The Mazda RX-3SP, produced between 1977 and 1978, represents a sporty iteration of the RX-3, distinguishing itself with a unique rotary engine and performance-oriented features. This model competed in the enthusiast market with its distinctive styling, smooth rotary power delivery from the 12A engine, and agile handling. As a key part of Mazda's pioneering work with Wankel rotary technology, the RX-3SP appealed to drivers seeking an engaging and unconventional driving experience, setting itself apart from more conventional piston-engined competitors of its era. This factory service manual provides comprehensive guidance for the maintenance and repair of the Mazda RX-3SP, covering all essential vehicle systems. Within its pages, you will find detailed procedures for engine (including the rotary 12A), drivetrain, suspension, steering, brakes, and electrical systems. The manual includes routine maintenance schedules, in-depth troubleshooting guides, systematic diagnostic steps, and precise repair instructions with torque specifications, making it an indispensable resource for owners, technicians, and mechanics dedicated to preserving the performance and longevity of this classic rotary-powered automobile. 🏷️ Basic Information Identification Make: Mazda Model: RX-3SP Production Years: 1977-1978 Codes Chassis Codes: S124A (Coupe), S108A (Sedan - though SP was typically coupe/GT) 👋 Introduction Market Position Market Position: The Mazda RX-3SP was a sporty variant of the RX-3, aimed at enthusiasts seeking performance and distinctive styling, particularly appealing to those interested in rotary engine technology. Competitive Analysis Competitive Analysis: Competed with other sporty compacts and pony cars of the era, such as the Datsun 240Z/260Z, Toyota Celica GT, Ford Mustang, and Chevrolet Camaro, differentiating itself with its unique Wankel rotary engine. Key Features Key Features: Distinctive styling (often a coupe or hatchback), powerful and smooth rotary engine, sporty suspension tuning, SP badging denoting performance enhancements. 📋 Manual Details Coverage Areas Systems Covered Overview: Comprehensive service and repair for all major vehicle systems, including engine, drivetrain, chassis, electrical, and body. Page Count Page Count: Estimated 500-700 pages (typical for a complete factory service manual of this era) Manual Type Manual Type: Factory Service Manual / Workshop Manual Language Language: English Format Format: Likely Printed (original) or Digital (PDF - common for reproduction) 📖 Manual Coverage Systems Covered Engine Systems: Rotary engine (12A), lubrication, cooling, fuel delivery (carburetion), ignition, emissions control, engine disassembly/assembly, troubleshooting. Transmission Systems: Manual transmission (likely 4 or 5-speed), clutch operation, removal/installation, internal component service, troubleshooting. Drivetrain Systems: Rear axle, driveshaft, U-joints, wheel bearings, differential service. Suspension Steering: Front and rear suspension components, shock absorbers, springs, bushings, steering gear, power steering system (if equipped), wheel alignment specifications. Brake Systems: Front disc brakes, rear drum brakes, hydraulic system, parking brake, brake fluid specifications, bleeding procedures, component replacement. Electrical Systems: Battery, charging system (alternator), starting system, lighting, ignition system, instrument cluster, wiring diagrams, fuse/relay identification, diagnostic procedures. Body Chassis: Body panels, doors, windows, interior trim, seats, bumpers, chassis lubrication, frame specifications. Emissions Control: Air pump system, EGR valve, catalytic converter (if applicable), emission control component testing and adjustment. Fuel System Details: Detailed information on the Hitachi/Nikki carburetor, fuel pump, fuel lines, and related components, including adjustments and overhaul. Cooling System Details: Covers radiator, water pump, thermostat, hoses, and fan operation. Rotary engines have specific cooling requirements due to their design. Lubrication System Details: Explains oil pump, oil pan, oil filter, and the crucial oil injection system or pre-mix requirements for apex seal lubrication. Electrical System Details: Comprehensive wiring diagrams, component identification, testing procedures for alternator, starter, ignition coil, etc. Procedures Included Maintenance Procedures: Routine maintenance tasks such as oil changes, filter replacements, spark plug replacement, ignition timing adjustment, carburetor adjustment, fluid checks and changes. Troubleshooting Procedures: Systematic diagnostic steps for common problems, including no-start conditions, engine performance issues, electrical faults, and braking problems. Repair Procedures: Detailed step-by-step instructions for component removal, overhaul, and reinstallation for all major vehicle systems. Diagnostic Procedures: Methods for identifying faults, including visual inspections, measurement of electrical components, and performance testing. Torque Specifications: Provides precise torque values for all critical fasteners, essential for engine, transmission, and chassis work. Engine Rebuild Procedures: Detailed instructions for disassembling, inspecting, and reassembling the 12A rotary engine, including apex seal installation and housing lapping (if applicable). Technical Depth Technical Depth: Comprehensive, covering everything from basic adjustments to complete engine and transmission rebuilds, including torque specifications and clearances. Diagnostic Charts: Includes detailed diagnostic charts and flowcharts for troubleshooting electrical and mechanical issues. 📊 Manual Specifications File Format File Format: If digital, typically PDF with searchable text and clear imagery. Print Quality Print Quality: Originals would have factory print quality; digital reproductions should aim for high resolution for diagrams and text legibility. Binding Type Binding Type: Originals were often perfect bound or spiral bound for lay-flat usability. Digital copies are not applicable. Paper Type Paper Type: Originals used durable paper stock suitable for workshop environments. Digital copies are not applicable. Completeness Completeness: This is a comprehensive service...