309 column and retained EnglishSeptember2011 edition only; obey safety and model-specific procedure exceptions.; Close required covers before operation; do not infer loading-class or universal hook orientation.
With power off, open bed slide, raise latch and lift out the bobbin case as Figure11 shows.
Sources and pages
Case threading
- Exact 20U-309 column and retained EnglishSeptember2011 edition only; obey safety and model-specific procedure exceptions.; For straight stitching the source notes a better result if thread does not pass through guide3. Use the complete illustrated route; no universal rotation direction inferred.
Follow Figure14 rotation arrow; thread through notch and under spring, then through case thread guide; leave approximately4inches as Figures16–17 show.
Sources and pages
Case replacement
- Exact 20U-309 column and retained EnglishSeptember2011 edition only; obey safety and model-specific procedure exceptions.; Power off throughout replacement; do not run with bed slide open.
Hold case by latch, seat on holder spindle so position finger enters its notch, release latch and press firmly in place; close bed slide.
Sources and pages
Winding scope
- Exact 20U-309 column and retained EnglishSeptember2011 edition only; obey safety and model-specific procedure exceptions.; Power-isolate setup and adjustments; running winding is distinct. Amount/uneven-winding adjustments require complete figure and trained judgment; no80percent fill or unrelated direct-drive procedure transfer.
Source winding uses handwheel stop-motion screw, fully seated bobbin on spindle and Figure13 pre-tension/latch; do not guide or hold thread while winding.
Sources and pages
Tension adjustment
- Exact 20U-309 column and retained EnglishSeptember2011 edition only; obey safety and model-specific procedure exceptions.; Power-isolated adjustment for actual sewing conditions; needle-thread tension is a separate control.
Clockwise case tension screw rotation increases bobbin-thread tension; counterclockwise decreases it.
Sources and pages
Original bobbin part
- Exact 20U-309 column and retained EnglishSeptember2011 edition only; obey safety and model-specific procedure exceptions.; Literal exact-column original occurrence; no retail fit, substitution, material or hardware equivalence.
606513
Sources and pages
Original bobbin case part
- Exact 20U-309 column and retained EnglishSeptember2011 edition only; obey safety and model-specific procedure exceptions.; Literal exact-column original occurrence; no retail fit, substitution, material or hardware equivalence.
606512
Sources and pages
Original hook assembly part
- Exact 20U-309 column and retained EnglishSeptember2011 edition only; obey safety and model-specific procedure exceptions.; Literal exact-column original occurrence; no retail fit, substitution, material or hardware equivalence.
606683
Sources and pages
Class dimensions material substitution
Not yet verified- Not yet verified: Original606513/case606512 numbers do not establish class/system, dimensions/profile/material or interchangeable substitutes.
Pressure adjustment
- Exact 20U-309 column and retained EnglishSeptember2011 edition only; obey safety and model-specific procedure exceptions.; Power-isolated trained-personnel adjustment; no universal force setting or substitute-foot fit established.
Loosen regulator nut; clockwise toward+ increases foot pressure and counterclockwise toward– decreases it; retighten nut.
Sources and pages
Knee lift setup
- Exact 20U-309 column and retained EnglishSeptember2011 edition only; obey safety and model-specific procedure exceptions.; Power-isolated trained setup; two-handed head handling/crushing warning. Lift/linkage dimensions do not prove shank, mount, adapter or cross-model item fit.
Knee-lift setup in Figure35 uses approximately9mm raised-foot position and a64mm linkage reference.
Sources and pages
Manual and knee lift mm
- Exact 20U-309 column and retained EnglishSeptember2011 edition only; obey safety and model-specific procedure exceptions.; Source Table1/Figure35 only; not shank/interface or clearance for any alternate foot.
6.35mm manual /9.0mm knee lift.
Sources and pages
Original assembly part
- Exact 20U-309 column and retained EnglishSeptember2011 edition only; obey safety and model-specific procedure exceptions.; Literal exact-column original occurrence; no retail fit, substitution, material or hardware equivalence.
