Watchmaking - Service Manuals
Service manuals for Omega, Rolex, Seiko, Citizen, ETA, Zenith, Jaeger-LeCoultre — watch movements, parts lists and technical guides. PDF.
Our Watchmaking category is one of the largest collections of horological technical documentation available online. It covers Swiss and international movements: Omega, Rolex, ETA, Zenith, Jaeger-LeCoultre, Longines, Certina, Eterna, Citizen, Seiko, Bulova, Elgin, Tissot, Waltham. Documents include movement technical guides, spare parts lists, exploded diagrams, calibre specifications and service manuals. Essential references for professional watchmakers and enthusiasts.
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27 manualsAll Watchmaking Manuals (50)

0850/0855 Movement Technical Diagram
Complete technical diagram for Citizen 0850 and 0855 quartz movements presented across two pages. Page 1 displays the full movement assembly with all components clearly numbered: electronic circuit board, battery block, train wheel bridge, time wheels, coil units, rotor and stator assemblies, switching mechanisms, and lubrication points marked for A-Lube, V-Lube, F-Lube, and CH-1 oils. Page 2 features detailed exploded views of additional components including solar cell supporter, solar cell, shield plate, dial washer, hour wheel, 24-hour wheel, and intermediate wheels. The numbered layout and exploded views provide essential reference for identifying component positions and relationships during repair, maintenance, or assembly operations.

18ct 3N Yellow Gold Bracelet - Parts List
Parts list for the OMEGA 18ct 3N yellow gold bracelet, reference 020BB1574898. This technical documentation identifies all component parts required for this luxury bracelet, including gold links, protective covers, clasp locks, adjustment sliders, fastening screws, spring bars, and end pieces, each with its corresponding part reference number. Essential reference material for watchmakers, jewelers, and authorized service technicians.

6810, 6820, 6840 Movement Diagram
Technical movement diagram for Citizen caliber 6810, 6820, and 6840 mechanical watches, presenting a detailed exploded view of the internal mechanism. The diagram illustrates the arrangement and relationships between key components including disk assemblies, date dials and their protective guards, dial spacers, intermediate wheels, and the train wheel bridge. Also shown are the center wheel, mode wheel, switch actuating spring, mode jumper, rocking bar, switch spring, and switching stem. This service documentation provides essential reference material for watchmakers and technicians performing disassembly, maintenance, or repair work on these movements.

7D48 Technical Instruction - Assembly and Lubrication Manual
Comprehensive technical instruction manual for the Seiko 7D48 movement, providing professional-grade guidance on complete assembly procedures. Covers switching unit assembly, wheel train assembly, and circuit assembly with detailed illustrations throughout. Includes precise specifications for all lubrication points, with designated oil formulations (A0-3, A0-3II-1, A0-3II-2, A0-3II-3, A0-2II-1) and step-by-step pivot lubrication instructions to ensure optimal movement performance. Features critical identification notes for distinguishing 7J-series components from 5J2-series alternatives, helping technicians avoid costly mistakes during assembly. Emphasizes proper handling techniques to prevent component deformation during the rebuild process. Essential reference for watchmakers and movement technicians performing overhauls or service work on this quartz movement.

A. Schild Automatic Watch Movement Cal. 1903-1913 Technical Data and Parts List
Technical specification sheet for the A. Schild S.A. Grenchen automatic watch movement, covering calibers 1903 and 1913 (Ø 25.60 mm). Details include the self-winding mechanism with direct-sweep seconds at center, instantaneous date display, and operating frequency of 21,600 vibrations per hour. Comprehensive technical data section provides precise dimensional specifications for critical components: cage (25.60 mm), escapement assembly, annual balance wheel (10.30 mm), virole, pallet fork, hairspring, barrel, mainspring, brake spring, and date train. Page 2 features an illustrated parts catalog with numbered component diagrams and multilingual identification in French, English, and German for the base caliber 1902 platform. An essential technical reference for watchmakers servicing these Swiss movements.

