🏷️ Basic Information Identification Make: BMW Model: R80GS / R100GS Year: 1989 Codes Engine Codes: R80GS: 247E, R100GS: 247D 👋 Introduction Market Position Segment: Dual-sport / Adventure motorcycle Target Audience: BMW motorcycle owners, mechanics, and enthusiasts seeking detailed technical information for maintenance and repair Competitive Analysis Rivals: Honda Africa Twin, Yamaha Tenere, Suzuki DR-Z, Kawasaki KLR Key Features Model Highlight: Robust air-cooled boxer twin engines, shaft drive, capable off-road suspension (especially the R100GS with Monolever and longer travel forks) 📋 Manual Details Coverage Areas Primary Coverage: Comprehensive service, repair, and maintenance for BMW R80GS and R100GS models Secondary Coverage: Troubleshooting, diagnostics, electrical systems, component overhauls Page Count Estimated Pages: High (typically 300-500+ pages for this type of manual) Manual Type Type: Workshop Service and Repair Manual Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine: Engine disassembly, assembly, tuning, valve clearance adjustment, carburation, lubrication system Transmission: Gearbox removal, disassembly, assembly, clutch operation, final drive maintenance Chassis And Suspension: Front fork (BMW 'Telelever' precursor for R100GS), rear Monolever swingarm, bearings, steering head Brakes: Brake system inspection, hydraulic fluid service, caliper maintenance, master cylinder, brake pad replacement Electrical System: Ignition system, battery, charging system (alternator, regulator), lighting, starter motor, wiring diagrams Fuel System: Fuel tank, fuel lines, fuel pump (if applicable), carburetor service and tuning (Dell'Orto, Bing) Exhaust System: Exhaust pipe and muffler inspection, mounting, and replacement Bodywork And Frame: Frame inspection, body panel removal and installation, seat, fuel tank mounting Procedures Included Maintenance: Oil changes, filter replacements, spark plug service, chain adjustment (if applicable), tire pressure checks, battery maintenance Repair: Engine rebuild, transmission overhaul, suspension component replacement, electrical fault finding, brake caliper rebuild Troubleshooting: Diagnostic flowcharts, common problem identification and solutions Technical Depth Depth: In-depth coverage suitable for professional mechanics and experienced DIY enthusiasts, including detailed torque specifications and procedures 📊 Manual Specifications File Format Quality: Likely scanned from original manuals, quality can vary but generally readable for professional use. Searchable text capability depends on the PDF creation. Print Quality Printability: Designed for digital viewing; printing may result in standard PDF print output quality. Binding Type Binding: Not applicable (digital PDF format) Paper Type Paper Type: Not applicable (digital PDF format) ⚙️ Engine Specifications Primary Engine Type: Air-cooled, four-stroke, flat-twin (boxer) engine Displacement R80: 797.5 cc Displacement R100: 980 cc Bore Stroke R80: 84.8 mm x 70.6 mm Bore Stroke R100: 94 mm x 70.6 mm Performance Horsepower R80: Approx. 50 hp @ 6,500 rpm Horsepower R100: Approx. 60 hp @ 6,500 rpm Torque R80: Approx. 58 Nm (43 lb-ft) @ 5,000 rpm Torque R100: Approx. 70 Nm (52 lb-ft) @ 5,000 rpm Fuel System Carburetors: Dual Bing or Dell'Orto carburetors (e.g., 32mm or 36mm depending on specific model variant) Fuel Type: Unleaded gasoline (min. 91 RON recommended) 🔧 Transmission Standard Type: 5-speed manual transmission Drive: Shaft drive to rear wheel Features Clutch: Single dry plate, cable-operated clutch 📐 Dimensions Exterior Wheelbase R80Gs: Approx. 1,450 mm (57.1 in) Wheelbase R100Gs: Approx. 1,465 mm (57.7 in) Weights Dry Weight R80Gs: Approx. 195 kg (430 lbs) Dry Weight R100Gs: Approx. 205 kg (452 lbs) Fuel Capacity: Approx. 20 liters (5.3 US gal), including 3 liters reserve 🛡️ Safety Features Ratings Crash Safety: Not applicable (motorcycle specific safety not rated like cars) Active Features Braking System: Dual disc front brakes (e.g., 285mm), single disc rear brake (e.g., 275mm) with BMW's early integral brake system variations (depending on market/year) Suspension Features: Long travel suspension, adjustable damping and preload on rear shock (R100GS), telescopic front forks Passive Features Lighting: Halogen headlight, integrated turn signals, taillight, brake light 💡 Technology Features Infotainment Audio System: Not applicable (basic touring motorcycle of the era, no built-in infotainment) Driver Assistance ABS: ABS was not a standard or commonly available option on these 1989 models Connectivity Connectivity Features: Not applicable (no electronic connectivity features) 🔧 Maintenance Service Intervals Oil Change: Every 5,000 - 10,000 km (3,000 - 6,000 miles) or annually, depending on usage Valve Clearance: Every 10,000 - 20,000 km (6,000 - 12,000 miles), crucial for boxer engine health Gearbox Oil: Every 20,000 km (12,000 miles) Fluid Specifications Engine Oil: SAE 20W-50 or SAE 15W-40 motorcycle-specific oil (API SG or higher) Brake Fluid: DOT 4 hydraulic fluid Gearbox Oil: SAE 75W-90 or SAE 80W-90 API GL-5 gear oil Final Drive Oil: SAE 80W-90 API GL-5 gear oil Known Issues Clutch Lever Play: Can develop excessive play; requires adjustment Monolever Pivot Bearing: Wear on the Monolever pivot bearing can cause handling issues (R100GS) Carburetor Sync: Carburetors require regular synchronization for smooth running Ignition Module: Early electronic ignition modules can be prone to failure Exhaust Cracks: Cracks can develop in exhaust headers due to vibration 📚 Vehicle History Brand Heritage Bmw Motorrad: BMW Motorrad has a long history of producing reliable, technologically advanced motorcycles, particularly known for its...