Product Name:
Mazda RX2 RX3 1970-1978 Workshop Service Repair Manual PDF Download
Chassis Codes:
S102A (RX2), S124A (RX3 Sedan), S132A (RX3 Coupe)
Generation Identifier:
First Generation (RX2), First Generation (RX3)
Positioning:
Essential resource for owners and mechanics seeking to maintain, repair, or restore the iconic Mazda RX2 and RX3 rotary models. Targets classic car enthusiasts and rotary engine specialists.
Comparison:
Offers a depth of technical detail often surpassing aftermarket manuals, providing factory-level insights crucial for the unique rotary engine architecture. A vital supplement to limited original documentation for these models.
Unique Selling Points:
Detailed rotary engine specific procedures, comprehensive wiring diagrams, troubleshooting flowcharts, and factory specifications for a broad range of model years.
Applicable Years:
1970, 1971, 1972, 1973, 1974, 1975, 1976, 1977, 1978
Models Covered:
Mazda RX2 (Capella Rotary), Mazda RX3 (Savanna Rotary)
Estimated Page Count:
800+
Manual Type:
Workshop Service Repair Manual
Searchability:
Likely text-searchable PDF, allowing for quick location of specific topics.
Powertrain:
Rotary Engine (12A), Transmission (4-speed Manual, 3-speed Automatic), Clutch, Differential, Driveshafts
Chassis:
Suspension (Front & Rear), Steering System, Brakes (Front Disc, Rear Drum), Wheels, Tires
Electrical:
Ignition System, Charging System, Starting System, Lighting, Gauges, Wiper System, Horn, Fuse Box Diagrams
Body And Interior:
Body Panels, Doors, Windows, Seats, Interior Trim, HVAC System (if applicable), Fuel System, Exhaust System
Fuel System:
Fuel tank, fuel lines, fuel pump, carburetor(s), emission control systems (where applicable).
Cooling System:
Radiator, water pump, thermostat, coolant hoses, fan, heater core.
Maintenance:
Lubrication, Fluid Changes (Oil, Coolant, Brake Fluid), Filter Replacements, Spark Plug (Apex Seal) Inspection, Battery Maintenance
Repair:
Engine Overhaul (Apex Seal Replacement, Rotor Housing Inspection), Transmission Rebuild, Brake System Overhaul, Suspension Component Replacement, Electrical Component Diagnosis and Repair
Troubleshooting:
Diagnostic Charts, Symptom-Based Troubleshooting Guides, Common Problems and Solutions
Emissions Controls:
Procedures for inspection, adjustment, and servicing of any factory-fitted emissions control equipment.
Depth:
Comprehensive: Covers basic adjustments to full engine and transmission rebuilds, including detailed torque specifications, clearances, and diagnostic procedures.
Wiring Diagrams:
Detailed electrical schematics for all systems, aiding in diagnosis and repair.
Torque Specifications:
Extensive listing of torque values for critical fasteners across all mechanical systems.
Engine Type:
Mazda Rotary (Wankel)
Engine Displacement:
1146cc (12A)
Horsepower Rx2 Early:
~110-120 hp (SAE Gross)
Horsepower Rx3 Early:
~110-120 hp (SAE Gross)
Torque Rx2 Early:
~118-125 lb-ft (SAE Gross)
Torque Rx3 Early:
~118-125 lb-ft (SAE Gross)
Fuel Delivery:
Downdraft Carburetor (e.g., Hitachi, Mikuni) or Dual Side-Draft Carburetors depending on model and year.
Fuel Type:
Unleaded Gasoline (Octane rating may vary, consult original spec sheet)
Apex Seal Replacement Interval:
Variable, condition-dependent; manual provides inspection and replacement procedures.
Oil Type Recommendation:
Mazda recommended specific rotary engine oil or high-quality mineral/synthetic oil meeting specified API service classifications (e.g., SF or SG equivalent). Consult manual for exact specs.
Engine Mounts:
Inspection and replacement procedures for engine mounts to mitigate vibration.
Standard Transmission:
4-Speed Manual
Optional Transmission:
3-Speed Automatic (Torqueflite derivative, specific designation varies)
Clutch Type:
Single Dry Plate
Manual Transmission Fluid Spec:
GL-4 Hypoid Gear Oil (e.g., SAE 75W-90 or SAE 80W-90)
Automatic Transmission Fluid Spec:
Dexron II or equivalent automatic transmission fluid
Crash Test Data:
No modern crash test data available for this era; manual focuses on mechanical safety systems.
Braking System:
Front: Disc Brakes; Rear: Drum Brakes. Dual-circuit hydraulic system.
Parking Brake:
Mechanical lever acting on rear wheels.
Seat Belts:
Standard lap belts, optional shoulder belts may be present depending on model year and region.
Body Construction:
Unitized body construction with structural integrity considerations for its time.
Engine Oil Change:
Every 3,000 miles or 3 months (typical for the era, manual provides specifics).
Ignition Points Condenser:
Periodic inspection and adjustment/replacement recommended (manual details procedure).
Carburetor Cleaning:
As needed based on performance, manual details adjustment procedures.
Engine Coolant:
Ethylene Glycol based antifreeze/coolant (e.g., 50/50 mix with distilled water). Capacity approx. 5.5 liters.
Brake Fluid:
DOT 3 or DOT 4 brake fluid (consult manual for specific DOT requirement).
Rotary Engine Apex Seals:
Wear of apex seals is a common concern with rotary engines of this generation, leading to loss of compression and performance. Manual provides detailed inspection and replacement procedures.
Carburetor Issues:
Perishable fuel system components, carburetor tuning can be sensitive. Manual covers adjustments and potential rebuilds.
Cooling System:
Potential for overheating if cooling system maintenance is neglected, due to the nature of rotary heat dissipation. Manual details coolant flow and system checks.
Rust Corrosion:
Common for vehicles of this age; manual may include body repair sections and rust prevention advice.
Mazda Rotary Introduction:
Mazda pioneered the Wankel rotary engine in mass production, beginning with the Cosmo Sport in 1967. The RX2 and RX3 were key models in establishing Mazda's reputation for rotary performance.
Rx2 Development:
Launched in 1970 as the Capella Rotary (Mazda RX2 in export markets). Based on the Mazda Capella platform, it was Mazda's first rotary-powered family car.
Rx3 Development:
Launched in 1971 as the Savanna Rotary (Mazda RX3 in export markets). Positioned below the RX2, it offered a sportier compact coupe and sedan body style, becoming a significant success.
Body Styles:
RX2: Primarily Coupe; RX3: Coupe and Sedan
Production Period:
RX2: 1970-1974; RX3: 1971-1978
Manufacturing Locations:
Japan (Mazda Factories)