A. Schild Cal. 1336/1361 Automatic Watch Movement Specifications
Technical specifications and parts diagram for A. Schild caliber 1336 and 1361 automatic watch movements with direct sweep second hand. This technical data sheet provides dimensional measurements in millimeters for all major assemblies—case, escapement, balance wheel, virole, hairspring, bridge, hands and seconds hand. The complete exploded parts view with numbered component references enables exact identification of each element. Multilingual parts list in French, English and German serves international workshop reference. Essential technical documentation for watchmakers identifying or servicing these reliable mid-century Swiss automatic movements.

A. Schild Cal. 1691, 1693 Technical Specifications
Technical specifications and repair documentation for A. Schild S.A. lever movements, calibers 1691 and 1693, manufactured in Grenchen, Switzerland. This workshop manual provides detailed mechanical diagrams, dimensional data in millimeters, and complete parts lists with part numbers and material identifications for both calibers. The 1691 measures 10 1/2''' (23.30 mm) and the 1693 measures 11 1/2''' (25.60 mm). Includes exploded component views of the base caliber 1690 platform alongside parts specific to each derivative caliber, enabling technicians and watchmakers to source replacements and understand assembly relationships. Essential reference for service and maintenance of these Swiss lever-escapement movements.

A. Schild Cal. 1782 and 1783 Watch Movement Specifications
Technical specifications manual for A. Schild caliber 1782 and 1783 automatic watch movements. This repair and service document provides detailed dimensional data covering the cage, escapement, balance wheel, virole, piston, spiral, barrel, hairspring, regulator, hands, winding stem, balance cock, and oscillating weight — everything a watchmaker needs to service, maintain, or restore these movements. Includes exploded views and a comprehensive parts list with manufacturer reference numbers. Cal. 1782 features a lever escapement with automatic winding and direct center sweep second hand, operating at 21,600 alternances per hour. Cal. 1783 adds an instantaneous date display accessible through the dial opening, with quick date-setting functionality. Essential workshop reference for A. Schild movement maintenance and repair work.

A. Schild Cal. 1880 Movement Technical Data Sheet
Technical data sheet for the A. Schild caliber 1880 watch movement, a lever escapement model manufactured in Grenchen, Switzerland. Rated at 21,600 vibrations per hour with a direct-sweep central seconds hand and beveled movement edges. This comprehensive technical specification document provides detailed dimensions and characteristics covering the balance, escape wheel, balance cock, hairspring, mainspring barrel, pinions, jewels, pallets, and all supporting structural components. Includes a complete numbered parts list with exploded-view diagrams showing the layout and assembly sequence of every movement element.

A. Schild Cal. 1882 Watch Movement Technical Data Sheet
Technical specifications document for the A. Schild caliber 1882 automatic watch movement (11.5 lignes, 25.60 mm, 21,600 vibrations per hour) manufactured by A. Schild S.A. in Grenchen, Switzerland. Comprehensive dimensional data for all components including cage, escapement, balance wheel, hairspring assembly, virole, and piston. Includes complete parts list with numbered diagrams and multilingual nomenclature (English, French, German). Direct sweep seconds mechanism. Essential reference document for watchmakers and technicians.

A. Schild Caliber 1746 Lever Movement - Technical Data
Technical data sheet for the A. Schild caliber 1746 lever escapement movement, direct center-sweep second hand with bevelled edges. Includes dual mechanism views (dial side and movement side), comprehensive technical characteristics table with precise measurements for all major assemblies, complete parts list with over 50 numbered components and sub-assemblies, and detailed assembly diagram. Essential reference documentation for watchmakers servicing this Swiss lever movement.

A. Schild Caliber 1881 Technical Specifications
Technical specifications and parts catalog for the A. Schild caliber 1881 watch movement—an essential reference for technicians and watchmakers servicing this Swiss-made mechanism. The document provides comprehensive dimensional data for all major components including the cage, escape wheel, balance, mainspring, and supporting parts, enabling precise assembly and adjustment during maintenance. A complete parts list with numbered components is illustrated in detailed technical drawings. Movement diagrams are presented from both sides for guidance during service work, with oscillation frequency specified at 21,600 alternances per hour. A dedicated section covers the specialized parts and assembly configuration of the fourth wheel date-setting mechanism, making this an indispensable workshop reference for caliber 1881 maintenance.