606650
Sources and pages
Original needle plate part
Sources disagree- Exact 20U-309 column and retained EnglishSeptember2011 edition only; obey safety and model-specific procedure exceptions.; Same source edition, exact309column/diagram label. Do not silently correct either part number, infer a102alias, or select a replacement plate from this unresolved field. Other model occurrences remain source-local; no universal fit.
For20U-309, partsTable6.3 lists606652quantity1; Figure29 instead prints605652(20U-102/102C/309). Actual replacement plate designation is unresolved.
Sources and pages
Source accessory inventory
- Exact 20U-309 column and retained EnglishSeptember2011 edition only; obey safety and model-specific procedure exceptions.; Source quantities only, not current possession or universal compatibility/incompatibility. Listed attachments do not establish standardized mount or substitute fit; guard281822zero for309/910 does not permit guard-free operation.
606691zipper/606692buttonhole/606693straight/606694hemmer feet and606695/606696plates/606697feed:quantity0each in this model column.
Sources and pages
Mount shank holder adapters item fit
Not yet verified- Not yet verified: Standardized mount/shank geometry, holder/adapter requirements and exact retail-item fit remain unverified; screw and original assembly numbers do not establish them.
Plate diagram name join
Not yet verified- Not yet verified: Figure29 literal20U-102/102C on605652plate is not accepted as109/109C alias or corrected model applicability. Exact source-local parts Table6.3 remains separately bound.
Specifications & documented facts
Specifications apply to the named model and document edition. Read any setup, fabric or safety requirements with the answer.
Performance & stitch capabilities
Machine and stitch type
- Exact 20U-309 column and retained EnglishSeptember2011 edition only; obey safety and model-specific procedure exceptions.; Source distinguishes plain zigzag/straight,3-step309 and editable built-in100patterns910; no transfer of special controls across models.
3-step zigzag
Sources and pages
Application
- Exact 20U-309 column and retained EnglishSeptember2011 edition only; obey safety and model-specific procedure exceptions.; OEM category only; needle-table mid-heavy column does not expand this model capability.
Light to medium materials.
Sources and pages
Maximum speed rpm
- Exact 20U-309 column and retained EnglishSeptember2011 edition only; obey safety and model-specific procedure exceptions.; Maximumspeed depends on fabric/thread/sewing condition and Table3 width limits.
2500
Sources and pages
Maximum stitch bight mm
- Exact 20U-309 column and retained EnglishSeptember2011 edition only; obey safety and model-specific procedure exceptions.; Machine specification, not replacement-item clearance or dimensions.
9
Sources and pages
Maximum stitch length mm
- Exact 20U-309 column and retained EnglishSeptember2011 edition only; obey safety and model-specific procedure exceptions.; Machine specification, not replacement-item clearance or dimensions.
3
Sources and pages
Needle bar stroke mm
- Exact 20U-309 column and retained EnglishSeptember2011 edition only; obey safety and model-specific procedure exceptions.; Machine specification, not replacement-item clearance or dimensions.
34.8
Sources and pages
Stitch width speed limits
- Exact 20U-309 column and retained EnglishSeptember2011 edition only; obey safety and model-specific procedure exceptions.; Exact Table3 column; fabric/thread/actual condition may require slower speeds. Not an unrestricted motor setting.
0–5mm:2,500rpm;5–9mm:2,000rpm.
Sources and pages
Care
Oil and hook lubrication
- Exact 20U-309 column and retained EnglishSeptember2011 edition only; obey safety and model-specific procedure exceptions.; Power off for lubrication/access, trained maintenance, complete illustrated points. No unstated lubricant grade, dosing interval or material substitution.
Table1 specifies Singer Oil. Regularly apply one or two drops at the illustrated rotating-hook oil hole; oil felts/oiling points and a small amount of gear grease follow Figures8–9.
