🏷️ Basic Information Identification Make: BMW Model: R100 Year: 1984 Market Segment: Motorcycle (Touring/Sport Touring) Codes Chassis Code: R100RT, R100RS, R100CS, R100GS (depending on specific variant within R100 range) Engine Code Family: Type 247 👋 Introduction Market Position Historical Significance: The BMW R100 series, particularly the 1984 models, represents the zenith of BMW's air-cooled boxer twin motorcycle development, blending touring comfort (RT), sporty performance (RS), and rugged versatility (GS). Competitive Analysis Segment Competitors: Competed against other large-displacement European and Japanese motorcycles of the era, such as Moto Guzzi, Honda Gold Wing variants, and certain Kawasaki/Suzuki models, often positioning itself as a premium, technically advanced option. Key Features Engine Design: Reliable air-cooled, horizontally opposed twin-cylinder boxer engine. Drivetrain: Shaft drive, renowned for low maintenance and reliability. Handling: Excellent handling characteristics for its size, due to the low center of gravity of the boxer engine. Build Quality: Legendary BMW build quality and durability. 📋 Manual Details Coverage Areas Manual Type: Service and Repair Manual Language: English Format: Downloadable Digital File (PDF) Coverage Scope: All variants of the 1984 BMW R100 Applicable Models: BMW R100, R100RT, R100RS, R100CS (and potentially closely related variants from 1984). Page Count Estimated Page Count: 300-400 Pages (typical for comprehensive manual) 📖 Manual Coverage Systems Covered Engine: Full engine disassembly, assembly, tuning, diagnostics, and component specifications (including R100, R100S, R100RT, R100CS variants). Transmission: Gearbox (5-speed), clutch, final drive maintenance and repair. Fuel System: Carburetor systems (e.g., Bing 32/40), fuel tanks, fuel lines, fuel pump troubleshooting. Electrical System: Ignition system, lighting, charging system (alternator, regulator), starter motor, battery, wiring diagrams. Brakes: Front and rear brake systems (disc brakes), hydraulic components, bleeding procedures. Suspension: Front forks (telescopic), rear swingarm, shock absorbers, linkage maintenance and adjustment. Chassis And Bodywork: Frame, fairings (RT/RS models), seat, handlebars, fenders, body panel removal and installation. Wheel And Tire: Wheel bearing maintenance, tire replacement, wheel balance. Frame And Steering: Steering head bearing maintenance, fork seal replacement, frame inspection. Procedures Included Routine Maintenance: Oil changes, filter replacement, spark plug servicing, valve adjustment, chain adjustment (if applicable), lubrication points. Troubleshooting: Diagnostic flowcharts and procedures for common issues across all major systems. Component Overhaul: Detailed step-by-step instructions for rebuilding key components like engines, transmissions, and brake calipers. Electrical Diagnostics: Wiring diagrams, testing procedures for electrical components, fault finding. Specifications And Data: Torque values, clearances, fluid capacities, part numbers, electrical resistance values. Assembly Disassembly: Complete disassembly and reassembly procedures for all major motorcycle components. Adjustment Procedures: Detailed instructions for adjusting clutch, brakes, carburetors, and suspension settings. Technical Depth Depth Of Coverage: Comprehensive (from basic maintenance to full engine rebuilds and advanced electrical diagnostics). Diagnostic Capability: Enables owner/mechanic to diagnose and repair most mechanical and electrical faults. 📊 Manual Specifications File Format Digital Format: PDF Searchability: Text-searchable for quick information retrieval. Print Quality: High-resolution, printable pages. Compatibility: Compatible with most PDF readers on computers, tablets, and smartphones. Binding Type Print Binding: N/A (Digital Download) Paper Type Print Paper: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Type: Air-cooled, four-stroke, horizontally opposed twin-cylinder boxer Displacement: 980 cc Bore X Stroke: 94 mm x 70.6 mm Compression Ratio: 8.4:1 (typical for R100 models) Valve Train: OHV, 2 valves per cylinder, pushrod actuated Engine Oil Capacity: 2.5 liters (with filter change) Engine Oil Type: SAE 20W-50 or 10W-40 motorcycle specific oil Performance Horsepower: Approx. 70-75 HP @ 7000-7500 RPM (depending on model variant and tuning) Torque: Approx. 55-60 lb-ft @ 5500-6000 RPM (depending on model variant) Fuel System Carburetor Type: Dual Bing constant-velocity carburetors (e.g., 32mm or 40mm depending on model) Fuel Type: Unleaded Gasoline, 90-95 RON (Octane Rating) 🔧 Transmission Standard Transmission Type: 5-speed manual, constant mesh gearbox Clutch Type: Dry, single-plate clutch Final Drive: Shaft drive with hypoid final drive Features Gearbox Oil Type: SAE 80W-90 hypoid gear oil Final Drive Oil Type: SAE 80W-90 hypoid gear oil 📐 Dimensions Exterior Wheelbase: Approx. 1465 mm (57.7 inches) (varies slightly by model) Seat Height: Approx. 780-820 mm (30.7-32.3 inches) (varies by model) Weights Dry Weight: Approx. 200-230 kg (440-507 lbs) (varies by model) Fuel Tank Capacity: 24 liters (6.3 US gallons) Gross Vehicle Weight Rating: Typically around 400-450 kg (880-990 lbs) 🛡️ Safety Features Ratings Safety Standard Era: Designed to meet safety standards of the early 1980s. Active Features Braking System: Dual front disc brakes, single rear disc brake (typically Brembo or ATE calipers). Tire Specifications: Tubed or tubeless tires, commonly 100/90-18 front and 120/90-18 or 130/90-17 rear (specific sizes vary by model). Passive Features Lighting: Halogen headlight, integrated turn signals, brake light. 💡 Technology Features Infotainment Infotainment System: None (period-appropriate technology, focus is on mechanicals). Driver Assistance Driver Assistance Features: None (focus on rider control and mechanical feedback). Connectivity Connectivity Features: None. 🔧 Maintenance Service Intervals Oil Change Interval: Every 5,000 km (3,000 miles) or annually. Valve Adjustment Interval: Every 10,000...