A. Schild Caliber 1900 - Technical Data
Technical data and specifications for the A. Schild caliber 1900 watch movement. This service manual presents detailed mechanical drawings of all movement components alongside a complete numbered parts list—essential reference material for watch repair technicians and movement specialists. Precise dimensions in millimeters cover the full 21,600 alternances oscillation rate typical of mid-twentieth century precision movements. The caliber features a direct sweep second hand with beveled edges and measures 25.60 mm in diameter. Indispensable for workshop reference, restoration work, and understanding the construction of this classic Swiss movement architecture.

A. Schild Calibre 1780/1781 Technical Data and Parts List
Complete technical specifications and parts documentation for A. Schild caliber 1780 and 1781 watch movements, covering production years 1780–1781. The caliber 1780 features a lever escapement movement with direct-sweep centre seconds at 21,600 vibrations per hour. Caliber 1781 adds an instantaneous date display visible through a dial window, with rapid date-correction capability. This technical data sheet provides full specifications in millimetres for all critical components including the balance cock, escapement, balance wheel, virole, hairspring, barrel, hands, sweep seconds needle, regulator, balance staff, mainspring, and dial elements. Detailed exploded views and comprehensive parts lists with numbered component references are included for both the base caliber 1780 and the specific date-mechanism parts unique to caliber 1781. Essential reference material for watchmakers and technicians working with these movements.

A. Schild S.A. Grenchen Watch Calibers 1871, 1873, 1876 - Technical Data and Parts List
Technical specifications and parts documentation for A. Schild S.A. watch calibers 1871, 1873, and 1876 manufactured in Grenchen, Switzerland. This technical data sheet provides detailed mechanical drawings of the complete movements, featuring a direct central sweep second hand, self-winding automatic mechanism with integrated date complication, and a 21,600 vibrations per hour beat rate. Exploded component diagrams and assemblies specific to each caliber enable precise identification and sourcing of individual parts. Comprehensive numbered parts lists presented in French, English, and German, with all dimensional measurements provided in millimeters. Essential reference for watchmakers, technicians, and collectors servicing these Swiss-made automatic movements.

A100 Automatic Watch Movement Exploded Diagram
Exploded diagram and parts list for the Citizen A100 automatic watch movement. This two-page technical illustration provides a detailed breakdown of movement components with all parts clearly numbered for identification. Covers the mainspring barrel, gear train assembly, escapement mechanism, balance wheel and hairspring, case back, and dial elements. Reference caliber designations A100-1 and A100-2. Essential technical documentation for watchmakers and technicians requiring component identification and assembly references.

A100-2 Exploded Parts Diagram and Assembly View
Citizen A100-2 exploded parts diagram providing a detailed component breakdown and assembly sequence guide. Features numbered reference parts (226, 310, 308, 929, 108, 713, 109, 116, 078, 075, 103, 293) rendered in isometric and plan views to clarify the arrangement of internal mechanical components. This single-page technical drawing serves as an essential reference for assembly, disassembly, and parts identification during repair or maintenance work on the A100-2 movement.

A160 Movement Diagram and Parts Breakdown
Citizen A160 Movement Parts List and Technical Diagram. Complete technical parts breakdown for the Citizen A160 movement, including full exploded view with all numbered component references (234, 295, 233, 930, 720, 279, 701, 023, 017, 076, 072, 077, 212, 067, 064, 065, 069, 903, 226) on page 1 with caliber designation A160-1. Page 2 provides detailed views of critical subassemblies, including dial configuration (226, 310, 078) and internal movement components (293, 929, 109, 713, 109, 075, 103, 116) with caliber reference A160-2. Reference icons clarify proper assembly orientation and component positioning. Essential technical reference for watch technicians and repair professionals.

A160-2 Exploded Parts Diagram and Assembly
Technical parts diagram for the Citizen A160-2 watch movement, showing exploded view with component identification. This diagram uses reference numbers (226, 310, 078, 929, 293, 108, 713, 109, 103, 116, 075) to identify each part precisely. Multiple viewing angles illustrate the complete assembly structure and component layout. Essential technical reference for understanding the A160-2 movement design and parts relationships.

