🏷️ Basic Information Identification Make: Mini Model: 1275 GT Model Code: ADO21 Production Years: 1969-1980 Generation Generation Designation: First Generation (ADO21) 👋 Introduction Market Position Target Audience: Mini 1275 GT owners and enthusiasts, DIY mechanics, restoration specialists Competitive Analysis Value Proposition: Provides professional-level repair and maintenance information, enabling significant cost savings on labor. Key Features Authenticity: Genuine factory documentation, ensuring accuracy and completeness. Accessibility: Instant digital download, eliminating shipping delays and costs. Usability: Printable, searchable PDF format for easy information retrieval and on-demand use. 📋 Manual Details Coverage Areas Primary Coverage: Mini 1275 GT (1969-1980) Secondary Coverage: General Mini Cooper S (Mk3/Mk4, 1275cc) Page Count Estimated Page Count: Hundreds of pages (Exact number not specified, but described as 'complete' and 'hundreds') Manual Type Manual Type: Factory Service Repair Manual Authenticity: Official Factory Manuals (Not 3rd party) Language Language: English Format Delivery Method: Digital Download File Format: PDF 📖 Manual Coverage Systems Covered Engine Service Repair: Yes Transmission Service Repair: Yes Brake System: Yes Wiring Diagram: Yes Electrical System: Yes Suspension: Yes Steering: Yes Cooling System: Yes Fuel System: Yes (includes Fuel Injection / Fuel System) Emission System: Yes Chassis Bodywork: Yes Interior Trim: Yes Drive Axle Differential: Yes Heater Air Conditioning: Yes Engine Control System: Yes Restraint System: Yes General Maintenance: Yes Periodic Lubrication: Yes Procedures Included Maintenance Procedures: Yes Troubleshooting: Yes (Advanced Troubleshooting Guide) Repair Procedures: Yes (Step-by-step) Rebuilding Refurbishment Restoration: Yes (Covers all aspects) Tuning: Yes (Includes tuning) Technical Depth Depth Of Coverage: Complete Factory Service Information (same as professional technicians) Detail Level: Incredibly detailed, step-by-step instructions, diagrams, photos, illustrations, notes, cautions, warnings 📊 Manual Specifications File Format File Format: PDF Searchability: Searchable Print Quality Printability: Printable without restriction (individual pages or entire manual) Resolution: High Resolution Binding Type Binding Type: N/A (Digital Download - printable) Paper Type Paper Type: N/A (Digital Download - user printable) ⚙️ Engine Specifications Primary Engine Engine Type: Inline 4-cylinder, OHV Displacement: 1275 cc (77.8 cu in) Bore X Stroke: 70.61 mm x 81.28 mm (2.78 in x 3.20 in) Compression Ratio: Varies by specification, typically 8.8:1 or higher Performance Horsepower: Approximately 59-65 bhp (net) at 5500-6000 rpm (specific figures vary by market and exact tune) Torque: Approximately 70-75 lb-ft (net) at 3000-3500 rpm (specific figures vary) Fuel System Fuel Delivery: Twin SU Carburetors (e.g., 1.5 inch HS4) or potentially Lucas Fuel Injection in later models/specific markets, though twin carbs were standard for the GT. Fuel Type: Unleaded gasoline (post-lead removal) Engine Oil Capacity Oil Capacity: Approx. 4.5 liters (4.8 US quarts) with filter change (check manual for precise specification) Engine Oil Specification Oil Viscosity: Typically 20W-50 or 10W-40, depending on climate and period recommendations (manual will specify) 🔧 Transmission Standard Transmission Type: 4-speed manual transaxle Optional Optional Transmission: None typically offered for the 1275 GT model specifically Features Gear Ratios: Detailed in manual; generally includes close ratios for sporty driving. Fluid Type Transmission Fluid Type: Hypoid Gear Oil (e.g., SAE 80W-90) or specific manual gearbox oil (check manual for specification) Fluid Capacity Transmission Fluid Capacity: Approx. 1.8 liters (1.9 US quarts) (check manual for precise specification) 📐 Dimensions Exterior Length: Approx. 3076 mm (121.1 in) Width: Approx. 1408 mm (55.4 in) Height: Approx. 1316 mm (51.8 in) Wheelbase: Approx. 2032 mm (80.0 in) Weights Curb Weight: Approx. 680-700 kg (1500-1540 lbs) Gross Vehicle Weight Rating: Not explicitly stated, but estimated around 1000 kg (2200 lbs) Interior Seating Capacity: 4 🛡️ Safety Features Ratings Crash Test Ratings: Not applicable by modern standards; vehicles of this era were not subjected to the same rigorous testing. Active Features Braking System: Front disc brakes (typically 7.5-inch or 8.4-inch depending on spec), rear drum brakes. Passive Features Seat Belts: Lap belts standard; inertia reel or three-point belts may have been optional or fitted during upgrades. Body Structure: Unitary construction with integral safety cage elements (inherent Mini design). 💡 Technology Features Infotainment Infotainment System: Basic analogue radio (optional), heater controls. No electronic displays or navigation typical of modern vehicles. Driver Assistance Driver Assistance Features: None. This is a classic car without modern driver aids. Connectivity Connectivity Options: None. 🔧 Maintenance Service Intervals Oil Change Interval: Typically every 3,000-5,000 miles or 6-12 months, as per manual recommendations. Older vehicles may require more frequent checks. Tune Up Interval: As needed, but regular checks of spark plugs, ignition timing, and carburetor settings are recommended every 6,000-12,000 miles. Fluid Specifications Coolant Type: Ethylene glycol-based antifreeze (typically 50/50 mix with water). Specific concentration and type detailed in manual. Brake Fluid Type: DOT 3 or DOT 4 brake fluid (check manual for specific DOT rating and type). Known Issues Rust And Corrosion: Common on all Minis of this era, particularly around wheel arches, sills, floor pans, and subframes. Hydrolastic Suspension Leaks: While not fitted to all 1275 GT models (some had conventional rubber cones),...