🏷️ Basic Information Identification Make: BMW Model: R80 GS / R100 GS Model Series: R Series Airhead (Dual Sport) Chassis Codes: 247E (R80GS), 247E (R100GS) Vehicle Type: Dual Sport Motorcycle 👋 Introduction Market Position Segment: Iconic dual-sport motorcycles, renowned for their ruggedness and versatility for on-road and off-road touring. Competitive Analysis Competitors: Competed against bikes like Yamaha XT600, Honda Africa Twin (later models), Kawasaki KLR650. Key Features Engine Type: Air-cooled, horizontally opposed twin-cylinder ('boxer') Drivetrain Type: Shaft drive Suspension Design: Long-travel suspension, Monolever rear suspension (from 1987 onwards for R100GS, R80GS) or dual shocks (earlier GS models). Durability: Known for robust construction and reliability for long-distance travel and adventure riding. 📋 Manual Details Coverage Areas Engine: Yes Transmission: Yes Drivetrain: Yes Suspension: Yes Brakes: Yes Electrical System: Yes Fuel System: Yes Exhaust System: Yes Frame And Bodywork: Yes Wheels And Tires: Yes Tools And Special Equipment: Yes Troubleshooting: Yes Page Count Estimated Pages: Varies by specific edition, typically 300-500+ pages Manual Type Type: Workshop Repair Service Manual Language Language: English (likely, based on product description) Format Format: Downloadable PDF 📖 Manual Coverage Systems Covered Engine Internals: Cylinder head, valves, pistons, connecting rods, crankshaft, lubrication system, timing Fuel Delivery: Carburetor overhaul (Bing), fuel tank, fuel lines, fuel pump (if applicable) Ignition System: Ignition timing, spark plugs, coils, electronic ignition components Transmission Gearbox: Gear shifting mechanism, clutch operation, gearbox disassembly and assembly Final Drive: Driveshaft, universal joint, rear axle housing, final drive gears, bearings Front Suspension: Telescopic forks, fork seals, oil levels, springs, steering head bearings Rear Suspension: Monolever swingarm, shock absorber, linkage system (if applicable), pivot bearings Braking System: Hydraulic brake system, brake levers, master cylinders, calipers, brake discs, brake pads, bleeding procedures Electrical Components: Wiring diagrams, battery, starter motor, alternator, lights, horn, switches, fuses Chassis And Frame: Frame inspection, subframe, mounting points Procedures Included Routine Maintenance: Oil changes, filter replacement, spark plug checks, valve clearance adjustments, chain lubrication/adjustment (if applicable) Engine Rebuild: Top-end and bottom-end engine overhauls, component replacement Carburetor Tuning: Adjustment, cleaning, and synchronization of Bing carburetors Fork Rebuild: Fork seal replacement, oil level correction, spring replacement Shock ABSorber Service: Adjustment, replacement Brake Bleeding: Proper procedure for removing air from the hydraulic brake system Electrical Diagnostics: Troubleshooting common electrical faults using wiring diagrams Wheel Balancing: Tire mounting and wheel balancing procedures Bodywork Repair: Fairing, fuel tank, and fender removal/installation Technical Depth Depth: Comprehensive: Covers all aspects from basic maintenance to complete engine and component rebuilds. Diagnostic Capabilities: Includes common problems, symptoms, and diagnostic procedures. Torque Specifications: Detailed torque values for all critical fasteners. Illustrations: Clear, step-by-step illustrations and diagrams. 📊 Manual Specifications File Format Format: PDF Searchability: Typically text-searchable for easy information retrieval. Print Quality Quality: High-resolution for clear viewing of diagrams and text. Binding Type Binding: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine R80Gs Engine Type: Air-cooled, four-stroke, horizontally opposed twin-cylinder (boxer) R80Gs Displacement: 797.5 cc (48.7 cu in) R80Gs Bore X Stroke: 84.8 mm x 70.6 mm R100Gs Engine Type: Air-cooled, four-stroke, horizontally opposed twin-cylinder (boxer) R100Gs Displacement: 980 cc (59.8 cu in) R100Gs Bore X Stroke: 94 mm x 70.6 mm Performance R80Gs Horsepower: Approx. 50 hp (37 kW) @ 6,500 rpm R80Gs Torque: Approx. 56 Nm (41 lb-ft) @ 5,000 rpm R100Gs Horsepower: Approx. 65 hp (48 kW) @ 7,000 rpm R100Gs Torque: Approx. 70 Nm (52 lb-ft) @ 5,500 rpm Fuel System Carburetion: Dual Bing Constant Velocity (CV) carburetors (e.g., 32mm for R80GS, 40mm for R100GS) Fuel Type: Unleaded gasoline Fuel Capacity: Approx. 24 liters (6.3 US gal), including reserve 🔧 Transmission Standard Type: 5-speed manual gearbox Features Clutch: Single dry plate clutch, hydraulically operated Final Drive: Shaft drive to rear wheel 📐 Dimensions Exterior Length: Varies by model year and specific configuration, typically around 2200 mm (86.6 in) Width: Approx. 800 mm (31.5 in) at handlebars Height: Varies by model and seat height, approx. 1300 mm (51.2 in) to top of screen Wheelbase: Approx. 1430 mm (56.3 in) Weights Dry Weight: R80GS: Approx. 190 kg (419 lbs); R100GS: Approx. 200 kg (441 lbs) Gross Vehicle Weight Rating: Approx. 390 kg (860 lbs) 🛡️ Safety Features Ratings Crash Test Data: N/A (Motorcycle specific crash testing standards differ significantly from automobiles) Active Features Braking System: Dual front disc brakes, single rear disc brake (dual piston calipers common on later models) Suspension Handling: Long-travel suspension designed for varied terrain, offering stability and control. Passive Features Lighting: Halogen headlight, taillight, turn signals. Frame Construction: Robust tubular steel frame for structural integrity. 💡 Technology Features Infotainment Features: Minimal by modern standards; primarily focused on mechanical operation. Features typically include analog gauges (speedometer, tachometer), odometer, trip meter, and indicator lights. Driver Assistance Features: None (N/A for this era of motorcycle). Connectivity Features: None (N/A for this era of motorcycle). 🔧 Maintenance...