A670G Caliber Exploded View Assembly Diagram
Detailed exploded view and assembly diagram for the Citizen caliber A670G movement, essential reference material for watch technicians and service professionals. The diagram presents the complete disassembly sequence with all components clearly numbered and arranged in logical technical order for reassembly. It illustrates the main plate, bridges, jewels, screws, springs, and mechanical elements that comprise this quartz movement, serving as both a visual parts list and assembly guide for workshop repair, maintenance, and parts identification.

A670G-2/3 Exploded Parts Diagram and Assembly
Exploded parts diagram for the Citizen A670G-2/3 model, detailing the complete component assembly sequence with numbered part references (929, 293, 108, 253, 109, 087-179, 087-178, 713, 078, 103, 075, 100). The diagram features detailed cross-sectional views that illustrate mechanical assemblies and precise parts positioning throughout the watch movement. Essential for technicians performing maintenance, repair, or service work on this model, as well as for understanding the construction and relationships between individual components during reassembly and troubleshooting.

A800-00A-2 Exploded Parts Diagram and Assembly Reference
Citizen A800-00A-2 exploded parts diagram and assembly reference guide providing a detailed technical breakdown of all internal mechanisms, subassemblies, and individual components. This service diagram features numbered component callouts with corresponding part numbers and identification codes essential for repair, maintenance, and parts replacement work. The exploded view format allows technicians and service professionals to quickly locate specific components within the assembly and understand how each part fits into the complete mechanism. Use this parts list reference alongside your service manual for efficient troubleshooting and component sourcing.

A930-1/2 Caliber Movement Exploded Parts Diagram
Exploded parts diagram for the Citizen caliber A930-1/2 movement, providing a detailed visual breakdown of all internal components essential for watchmaking repair and maintenance. The diagram identifies each part by reference code, making it straightforward to source replacements or verify assembly during service work. Multiple technical views show movement plates, jewels, springs, and mechanical assemblies from different angles, with both Japanese and English labels for clarity. An indispensable reference for watch technicians and repair specialists working with this caliber.

ADEC Quartz HC0 Solar-Powered Watch Instruction Manual
Instruction manual for the ADEC Quartz Model HC0 (Caliber 5A80) solar-powered analog watch. This owner's manual covers all essential features and operation, including solar charging procedures, time setting, and the watch's built-in warning functions—insufficient recharge alert and time setting reminder—plus quick start capability and overcharge protection. Features a comprehensive charging time table that shows how long the watch requires under different lighting conditions (direct sunlight, indoor fluorescent, and shade), practical handling precautions to protect the solar cell, and detailed maintenance guidelines. Whether you're setting up the watch for the first time or troubleshooting a warning indicator, this guide walks you through every procedure step-by-step.

ADEC Quartz HT2 Instruction Manual
Instruction manual for the CITIZEN ADEC Quartz Model HT2 (CAL. DC9A) digital watch. This owner's manual covers all operating procedures and technical specifications for this quartz timepiece. Detailed sections walk you through setting the time and calendar, configuring dual alarms, using the stopwatch and timer functions, activating the dual time zone feature, and controlling the chime. The manual also explains the EL internal illumination system for low-light readability, and includes complete functional specifications and display layout for all modes.

ADEC Quartz HT5 (Model DC98, Caliber ADC-9804) Instruction Manual
Complete instruction manual for the CITIZEN ADEC Quartz HT5 digital wristwatch (caliber DC98/ADC-9804). Covers all operational features: time display in 12/24-hour formats with AM/PM indicator, date/calendar functions, two independent alarms, 24-hour stopwatch with 1/100-second resolution, and countdown timer (up to 99 minutes). Includes detailed setting procedures for time, calendar, alarms, stopwatch, timer, and dual time zone display. Features EL (electroluminescent) internal illumination for low-light reading. Battery life: approximately 3 years (CR2016x1 cell). Contains functional diagrams, button operation sequences, and complete adjustment instructions for all complications.

