🏷️ Basic Information Identification Make: BMW Model: R100 Model Range: R100 Series (Airhead) Production Years Covered By Manual: 1978-1996 Codes Engine Type Code: M2B44/2 (early R100/7 variants), M2B44/3 (R100S/CS/RS/RT variants), M2B44/5 (R100GS/R variants) 👋 Introduction Market Position Segment: Luxury Touring, Sport Touring, Dual-Sport Adventure Motorcycle Segment Target Audience: Owners and independent mechanics specializing in vintage BMW motorcycles, especially the 'Airhead' era. Competitive Analysis Competitors: Other large displacement motorcycles of the era, such as Honda Gold Wing, Kawasaki KZ series, Yamaha XS series, Moto Guzzi models. Key Features Of Vehicle Engine Configuration: Air-cooled, four-stroke, horizontally opposed twin-cylinder (Boxer) Drivetrain: Shaft drive, renowned for durability and low maintenance. Key Features Of Manual Value Proposition: Essential for maintaining the longevity and performance of a classic and potentially valuable BMW motorcycle. 📋 Manual Details Coverage Areas Model Years: 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996 Specific Models Covered: R100/7, R100S, R100CS (Classic Sport), R100RS (Rennsport), R100RT (Reise-Touren), R100GS (Gelande-Sport), R100R (Roadster), R100GS Paris-Dakar Page Count Estimated Page Count: 500+ Manual Type Type: Repair Service Manual Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine: Complete disassembly, assembly, tuning, troubleshooting, maintenance for the air-cooled boxer twin engine. Fuel System: Carburetor servicing (Dell'Orto, Bing), fuel pump, fuel lines, fuel tank maintenance. Ignition System: Points and condenser, electronic ignition systems (Bosch, later Boyer Bransden or Dyna), coil replacement, spark plug specifications. Transmission And Drivetrain: 5-speed and 6-speed gearbox overhaul, clutch (single dry plate), driveshaft maintenance, final drive unit servicing. Brakes: Hydraulic disc brakes (front and rear), brake caliper servicing, master cylinder overhaul, brake fluid specifications, pad replacement. Suspension: Front fork (telescopic, often Marzocchi or BMW), rear swingarm (Monolever or Paralever), shock absorber servicing and replacement, fork oil specifications. Electrical System: Wiring diagrams, battery maintenance, alternator, starter motor, lighting circuits, fuses, relays, instrument cluster servicing. Frame And Bodywork: Chassis inspection, fairing removal and installation (RS, RT, CS models), seat maintenance, fuel tank removal, exhaust system. Procedures Included Basic Maintenance: Oil changes, filter replacement, spark plug replacement, valve adjustment, carburetor synchronization, chain/shaft drive lubrication. Troubleshooting: Diagnostic procedures for engine performance issues, electrical faults, braking problems, and suspension concerns. Rebuilding And Overhaul: Detailed steps for engine rebuild, transmission overhaul, carburetor rebuild, brake caliper and master cylinder rebuild. Component Replacement: Instructions for replacing wear items such as brake pads, clutch plates, cables, tires, bearings, and seals. Technical Specifications Reference: Torque values, clearances, fluid capacities, electrical specifications, engine tuning parameters. Technical Depth Depth: Comprehensive, covering everything from routine maintenance and adjustments to complete engine and transmission rebuilds, and advanced electrical diagnostics. 📊 Manual Specifications File Format Format: PDF Searchability: Likely text-searchable if converted from a high-quality source. Print Quality Quality: Digital, quality depends on original source. Binding Type Binding: N/A (Digital Download) Paper Type Paper: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Type: Air-cooled, four-stroke, Boxer Twin Bore X Stroke: 98 mm x 70.5 mm (typical for R100) Displacement: 979 cc (980 cc) Compression Ratio: 8.5:1 to 9.5:1 (varies by model and year) Performance Horsepower Approx: 60-70 hp @ 6000-6500 rpm (varies by model) Torque Approx: 75-80 Nm @ 4500-5000 rpm (varies by model) Fuel System Carburetors Standard: Dual Dell'Orto VHBZ 32 (earlier models) or Dual Bing 32/40 CV (later models) Fuel Type: Unleaded gasoline (91 RON or higher recommended, depending on compression ratio) Lubrication Oil Type: SAE 20W-50 or SAE 10W-40 motorcycle-specific engine oil (e.g., BMW Advanced Synthetic, Castrol GTX) Oil Capacity: Approx. 2.5 - 3.0 liters (with filter change) Valve Adjustment Clearance Intake: 0.10 - 0.15 mm (cold engine) Clearance Exhaust: 0.15 - 0.20 mm (cold engine) 🔧 Transmission Standard Type: 5-speed manual (early R100/7, R100S) or 5-speed constant mesh with constant helix gears, BMW Patented Monolever or Paralever rear suspension with shaft drive. Optional Gearbox Variants: Some later models (e.g., R100GS) featured a 5-speed gearbox, while some earlier R100 models had 5-speed. The core design remained consistent. The 'Paralever' rear suspension was introduced in the late 1980s on the R100GS. Features Clutch: Single dry plate, diaphragm spring operation. Transmission Oil Type: SAE 80W-90 GL-5 gear oil Transmission Oil Capacity: Approx. 1.0 liter Final Drive Oil Type: SAE 80W-90 GL-5 gear oil Final Drive Oil Capacity: Approx. 0.2 liters 📐 Dimensions Exterior Length: Varies by model (e.g., ~2.2 meters for R100RT) Width: Varies by model (e.g., ~0.8 meters for R100GS) Height: Varies by model (e.g., ~1.4 meters for R100RT) Weights Dry Weight Approx: 210-240 kg (varies by model and equipment) Fuel Capacity: 24 liters (typical, including reserve) Gross Vehicle Weight Rating Gvwr: Approx. 400-450 kg (varies by model) 🛡️ Safety Features Ratings Safety Standard: N/A (Motorcycle safety standards of the era were different from modern automotive standards; focus is on mechanical integrity and rider protection.) Active Features Braking System: Dual disc front brakes,...