Sources and pages
First or disuse run
- Exact 20U-309 column and retained EnglishSeptember2011 edition only; obey safety and model-specific procedure exceptions.; Separate power-isolated lubrication from running break-in; required guards and trained safe setup. Not a universal daily speed or service interval.
For first setup or extended disuse, oil and run at1,000–1,500spm for about10minutes as the source directs.
Sources and pages
Cleaning
- Exact 20U-309 column and retained EnglishSeptember2011 edition only; obey safety and model-specific procedure exceptions.; Power-isolate maintenance; no unsupported solvent compatibility.
Periodically clean machine head with a soft dry cloth; do not use lacquer thinner.
Sources and pages
Safety inspection
- Exact 20U-309 column and retained EnglishSeptember2011 edition only; obey safety and model-specific procedure exceptions.; Electrical faults require qualified personnel; actual installed motor/belt configuration must be checked, not inferred.
Periodically check safety devices, fixing/support screws, V-belt condition/tension where fitted, motor overheating and cord/plug damage.
Sources and pages
Documents
Retained manual edition
- Exact 20U-309 column and retained EnglishSeptember2011 edition only; obey safety and model-specific procedure exceptions.; Actual printedSept2011 differs from registrytitleOctober; retain both provenance and discrepancy. OnecombinedPDF, not two originals or a separate service manual.
English Instruction Manual and Parts List,P/N364338-001Rev1September2011,64physicalpages.
Sources and pages
Additional independent oem roles
Not yet verified- Not yet verified: Four combined instruction-and-parts OEM PDFs are retained; no separate service manual, accessory compatibility guide, schematic or brochure accepted. No exhaustive search or distribution permission claimed.
Additional turkish oem edition
- Exact model-table presence and literal edition only; fourcombinedPDFs total, not eight independent originals. No translatedtechnical, hardware, region, supersession or public distribution equivalence. Turkishprinted264338 andSpanishMarch2011/titleNovdiscrepancies preserved.
Additional retainedTurkish combinedinstruction-and-parts OEM original,Literal P/N264338-001 Rev1 2011-09,64pages.
Sources and pages
Additional portuguese oem edition
- Exact model-table presence and literal edition only; fourcombinedPDFs total, not eight independent originals. No translatedtechnical, hardware, region, supersession or public distribution equivalence. Turkishprinted264338 andSpanishMarch2011/titleNovdiscrepancies preserved.
Additional retainedPortuguese combinedinstruction-and-parts OEM original,P/N364338-003 Rev0 November2011,64pages.
Sources and pages
Additional spanish oem edition
- Exact model-table presence and literal edition only; fourcombinedPDFs total, not eight independent originals. No translatedtechnical, hardware, region, supersession or public distribution equivalence. Turkishprinted264338 andSpanishMarch2011/titleNovdiscrepancies preserved.
Additional retainedSpanish combinedinstruction-and-parts OEM original,P/N364338-001 Rev0 March2011,64pages.
Sources and pages
Motor
Manual setup reference
- Exact 20U-309 column and retained EnglishSeptember2011 edition only; obey safety and model-specific procedure exceptions.; Manual family setup reference only, not actual supplied/present electrical configuration, voltage or universal motor fit. Conditional servo warning remains conditional.
Section2.3 lists1/3HP(250W),4-pole low-speed clutch motor and M-type V-belt.
Sources and pages
Actual installed electrical configuration
Not yet verified- Not yet verified: Actual installed motor, voltage, electrical ratings and changes by region/revision remain unverified; manual setup reference does not identify the present machine motor.
Parts
Original knee lifter inventory
- Exact 20U-309 column and retained EnglishSeptember2011 edition only; obey safety and model-specific procedure exceptions.; Exact accessories-row occurrences only; no interchangeability or common assembly inference.
GR759/25-8quantity1.
Sources and pages
Safety
Power isolation
- Exact 20U-309 column and retained EnglishSeptember2011 edition only; obey safety and model-specific procedure exceptions.; Switch off before unplugging; conditional quiet-servomotor warning does not prove a supplied motor type.
