The Mazda 121, specifically the DA (DB) generation produced from 1990 to 1998, represents a practical and economical subcompact hatchback. Designed with efficiency and everyday usability in mind, this model aimed to provide reliable transportation for individuals and small families, often competing with vehicles like the Ford Fiesta and Volkswagen Polo. Its engineering emphasizes Mazda's commitment to delivering engaging driving dynamics, or "Zoom-Zoom," even within the constraints of its class. This generation, known in some markets as the Autozam Revue, was primarily manufactured in Japan and offered a straightforward yet capable package, typically featuring a 1.3-liter inline 4-cylinder engine coupled with either a 5-speed manual or an optional 4-speed automatic transmission. This comprehensive Workshop Service Manual for Repair provides essential guidance for maintaining and repairing the Mazda 121 (DB) generation. Covering a wide array of systems, including the engine, fuel, cooling, lubrication, ignition, exhaust, transmission, drivetrain, suspension, steering, brakes, and electrical systems, this manual is an invaluable resource. It details periodic maintenance schedules, fluid specifications, and common issues such as rust and engine idling problems, offering systematic troubleshooting procedures and step-by-step repair instructions. With 771 pages of detailed information, including technical specifications, torque values, special tool requirements, and clear diagrams, this English-language manual is designed to assist owners, mechanics, and technicians in ensuring the longevity and optimal performance of their vehicle. 🏷️ Basic Information Identification Make: Mazda Model: 121 Generation Generation Code: DA (DB) Codes Chassis Code: DB129 👋 Introduction Market Position Vehicle Segment: Subcompact hatchback. Competitive Analysis Key Competitors: Ford Fiesta, Volkswagen Polo, Honda Civic (early models), Toyota Starlet. Key Features Target Audience: Economical, reliable, and practical transportation for individuals and small families. Design Philosophy: Focus on efficiency, practicality, and Mazda's hallmark of 'Zoom-Zoom' driving dynamics adapted for the subcompact class. 📋 Manual Details Coverage Areas Applicable Years: 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998 Page Count Total Pages: 771 Manual Type Type: Workshop Service Manual for Repair Language Language: English Format File Format: PDF 📖 Manual Coverage Systems Covered Engine: Comprehensive coverage of engine mechanicals, including disassembly, assembly, inspection, and repair of major components. Fuel System: Details on fuel delivery, injection systems, fuel pump, injectors, and related components. Cooling System: Information on radiator, water pump, thermostat, hoses, and coolant specifications. Lubrication System: Oil pump, oil filter, oil pressure, and lubrication system maintenance. Ignition System: Spark plugs, ignition coils, distributor (if applicable), and timing adjustments. Exhaust System: Catalytic converter, muffler, exhaust manifold, and pipe repair and replacement. Transmission: Both manual and automatic transmission overhaul, maintenance, clutch service, and gear selection. Drivetrain: Front-wheel drive system, CV joints, axles, and differential service. Suspension: Front and rear suspension components, shock absorbers, springs, control arms, and alignment procedures. Steering: Power steering system, steering rack, tie rods, and steering column repair. Brakes: Disc and drum brake systems, brake pads, rotors, calipers, master cylinder, and bleeding procedures. Electrical System: Wiring diagrams, starter motor, alternator, battery, lighting, fuses, relays, and control modules. Body And Chassis: Body panel removal/installation, interior trim, glass replacement, door mechanisms, and structural repairs. Heating And Air Conditioning: HVAC system components, refrigerant handling, blower motor, and climate control adjustments. Body Electrical: Wipers, power windows, door locks, mirrors, and instrument cluster diagnostics. Procedures Included Maintenance: Detailed periodic maintenance schedules, fluid changes, filter replacements, and inspections. Troubleshooting: Systematic diagnostic procedures, fault code interpretation, and common problem solutions. Repair: Step-by-step instructions for removal, disassembly, inspection, repair, and reassembly of all major vehicle components. Installation: Guidance on the correct installation of new or replacement parts. Adjustments: Specific procedures for adjusting systems such as brakes, clutch, and ignition timing. Technical Depth Depth: Comprehensive, from basic maintenance and adjustments to complete engine and transmission rebuilds. Diagrams And Illustrations: Features detailed step-by-step procedures with pictorial diagrams, exploded views, and photographs for clarity. Special Tools: Identification and usage instructions for specific Mazda service tools required for certain procedures. Torque Specifications: Precise tightening torque values for all critical fasteners and components. Service Data: Includes essential service data, specifications, allowable limits, and reference values for accurate diagnostics and repairs. 📊 Manual Specifications File Format Quality: High-resolution PDF, printable, and searchable. Print Quality Pages Printable: Yes Binding Type Binding: Digital Download (PDF) Paper Type Paper Type: N/A (Digital) Software Requirements Reader: Adobe Reader Compatibility Operating Systems: Windows, Mac, and Linux OS ⚙️ Engine Specifications Primary Engine Engine Code: B3-ME (common for this era) Displacement: 1.3 Liters (1300 cc) Configuration: Inline 4-cylinder, SOHC (Single Overhead Cam) Performance Horsepower: Approximately 70-75 hp (varies by market and specific engine tune) Torque: Approximately 95-100 Nm (varies by market and specific engine tune) Fuel System Induction: Electronic Fuel Injection (EFI) Fuel Type: Unleaded Gasoline 🔧 Transmission Standard Transmission Type: 5-speed Manual Optional Transmission Type: 4-speed Automatic (optional) Features Drivetrain: Front-Wheel Drive (FWD) 📐 Dimensions Exterior Length: Approx. 3800-3900 mm (varies slightly by body style) Width: Approx. 1600-1650...