ADEC Quartz HT7 Digital Watch Instruction Manual
Instruction manual for the CITIZEN ADEC Quartz HT7 digital watch (caliber DD70). This owner's manual provides complete specifications, detailed explanations of the display layout and button functions, and step-by-step operating procedures for setting time and date, configuring dual alarms, using stopwatch and split-time measurement modes, activating EL illumination, and performing an all-reset. Covers selectable 12 and 24-hour clock formats, calendar display, graphic display features, and battery specifications. Uses CR1616 battery type with approximately 3-year service life.

AE0912-52P Technical Data Sheet
Technical specifications document for the Citizen AE0912-52P men's dress watch (Elegance Collection, Paladion line). Features caliber 4620 movement, yellow base metal case with recessed bezels, mineral glass crystal, and champagne dial with glossy sunburst finish. Dial displays Roman numerals. Yellow base metal band with solid links and fold-over clasp. Water resistant construction. Overall watch length: 8.25 inches. Catalog reference: Spring 1997.

AI3380-58A Men's Stainless Steel Date Chronograph Watch Technical Data
Citizen AI3380-58A men's stainless steel chronograph watch technical specifications from Spring 1998 collection. This specifications sheet details the technical profile of a dress chronograph featuring: stainless steel case with fixed bezel and mineral crystal, stainless steel bracelet with tube and pin connection and double-fold hidden clasp, white dial with subsidiary chronograph subdials and applied hour markers. Caliber 6870 movement. Essential reference for horologists, watch retailers, and enthusiasts seeking detailed technical data on this classic Citizen dress chronograph.

AI3720-51E Stainless Steel Alarm Chronograph Watch Specifications
Technical specifications sheet for the Citizen AI3720-51E, a men's stainless steel water-resistant alarm chronograph watch. Documents complete case construction details including stainless steel housing and sapphire crystal; stainless steel bracelet with solid links, double fold clasp, spring bar attachment, and cotter pin sizing adjustments; dial configuration featuring black finish, applied indices, and modern luminous material for low-light readability; and Caliber 6870 movement specifications. Lists overall wrist length at 8.5 inches. Essential reference for owners requiring technical specifications, service data, and maintenance information.

AK0052-07E Men's Elegance Watch Technical Specifications
Technical specifications for the Citizen AK0052-07E men's watch. Caliber 2200, 2-hand movement. Yellow base metal plated case with mineral glass crystal bezel. Black leather strap with buckle clasp and spring bar attachment. No water resistance. Case number S14986 SMW. From Spring 1997 catalog, page 45.

All Reset Feature - Technical Service Bulletin
Technical service bulletin from Citizen Watch Company of America detailing the All-Reset feature for multi-function, complicated, and Eco Drive series timepieces. This single-page advisory explains when to perform a full reset—after battery replacement, extended low-charge conditions, physical shock, or static electricity exposure—and describes how the reset restores normal operation. Includes essential follow-up procedures such as 0-position calibration and time/date setting to ensure proper function after reset. Dated May 1, 2002. A practical reference for service technicians and authorized repair centers working with Citizen's advanced watch models.

Allig Slim Shiny Brown 19x16 with Buckle - Parts List
Parts list for the Omega Allig Slim Shiny Brown 19x16 watch strap with buckle (reference 020ST1153138). This parts guide identifies all key components required for assembly, maintenance, and replacement, including screws (2x, ref. 124ST3074), spring-bars (2x, ref. 068ST5002), steel clasp (ref. 117ST1153138), and steel links (ref. 114ST1153). Essential reference for watch repair technicians and owners performing strap service or restoration work.

AP5210-50A Men's Stainless Steel Solar Chronograph Watch Specifications
Technical Data sheet for the Citizen AP5210-50A Eco-Drive solar-powered chronograph watch. Complete specifications detailing the stainless steel case construction with 200-meter water resistance, mineral crystal, elapsed time bezel, soft white dial with luminous bar markers, and solid stainless steel bracelet fitted with a tri-fold clasp. Houses a caliber 0850 movement and measures 8.75 inches overall length. Original Fall 1997 catalog documentation.