Turn off or unplug before threading, replacing bobbin/needle/foot/plate/feed components, maintenance and when not operating.
Sources and pages
Trained operation and service
- Exact 20U-309 column and retained EnglishSeptember2011 edition only; obey safety and model-specific procedure exceptions.; Stop immediately for damaged electrical equipment. No motor wiring-box access or safety-device bypass.
Use trained operators, required safety devices, goggles, proper grounding, cable and connectors. Repairs, fitting and maintenance require trained personnel; electrical work requires qualified personnel.
Sources and pages
Guards and head handling
- Exact 20U-309 column and retained EnglishSeptember2011 edition only; obey safety and model-specific procedure exceptions.; Power isolate and use both hands for head handling; crushing risk between head and table. Accessory-list zero quantities do not remove these safety requirements.
Do not run without belt cover, finger guard or thread take-up guard; take care when lowering or lifting the sewing head.
Sources and pages
Troubleshooting
Needle thread breaks
- Exact 20U-309 column and retained EnglishSeptember2011 edition only; obey safety and model-specific procedure exceptions.; Possible causes, not diagnosis. Power-isolate corrections and use complete manual; unresolved problems go to service center.
Check threading, lint around guides/tension, tension, needle bend/point/insertion/size and thread quality.
Sources and pages
Bobbin thread breaks
- Exact 20U-309 column and retained EnglishSeptember2011 edition only; obey safety and model-specific procedure exceptions.; Possible checks only; power off for handling/correction; no substitute bobbin recommendation.
Check bobbin threading, tangles, tension and correct winding/smooth rotation.
Sources and pages
Skipping and needle breaks
- Exact 20U-309 column and retained EnglishSeptember2011 edition only; obey safety and model-specific procedure exceptions.; Possible causes, not guaranteed repair. Do not pull fabric; stop/isolate for corrections, service unresolved faults.
Check needle insertion/condition and needle-thread-fabric match; loose needle screw or pulling fabric while sewing can contribute to breakage.
Sources and pages
Feeding and puckering
- Exact 20U-309 column and retained EnglishSeptember2011 edition only; obey safety and model-specific procedure exceptions.; Do not transfer manual stitch-length controls to20E-910, explicitly excluded in section3.13. Power-isolated corrections; no machine application expansion.
For feeding problems check applicable stitch-length and foot-pressure controls; for puckering check threading, needle point and tension.
Sources and pages
Noise and escalation
- Exact 20U-309 column and retained EnglishSeptember2011 edition only; obey safety and model-specific procedure exceptions.; Power-isolate cleaning; no diagnosis or unrestricted electrical/timing repair instructions.
Heavy rotating noise may relate to lint at feed dog or hook; if sewing difficulty remains after appropriate adjustments contact service center.
Sources and pages
Use
Threading
- Exact 20U-309 column and retained EnglishSeptember2011 edition only; obey safety and model-specific procedure exceptions.; Power off; finger and thread take-up guards must be present. Read complete illustrated routing.
Raise needle bar to its highest point, follow Figure19 threading order and leave approximately4cm at needle.
Sources and pages
Needle thread tension
- Exact 20U-309 column and retained EnglishSeptember2011 edition only; obey safety and model-specific procedure exceptions.; Actual sewing conditions determine tension; power-isolated adjustment, distinct from bobbin tension.
Clockwise needle-thread tension nut increases tension; counterclockwise decreases it.
Sources and pages
Manual stitch length and reverse
- Exact 20U-309 column and retained EnglishSeptember2011 edition only; obey safety and model-specific procedure exceptions.; Section3.13 explicitly excludes20E-910; adjust safely/power-isolated and use completeFigure20, no910manual-control transfer.
Align stitch-length dial millimeters to its marker; reverse lever down gives reverse feed and release gives forward feed, with separate reverse-length thumbscrew.
