The Mazda 121, specifically the second generation (DB) produced from 1990 to 1998, represents Mazda's commitment to offering practical, economical, and reliable transportation. Available globally in various body styles including sedan, hatchback, and wagon, this front-wheel-drive vehicle often shared platform elements with Ford models, reflecting a collaborative approach to automotive engineering. Powered by engines such as the 1.3L B3, known for its efficiency, the Mazda 121 was designed for everyday use, prioritizing driver-friendliness and straightforward operation, embodying Mazda's heritage of building accessible and dependable vehicles. This comprehensive Service Repair Workshop Manual provides detailed information for the maintenance and repair of your Mazda 121. Covering a vast array of systems, including engine mechanicals and electrical components, fuel and emission controls, clutch and transaxle systems, suspension, steering, brakes, and bodywork, this manual offers step-by-step instructions for diagnostics, troubleshooting, and repair. It is an indispensable resource for DIY owners and professional technicians alike, aiming to facilitate the upkeep of the vehicle and ensure its continued performance and reliability through accurate, vehicle-specific guidance and clear visual aids. 🏷️ Basic Information Identification Make: Mazda Model: 121 Generation: DB (Second Generation) Production Years Covered: 1990-1998 Codes Chassis Codes: DB1 (early DB), DB3 (late DB) 👋 Introduction Market Position Target Audience: DIY car owners with basic mechanical skills and professional independent auto technicians Competitive Analysis Value Proposition: Provides dealer-level repair information at a fraction of the cost of professional labor, enabling significant savings on maintenance and repairs Key Features Accuracy: Vehicle-specific information, not generic, ensuring accurate repair procedures Completeness: Complete and intact manual with no missing or corrupt parts Usability: Clear and concise text with step-by-step instructions and visual aids for easy understanding 📋 Manual Details Coverage Areas Markets Covered: Global (various regional specifications may apply) Vehicle Variants Covered: Sedan, Hatchback, Wagon (depending on regional availability) Page Count Estimated Page Count: Varies by specific edition, typically 500+ pages Manual Type Type: Service Repair Workshop Manual Language Language: English Format Digital Format: PDF Download 📖 Manual Coverage Systems Covered Engine Mechanical: Complete overhaul, disassembly, assembly, cylinder head, block, crankshaft, pistons, connecting rods, timing belt/chain, oil pump, cooling system, lubrication system Engine Electrical: Ignition system, starter motor, alternator, battery, engine control unit (ECU) diagnostics, sensors, wiring diagrams Emission Control: Catalytic converter, EGR system, evaporative emission control (EVAP), oxygen sensors, emission control components testing and diagnosis Fuel System: Fuel pump, fuel injectors, fuel filter, fuel pressure regulator, throttle body, fuel tank, fuel lines, carburetion (if applicable) Clutch System: Clutch disc, pressure plate, release bearing, clutch master cylinder, clutch slave cylinder, hydraulic lines, adjustment and bleeding Manual Transaxle: Gearbox overhaul, gear replacement, synchronizers, shift mechanism, clutch operation, fluid specifications and replacement Automatic Transaxle: Transmission overhaul, valve body, torque converter, planetary gears, clutch packs, solenoids, diagnostic procedures, fluid specifications and replacement Driveshaft Axles: CV joints, drive shafts, wheel bearings, axle boots, inspection and replacement Suspension System: Front suspension (struts, control arms, ball joints, bushings), rear suspension (shocks, springs, trailing arms), wheel alignment, shock absorber replacement Steering System: Steering rack, power steering pump, steering column, tie rod ends, steering wheel, fluid specifications and bleeding Restraint System: Seat belts, airbags (diagnosis and replacement precautions), safety systems Brake System: Front and rear brakes (discs/drums), calipers, wheel cylinders, brake pads, brake shoes, brake lines, master cylinder, ABS (if equipped), bleeding procedures Body Interior Exterior: Door panels, seats, dashboard, trim, exterior panels, bumpers, glass, seals, body repair, rust prevention Body Electrical: Lighting system, power windows, central locking, wipers, horn, dashboard instrumentation, switches, wiring harnesses, fuse box diagrams HVAC: Heating system, ventilation, air conditioning (compressor, refrigerant, evaporator, condenser), blower motor, controls, diagnosis and recharge procedures Procedures Included Maintenance: Oil change, filter replacement, spark plug replacement, air filter replacement, coolant flush, brake fluid flush, transmission fluid change, tune-ups, belt inspection/replacement Troubleshooting: Diagnostic charts for common problems, symptom-based troubleshooting guides, electrical system diagnostics, engine performance issues Repair: Step-by-step instructions for component removal, installation, overhaul, and adjustment Diagnostics: Fault code retrieval (OBD-I if applicable), sensor testing, component testing procedures Technical Depth Depth: Comprehensive (from basic maintenance to complete engine and transmission rebuilds) Illustrations: Includes diagrams, illustrations, and photographs Schematics: Detailed wiring schematics and system diagrams 📊 Manual Specifications File Format Compatibility: Compatible with all versions of Windows and Mac Viewing Requirements: Adobe PDF Reader Print Quality Printability: All pages are printable Binding Type Binding: N/A (Digital PDF) Paper Type Paper Type: N/A (Digital PDF) ⚙️ Engine Specifications Primary Engine Engine Codes: B3, E3, (and potentially others depending on market, e.g., JDM BP variants in some markets for similar platforms) Performance Displacement Liter B3: 1.3L Horsepower B3: Approx. 63-72 hp (depending on emission standards and tuning) Torque B3: Approx. 100-110 Nm (depending on tuning) Fuel System Fuel Delivery Early Models: Carburetor Fuel Delivery Late Models: Multi-point Fuel Injection (MPI) 🔧 Transmission Standard Transmission Type: 5-speed Manual Transaxle Optional Transmission Type: 3-speed or...