Target Audience:
Do-it-yourself enthusiasts, professional mechanics, and owners seeking to maintain or restore their Mazda RX-4.
Value Proposition:
Provides comprehensive factory-level repair information at a fraction of the cost of professional shop labor, empowering owners to maintain their classic vehicle.
Feature Highlight 1:
Step-by-step instructions with detailed exploded diagrams and photographs.
Feature Highlight 2:
Troubleshooting and electrical service procedures combined with clear wiring diagrams.
Feature Highlight 3:
Enables owners to perform all maintenance, diagnostics, and repairs themselves.
Manual Advantage:
Essential resource for maintaining and preserving a classic rotary-powered Mazda.
Engine:
Rotary Engine (12A) Mechanical, Cooling, Lubrication, Ignition, Fuel Delivery, Emission Controls.
Transmission:
Manual Transmission (4-speed & 5-speed), Automatic Transmission (optional).
Drivetrain:
Rear Wheel Drive, Driveshaft, Differential, Axles.
Suspension:
Front Independent Suspension (MacPherson Strut), Rear Leaf Spring Suspension, Shock Absorbers, Bushings.
Brakes:
Front Disc Brakes, Rear Drum Brakes, Parking Brake System, Hydraulic Lines, Master Cylinder.
Steering:
Recirculating Ball Steering System, Steering Column, Steering Linkage.
Electrical:
Battery, Charging System (Alternator), Starting System (Starter Motor), Ignition System, Lighting, Instrumentation, Fuses, Relays, Wiring Diagrams.
Body Interior Exterior:
Body Panels, Doors, Hood, Trunk, Seats, Dashboard, Trim, Glass, Seals.
HVAC:
Heating System, Ventilation (no air conditioning typically standard on base models).
Maintenance:
Routine maintenance, fluid changes, filter replacements, spark plug (if applicable for ignition system) inspection/replacement.
Troubleshooting:
Diagnostic procedures for common issues, symptom-based troubleshooting guides.
Repair:
Step-by-step instructions for component disassembly, repair, and reassembly.
Overhaul:
Detailed procedures for engine (rotary) rebuild, transmission overhaul, etc.
Specifications:
Torque specifications, clearances, fluid capacities, electrical resistance values.
Wiring Diagrams:
Comprehensive electrical wiring schematics for all vehicle systems.
Depth Of Coverage:
Complete factory-level repair and diagnostic information, suitable for professional mechanics and advanced DIYers.
Readability:
Easy-to-read text, high-quality diagrams and illustrations.
Searchability:
Likely searchable text within the PDF, allowing quick information retrieval.
Printable Pages:
All pages are printable, allowing for creation of physical copies for workshop use.
Digital Binding:
N/A (Digital Download)
Digital Paper Type:
N/A (Digital Download - printable on user's choice of paper)
Engine Type:
Two-Rotor Wankel Rotary Engine
Displacement:
1146 cc (approx. 573 cc per rotor)
Horsepower Net Est:
Approx. 90-110 hp (depending on year and emissions equipment)
Torque Net Est:
Approx. 100-115 lb-ft
Carburetion:
Single or Twin Hitachi Carburetors (e.g., Hitachi HJB 30-32)
Fuel Type:
Unleaded Gasoline (Octane rating specified in manual)
Apex Seals:
Critical component requiring specific lubrication and break-in procedures.
Oil Metering Pump:
System for injecting pre-mix oil into the fuel/air mixture.
Radiator Type:
Crossflow radiator.
Coolant Type:
Ethylene Glycol based antifreeze mixed with distilled water (specific ratio detailed).
Transmission Type Std:
4-Speed Manual Transmission
Transmission Type Opt:
5-Speed Manual Transmission (later models) and 3-Speed Automatic Transmission
Clutch Type:
Dry Single Plate Clutch
Manual Transmission Fluid:
GL-4 Gear Oil (Viscosity specification, e.g., 75W-90, detailed in manual)
Automatic Transmission Fluid:
Dexron-II or equivalent automatic transmission fluid.
Body Styles:
2-door Coupe, 4-door Sedan, 5-door Wagon
Wheelbase:
Approximately 2475 mm (97.4 inches)
Length:
Approximately 4200-4400 mm (165.4-173.2 inches) depending on body style
Curb Weight:
Approximately 1050-1150 kg (2315-2535 lbs) depending on configuration
Crash Test Data:
Limited official crash test data available for this era, emphasis on structural integrity and occupant restraint systems.
Active Safety Features:
Front Disc Brakes, Rear Drum Brakes, Collapsible Steering Column.
Passive Safety Features:
Lap and Shoulder Seatbelts, Padded Dashboard, Energy-Absorbing Steering Column.
Oil Change Interval:
Recommended every 5,000 km (3,000 miles) or 6 months, whichever comes first.
Transmission Fluid Change:
Recommended every 40,000 km (25,000 miles) or 2 years.
Coolant Change:
Recommended every 2 years or 40,000 km (25,000 miles).
Engine Oil Spec:
API SF or SG, SAE 10W-30 or 10W-40 (specific viscosity may vary by climate, refer to manual).
Coolant Capacity:
Approx. 6.0 Liters (6.3 US Quarts)
Brake Fluid Spec:
DOT 3 or DOT 4 Hydraulic Brake Fluid.
Common Rotary Issue 1:
Apex seal wear, leading to low compression and starting difficulties.
Common Rotary Issue 2:
Carburetor tuning and maintenance, as they can be sensitive.
Common Rotary Issue 3:
Chasing oil leaks, particularly from the front and rear eccentric shaft seals.
Chassis Related Issue:
Corrosion in common areas such as wheel wells, sills, and chassis components due to age.
Mazda Rotary Legacy:
Built on Mazda's pioneering development and success with rotary engine technology, following the Cosmo and RX-2/3.
Production Years:
1972-1978
Market Segment:
Compact sports sedan/coupe/wagon, competing with other Japanese and some American compacts.
Manufacturing Location:
Japan
Key Design Elements:
Sleek, sporty styling with clean lines, characteristic of its era.