Sources and pages
Manual width regulator
- Exact 20U-309 column and retained EnglishSeptember2011 edition only; obey safety and model-specific procedure exceptions.; Sections3.19–3.20 exclude20E-910; poweroff, needle out of fabric; this does not establish alternate plate/foot clearance.
Spring-biased width regulator and two thumbscrews control wide/narrow limits fromzero to model maximum.
Sources and pages
Excluded manual position and knee width
Not yet verified- Not yet verified: Sections3.18/3.25 explicitly exclude309/910 from manual position/knee-width controls; their alternative methods are not inferred. Generic drawings or accessoryzero quantities do not resolve them.
Part numbers & accessories
These are manufacturer part references. A drawing or matching number alone does not confirm that a replacement from a seller fits. Check the model-specific listing and restrictions.
Replacement compatibility has not been checked. The original source listings below retain their exact scope.
Original parts listed in the cited source
These are source-local original references. They do not establish a replacement, supersession, adapter or retail product fit.
Original bobbin part
- Exact 20U-309 column and retained EnglishSeptember2011 edition only; obey safety and model-specific procedure exceptions.; Literal exact-column original occurrence; no retail fit, substitution, material or hardware equivalence.
606513
Full answer and all conditions →
Zigzag Sewing Machine - Instruction Manual and Parts List · P/N364338-001 Rev1 September2011 · PDF page 7 · printed page 4 · Zigzag Sewing Machine - Instruction Manual and Parts List · P/N364338-001 Rev1 September2011 · PDF page 48 · printed page 45
Original bobbin case part
- Exact 20U-309 column and retained EnglishSeptember2011 edition only; obey safety and model-specific procedure exceptions.; Literal exact-column original occurrence; no retail fit, substitution, material or hardware equivalence.
606512
Full answer and all conditions →
Zigzag Sewing Machine - Instruction Manual and Parts List · P/N364338-001 Rev1 September2011 · PDF page 7 · printed page 4 · Zigzag Sewing Machine - Instruction Manual and Parts List · P/N364338-001 Rev1 September2011 · PDF page 48 · printed page 45
Original hook assembly part
- Exact 20U-309 column and retained EnglishSeptember2011 edition only; obey safety and model-specific procedure exceptions.; Literal exact-column original occurrence; no retail fit, substitution, material or hardware equivalence.
606683
Full answer and all conditions →
Zigzag Sewing Machine - Instruction Manual and Parts List · P/N364338-001 Rev1 September2011 · PDF page 7 · printed page 4 · Zigzag Sewing Machine - Instruction Manual and Parts List · P/N364338-001 Rev1 September2011 · PDF page 48 · printed page 45
Original assembly part
- Exact 20U-309 column and retained EnglishSeptember2011 edition only; obey safety and model-specific procedure exceptions.; Literal exact-column original occurrence; no retail fit, substitution, material or hardware equivalence.
606650
Full answer and all conditions →
Zigzag Sewing Machine - Instruction Manual and Parts List · P/N364338-001 Rev1 September2011 · PDF page 7 · printed page 4 · Zigzag Sewing Machine - Instruction Manual and Parts List · P/N364338-001 Rev1 September2011 · PDF page 40 · printed page 37
Conflicting original part references
Unresolved: do not choose a replacement from these conflicting references. They remain separate from supported original listings and accepted replacement applications.
Original needle plate part
- Exact 20U-309 column and retained EnglishSeptember2011 edition only; obey safety and model-specific procedure exceptions.; Same source edition, exact309column/diagram label. Do not silently correct either part number, infer a102alias, or select a replacement plate from this unresolved field. Other model occurrences remain source-local; no universal fit.
For20U-309, partsTable6.3 lists606652quantity1; Figure29 instead prints605652(20U-102/102C/309). Actual replacement plate designation is unresolved.