Arogno Caliber Parts List - Technical Data
Parts list and technical cross-reference for Arogno watchmaking calibers (base calibers 22, 151, and 7320) and their derived variants, essential for watchmakers and repair technicians working with Incabloc movements. Includes caliber dimensions, jewel specifications, balance wheel and hairspring data, plus associated bloc and movement reference numbers for accurate component sourcing and identification during service and repair work.

AS 2060-2066 Watch Movement Technical Data and Parts List
Complete technical specifications and parts nomenclature for A-SCHILD watch movements 2060, 2061, 2062, 2063, 2064, and 2066 (Ø 25.60 mm). Documents movement variants with heights from 4.00 to 5.95 mm, including direct-drive and automatic date/day mechanisms at 3 Hz frequency. Provides technical characteristics, dimensional data, parts reference numbers, and caliber compatibility information for accurate component identification during watchmaking work.

AS 5100, 5101, 5102, 5103, 5104, 5150, 5151, 5152, 5153, 5154, 5156 Lever Movement Technical Data
Technical Data sheet for A. Schild AS lever escapement movements (Ø 19.40 mm). Covers eight caliber variants (5100/5101/5104, 5150/5151/5154, 5102/5103/5106, 5152/5153/5156) available in 3 Hz and 4 Hz frequencies. Includes complete technical specifications, dimensional data (height 4.00-5.95 mm), escape wheel details, and comprehensive parts catalog with exploded views and assembly diagrams. Features instantaneous date and day display options with quick-set mechanism. Contains caliber groupings, needle adjustment specifications, and detailed parts nomenclature for watchmakers and technicians.

AS Schild 5200-5206 Watch Movements Technical Data and Parts List
Complete technical data sheet for AS Schild calibers 5200, 5201, 5202, 5203, 5204, and 5206 watch movements manufactured by Fabrique d'Ebauches A. Schild SA in Grenchen, Switzerland. Features direct-sweep second hand mechanism with optional automatic self-winding, operating at 3 Hz (21600 vibrations per hour). Movement height: 4.70 mm (models 5200-5201-5204) and 6.50 mm (models 5202-5203-5206); diameter: Ø 27.00 mm. Includes detailed technical specifications, dimensional diagrams, jeweling adjustments, and complete parts catalogs with original component numbers. Comprehensive mechanical drawings illustrate movement assembly, balance wheel configurations, and full component breakdowns. Essential technical documentation for identifying and sourcing spare parts for these Swiss-made movements.

AS Schild Incabloc Technical Data and Parts Reference
Technical data and parts reference for AS Schild SA watch movements manufactured in Grenchen. Consolidates caliber reference numbers, derived caliber variants, bloc specifications, pressure ratings, and pivot dimensions in tabular format. An essential workshop manual for technicians servicing and maintaining Incabloc-equipped movements and precision timekeeping instruments.

Aurore Watch Caliber Parts List and Specifications
Complete technical parts reference and specifications for Incabloc Aurore watch calibers (122, 423, 427, 4820, 4830) manufactured by Fabriques d'Ebauches Bernoises SA. This parts list documents the full range of movement variants with detailed reference tables covering base caliber designations, physical dimensions, derived caliber configurations, and corresponding technical specifications for each component. An essential service manual resource for watchmakers, repair technicians, and horological restorers working with Aurore movements.

Automatic Movement Exploded Parts Diagram - Caliber 6210-00A-2
Complete exploded parts diagram for Citizen automatic movement caliber 6210-00A-2, detailing all internal components with numbered part references. Covers the full assembly including balance wheel, escapement mechanism, gear train, rotor, mainspring, and clutch components. Essential technical reference for watchmakers and technicians performing movement maintenance, repair, or complete restoration requiring precise understanding of component placement and assembly sequence.

Automatic Section Watch Movement Parts Catalog
Automatic watch movement parts catalog from Marshall covering factory-original components for Forster and General series automatic mechanisms. Supplies complete part numbering, component positioning, and exploded assembly views for Forster movements (80, 81, 90, 91, 194, 197, 800) and General movements (836, 837, 838, 839, 842, 844, 845, 846), including calendar-equipped variants. Features detailed mechanical drawings and illustrated part identification throughout, making this an essential reference for watch technicians performing service, repair, or restoration work on these automatic calibers.

