🏷️ Basic Information Identification Make: BMW Model: R100 Year: 1986 Sub Model: Various (e.g., R100RT, R100RS, R100GS, R100R, R100CS) Codes Engine Code Family: Type 247 👋 Introduction Market Position Segment: Premium Motorcycle / Sport Touring / Adventure Touring Target Audience: Enthusiast owners, independent repair shops, restoration specialists Competitive Analysis Comparative Advantage: Known for robust engineering, air-cooled boxer engines, and long-distance capability. This manual provides the in-depth technical knowledge required to maintain this legendary platform. Key Features Manual Value Proposition: Empowers owners and technicians to perform all necessary maintenance and repairs, preserving the performance and longevity of the BMW R100. Vehicle Legacy: The R100 is part of BMW's highly successful air-cooled boxer engine lineage, a design that defined the brand for decades. 📋 Manual Details Coverage Areas Primary Coverage: Full Service Repair and Maintenance Secondary Coverage: Troubleshooting, Diagnostics, Rebuilding, Refurbishment, Restoration Page Count Estimated Page Count: 400-600 (typical for comprehensive service manuals of this era) Manual Type Type: Factory Service Manual / Workshop Manual Language Language: English Format Format: Digital (likely PDF), potentially print 📖 Manual Coverage Systems Covered Engine: Complete engine disassembly, assembly, tuning, and overhaul (including cylinder heads, pistons, crankshaft, camshaft, valve train, lubrication system, cooling system - air cooling). Fuel System: Carburetor service and adjustment (e.g., Bing), fuel pump, fuel lines, fuel tank maintenance. Transmission: Gearbox maintenance, repair, and overhaul (including clutch, shifting mechanisms, final drive). Electrical System: Wiring diagrams, ignition system (points, coil, spark plugs), charging system (alternator, regulator), lighting, starter motor, battery maintenance. Brakes: Front and rear brake system maintenance, repair, and bleeding (typically disc brakes). Suspension: Front forks (e.g., telescopic, leading axle) and rear shock absorber maintenance, adjustment, and overhaul. Frame And Bodywork: Chassis inspection, fairing removal/installation (if applicable), seat maintenance, fender, and general body component repair. Wheels And Tires: Wheel bearing service, tire pressure, tire wear, spoke tension (if applicable). Procedures Included Maintenance: Scheduled maintenance, oil changes, filter replacements, lubrication points, spark plug checks, valve clearance adjustments. Troubleshooting: Diagnostic charts, common problem identification, and step-by-step solutions for various issues. Repair: Detailed instructions for component replacement and repair across all systems. Rebuild Overhaul: Comprehensive guides for complete engine, gearbox, and suspension rebuilds. Adjustment Procedures: Detailed procedures for carburetor synchronization, ignition timing, valve clearance, brake lever adjustment, clutch play, and suspension settings. Technical Depth Depth: Expert Level - Suitable for professional technicians and experienced DIY mechanics. Diagnostics: Advanced diagnostic procedures, including electrical system tracing and mechanical component testing. Special Tools: Lists and diagrams of specific tools required for certain procedures (e.g., valve seat grinding tools, flywheel pullers, etc.). 📊 Manual Specifications File Format Digital Format: PDF (Searchable Text, High Resolution Scans) Print Quality Print Quality: High-resolution scans, clear diagrams and text Binding Type Binding Type: N/A (for digital), Spiral-bound or Perfect-bound (if printed) Paper Type Paper Type: N/A (for digital), Heavyweight paper suitable for workshop use (if printed) Completeness Manual Scope: Covers all systems and components required for comprehensive maintenance and repair, from routine service to full engine rebuilds. ⚙️ Engine Specifications Primary Engine Type: Air-cooled, four-stroke, horizontally opposed twin-cylinder (Boxer) Displacement: 980 cc (approx. 59.8 cu in) Bore X Stroke: 94 mm x 70.6 mm (approx.) Compression Ratio: Typically 8.5:1 to 9.5:1, depending on specific R100 variant. Valvetrain: OHV (Overhead Valve), two valves per cylinder, pushrod actuated. Performance Horsepower Peak: 65-70 hp (approx. at 7000 rpm), depending on variant. Torque Peak: 55-60 lb-ft (approx. at 5500 rpm), depending on variant. Fuel System Carburetors: Dual Bing constant-velocity carburetors (e.g., 32mm or 40mm depending on model). Fuel Type: Unleaded gasoline, 91 octane (RON+MON)/2 or higher recommended. Lubrication System Oil Capacity: Approx. 2.75 liters (2.9 US quarts) with filter change. Oil Filter Type: Spin-on cartridge type (e.g., Mann-Filter MW 64, Bosch 0986 452 012, or equivalent). 🔧 Transmission Standard Type: 5-speed manual transmission Final Drive: Shaft drive (enclosed driveshaft). Features Clutch Type: Single dry plate, diaphragm spring clutch. Transmission Oil Type: Gear oil, SAE 75W/90 or 80W/90 GL-5 (or specified by BMW). Transmission Oil Capacity Capacity: Approx. 1.5 liters (1.6 US quarts). 📐 Dimensions Exterior Wheelbase: Varies by model, approx. 1465 mm (57.7 inches) for R100RT. Weights Dry Weight: Varies by model, approx. 200-230 kg (440-507 lbs). Gross Vehicle Weight Rating Gvwr: Typically around 400-430 kg (880-950 lbs). 🛡️ Safety Features Ratings Crash Test Ratings: N/A (Motorcycle safety ratings as we know them today were not standardized in 1986). Active Features Braking System: Dual disc front brake, single disc rear brake (typically Brembo or similar quality components). Passive Features Frame Construction: Steel tubular frame for rigidity and stability. 💡 Technology Features Infotainment Features: Basic instrumentation: speedometer, tachometer, odometer, trip meter, gear indicator (on some models), warning lights. No modern infotainment systems. Driver Assistance Features: None (focus on mechanical and rider feedback). Connectivity Features: None. 🔧 Maintenance Service Intervals Oil Change Interval: Every 5,000 - 10,000 km (3,000 -...