Conflict, full answer and all conditions →
Zigzag Sewing Machine - Instruction Manual and Parts List · P/N364338-001 Rev1 September2011 · PDF page 7 · printed page 4 · Zigzag Sewing Machine - Instruction Manual and Parts List · P/N364338-001 Rev1 September2011 · PDF page 40 · printed page 37 · Zigzag Sewing Machine - Instruction Manual and Parts List · P/N364338-001 Rev1 September2011 · PDF page 25 · printed page 22
Check the exact model and part before ordering. Missing information does not mean a part is incompatible.
Care, setup & service references
Use the full source procedure and its safety precautions. A short referenced answer is not a substitute for service documentation or qualified electrical/mechanical repair.
Service-manual availability and service-only procedures remain unestablished unless separately cataloged and reviewed.
Coverage and source-review limits
Operating limits and original part numbers apply to the exact model column. Additional language editions are listed as documents, not used as translated technical evidence. Unanswered interfaces and replacement compatibility remain open.
Coverage and remaining questions
- Operating manual
- Listed below; check the edition and available link.
- Exact OEM part application
- No model-specific part application is listed here.
Still to confirm
An unanswered question does not mean a part is incompatible. We have not confirmed enough information to recommend it.
Needle — Alternate systems special needles: Not established Full recorded limit & conditions →
Bobbin — Class dimensions material substitution: Not established Full recorded limit & conditions →
Use — Excluded manual position and knee width: Not established Full recorded limit & conditions →
Source conflict · Presser foot — Original needle plate part: For20U-309, partsTable6.3 lists606652quantity1; Figure29 instead prints605652(20U-102/102C/309). Actual replacement plate designation is unresolved. Full source conflict & conditions →
Presser foot — Mount shank holder adapters item fit: Not established Full recorded limit & conditions →
Presser foot — Plate diagram name join: Not established Full recorded limit & conditions →
Motor — Actual installed electrical configuration: Not established Full recorded limit & conditions →
Documents — Additional independent oem roles: Not established Full recorded limit & conditions →
Recorded source conflicts remain visible with their cited editions and original conditions. Other names, regional versions, production history and additional specifications or documents are not fully covered here. Their absence is not a “none exist” finding.
Next evidence targets
- Establish standardized shank/mount and adapter compatibility independently of lift height or original assembly numbers.
- Establish original bobbin class, geometry/material and replacement limits with exact applicable evidence.
- Resolve conflicting original plate references where present; do not choose a substitute from the conflict.
- Research other applicable OEM roles; translated editions establish presence rather than independent technical claims.
These are research questions, not claims that the missing relationship exists.
Sources and page references
Each answer links to its exact evidence passage below. Open a reference to see the document and page. These links identify the source; they do not include the full manual or its diagrams. Document access is consolidated in the OEM library above.
Document and page references (33)
20U/20E combined instruction-and-parts original - Turkish
Published by Singer · Literal P/N264338-001 Rev1 2011-09 · Turkish
Additional exact-model document presence and literal edition only; no translated technical, region, hardware or supersession equivalence.
Document and available links →About this document →PDF page 7 · printed page 4
About this document link
Applicability and edition
Checked as a transcription of the page image.
PDF page 64 · printed page back cover
About this document link
Applicability and edition
Checked against the document text.
Editorial responsibility & corrections
Alex Shick · Founder and editor. Corrections managed by Alex Shick.
This Singer 20U-309 guide is based on documents, with AI assistance to organize the information. We have not tested or repaired the machine.
Check the document edition with each answer. A source review date is not a machine inspection date or a promise that the manual is the latest edition.
Contact the SewIndex team or report a correction ↗
The correction address has been tested and its monitoring confirmed. We cannot promise a response or accept every suggested change.
Report an error with the model, document and page · About SewIndex and our method
About this information
Answers come from the documents named on this page. They describe those editions, and may not cover later changes to the machine or manual.
What the original source review covered
Source review: Reuses retained exact-model source acceptance. The independent review sampled 48 of 288 positive claims across six profiles; it did not independently verify every claim. English supports technical answers; other editions establish document presence and literal edition only, with their original evidence methods. Translated technical use and matching current public downloads have not been established.