Automatic Transmission Clutch Assembly - Exploded View
Technical exploded view diagram of an automatic transmission clutch assembly, displaying the clutch drum (903), planetary gear sets (087, 025), and associated mechanical components with precise identification numbers. Reference number 4640-1. Includes component reference numbers for parts identification and technical documentation purposes.

B080 Movement Technical Diagram
Technical exploded view diagram of the Citizen B080 quartz movement, detailing component layout and part identification for the Cal.B080-1/2 caliber. This service documentation provides a precise visual breakdown of the movement assembly, essential for technicians working on watch repair and maintenance. The diagram includes specific appearance parts references (399-A651, 399-A643, 399-A642) and assembly specifications needed for accurate movement service and component sourcing. Ideal for watchmakers and repair professionals requiring detailed movement structure reference.

B510 Exploded Parts Diagram and Component Layout
Citizen B510 exploded parts diagram providing a complete technical breakdown of the watch movement and case assembly. This single-page technical reference maps every component with a detailed part numbering system, making it essential for watchmakers, technicians, and service professionals performing repairs, maintenance, or parts sourcing. The vertical section view cross-references individual components, subassemblies, and mechanical parts in their proper assembly configuration, giving you the precision layout needed for accurate identification and reassembly.

B740/B741 Movement Diagram - Technical Data
Technical parts identification diagram for Citizen B740 and B741 quartz movements. This document presents comprehensive exploded views of the complete movement, detailing every component and subassembly from the circuit board and electronic components through to the finished mechanism. Covers secondary battery installation, train wheel bridges, intermediate wheels, depth adjustment wheels, clutch mechanisms, and setting stems with precise positioning references. Includes both cross-sectional and plan views of critical subassemblies, making it essential reference material for technicians and watchmakers performing movement service, repair, or complete restoration of these quartz-regulated timepieces.

B800-2 Exploded Parts Diagram
Exploded parts diagram for the Citizen B800-2 watch movement, providing a detailed technical breakdown of the complete assembly structure. Numbered component references identify all major parts—appearance components (310, 308, 108), internal mechanisms (713, 075, 116), screws and fasteners (103, 109, 929-51), decorative ring (293), and top/bottom cover assemblies (178). The diagram features bilingual labeling in Japanese and English, making it essential for parts identification, service procedures, and workshop manual applications. Ideal for technicians performing maintenance, repair, or complete disassembly of this Citizen model.

B8001 Exploded View Assembly Diagram
Exploded view assembly diagram for the Citizen B8001, showing the complete disassembly sequence and component positioning throughout the unit. Details include the top cover assembly (parts 295, 720), middle section components (279, 701, 246), internal mechanism elements (023, 084, 903-187, 285, 190), and bottom assembly (750, 903-197, 226). Individual components are clearly referenced by part numbers (017, 076, 072, 071, 077, 067, 069, 064, 087, 065, 028) for precise identification during repair or maintenance. Cross-sectional views illustrate spatial relationships and orientation of each assembly section. Essential technical reference for technicians performing disassembly, repair, or parts replacement on the B8001.

B810-2 Exploded Parts Diagram and Assembly
Exploded parts diagram for the Citizen B810-2 watch movement, presenting the complete disassembled assembly sequence in a single technical illustration. The diagram identifies all major caliber components including parts numbered 226-412, 310, 078, 929-510, 293, 116, 713, 075, 108, and 103, with cross-sectional and axial views to clarify positioning and orientation during reassembly. Essential reference for watchmakers and technicians performing movement service, repair, or maintenance on this model.

B910-1 Exploded View Assembly Diagram
Citizen B910-1 Parts List exploded view assembly diagram. Technical drawing with numbered part callouts identifying each component—housing assemblies, internal mechanisms, fasteners, and subassemblies—showing their exact positions and relationships. Multiple cross-section views and detailed annotations guide component location and proper assembly sequence. Essential reference for technicians identifying parts and understanding assembly structure.