🏷️ Basic Information Identification Make: BMW Model: R100 Year: 1982 Codes Engine Code: R100 Series Twin-cylinder Boxer 👋 Introduction Market Position Positioning: Essential resource for owners and technicians of the iconic BMW R100 series motorcycles from 1982. Competitive Analysis Comparative Value: Provides the definitive technical data and procedural guidance necessary for maintaining and repairing this classic airhead BMW, surpassing generic repair guides. Key Features Uniqueness: Covers the specific nuances of the 1982 R100 models, offering detailed insights often missing in broader BMW manuals. Target Audience: DIY enthusiasts, classic motorcycle mechanics, and BMW R100 owners seeking to maintain their vehicle's originality and performance. 📋 Manual Details Coverage Areas Systems Covered: Engine, Transmission, Drivetrain, Chassis, Electrical System, Fuel System, Braking System, Suspension, Bodywork, Troubleshooting, Diagnostics Page Count Total Pages: Estimated 400-600 Pages (Typical for Comprehensive Service Manuals of this era) Manual Type Type: Full Service and Repair Manual Language Language: English Format Format: Digital (PDF) or Printed (as specified by seller) 📖 Manual Coverage Systems Covered Engine Overhaul: Complete engine disassembly, inspection, repair, and reassembly for the R100 boxer engine. Transmission Service: Detailed procedures for gearbox maintenance, repair, and rebuild. Drivetrain Maintenance: Shaft drive system maintenance, including universal joints and final drive unit. Electrical Diagnostics: Wiring diagrams, troubleshooting guides for ignition, lighting, charging systems. Fuel System Calibration: Carburetor (likely Bing) adjustment, overhaul, and tuning procedures. Braking System Overhaul: Front and rear brake system maintenance, including caliper rebuild and fluid replacement. Suspension Adjustment: Front fork and rear shock absorber service, adjustment, and replacement. Bodywork Restoration: Fairing, tank, seat, and fender repair and refurbishment guidance. Procedures Included Scheduled Maintenance: Detailed maintenance schedules, lubrication points, and inspection checklists. Troubleshooting Guides: Systematic diagnostic procedures for common and uncommon faults. Rebuild Instructions: Step-by-step instructions for major component rebuilds, including the engine. Technical Adjustments: Valve clearance adjustment, ignition timing, carburetion tuning. Wiring Diagrams: Comprehensive electrical schematics for all vehicle systems. Carburetor Synchronization: Detailed instructions on balancing the dual Bing carburetors for optimal performance and fuel economy. Wheel Bearing Service: Procedure for inspecting, repacking, and replacing wheel bearings. Clutch Adjustment And Replacement: Guidance on adjusting clutch cable play and replacing clutch components. Technical Depth Depth Level: Comprehensive (from basic maintenance to full engine and transmission rebuilds) Diagnostic Capabilities: Extensive troubleshooting trees for electrical and mechanical issues, aiding in precise fault diagnosis. 📊 Manual Specifications File Format Digital Quality: High-resolution scans of original factory manual pages, searchable text often included. Searchability: Optimized for digital use with keywords and internal links for quick navigation. Print Quality Print Quality: Professional printing on durable paper (if applicable) Binding Type Binding: Spiral-bound or Perfect-bound for lay-flat use in a workshop environment (if applicable) Paper Type Paper: Durable, oil-resistant paper (if printed) ⚙️ Engine Specifications Primary Engine Type: Air-cooled, four-stroke, flat-twin (boxer) engine Displacement: 979 cc (approx.) Bore X Stroke: 90.0 mm x 76.0 mm (approx.) Compression Ratio: Typically 8.2:1 or 9.5:1 depending on variant Power Output: Approximately 65-70 hp (48-52 kW) at 6500 rpm (varies by specific R100 model) Torque: Approximately 75-80 Nm (55-59 lb-ft) at 5000 rpm (varies by specific R100 model) Fuel System Carburetor Type: Dual Bing constant velocity carburetors (e.g., 32mm or 40mm depending on model) Fuel Grade: Unleaded gasoline, minimum 91 RON (87 AKI) Ignition System Type: Electronic Ignition (Breakerless) Engine Internal Components Valve Train: Overhead valve (OHV), pushrod actuated Cooling System: Air cooling with prominent finning on cylinders and cylinder heads. 🔧 Transmission Standard Type: 5-speed manual constant mesh gearbox Features Final Drive: Shaft drive Fluid Specifications Gearbox Oil: SAE 90 Hypoid gear oil (or equivalent API GL-4 rated) Fluid Capacities Gearbox Capacity: Approx. 0.8 liters (0.85 US qt) 📐 Dimensions Exterior Wheelbase: Approx. 1465 mm (57.7 inches) Weights Dry Weight: Approx. 210-225 kg (463-496 lbs) depending on model variant (e.g., R100S, R100RT, R100RS) 🛡️ Safety Features Ratings Vintage Safety Standards: Meets safety standards applicable to motorcycles of the early 1980s. Active Features Braking System: Dual disc front brakes, single disc rear brake (on most models); Drum brake on some earlier/simpler models. Passive Features Frame Construction: Steel tubular frame providing robust support. 💡 Technology Features Infotainment Era Appropriate Features: Basic analog instrumentation (speedometer, tachometer, odometer, warning lights); no electronic infotainment systems. Driver Assistance Safety Systems: ABS not available; focus on robust mechanical design and responsive braking. 🔧 Maintenance Service Intervals Oil Change: Every 5,000 - 7,500 km (3,000 - 5,000 miles) or annually. Valve Adjustment: Every 10,000 - 15,000 km (6,000 - 9,000 miles). Spark Plug Replacement: Every 15,000 - 20,000 km (9,000 - 12,000 miles). Fluid Specifications Engine Oil: SAE 20W-50 or SAE 15W-40 (depending on climate); API SG or higher recommended. Brake Fluid: DOT 3 or DOT 4 hydraulic fluid (check manual for specific recommendation). Fluid Capacities Engine Oil Capacity: Approx. 2.5 liters (2.6 US qt) with filter change. Known Issues Common Wear Items: Pushrod tube seals,...