🏷️ Basic Information Identification Make: BMW Model: R850GS Year: 1998 Variant: R850 R850GS Engine Variant: All Models/Engines/Trim/Transmissions 👋 Introduction Market Position Category: Mid-size adventure touring motorcycle. Target Audience: Owners and independent mechanics seeking detailed repair and maintenance information. Competitive Analysis Competitors 1998: Honda Transalp, Suzuki V-Strom (later models), Kawasaki KLR650, Yamaha XT660 Tenere (later models). Key Features Engine Layout: Air-cooled, flat-twin (boxer) engine. Suspension Front: BMW's patented Telelever front suspension for improved handling and reduced dive. Suspension Rear: Paralever single-sided swingarm for shaft drive. Drive Type: Shaft drive. 📋 Manual Details Coverage Areas General Coverage: Comprehensive service, maintenance, and troubleshooting for the BMW R850 R850GS 1998. Page Count Estimated Pages: Varies by specific edition; typically 300-500 pages for a full workshop manual. Manual Type Type: Workshop Repair Service Manual Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine: Detailed diagnostics, repair, overhaul, and troubleshooting for the 848cc boxer-twin engine. Fuel System: Fuel injection system (Bosch Motronic), fuel pump, injectors, fuel tank, lines, and filters. Ignition System: Ignition coils, spark plugs, ECU control, timing. Transmission: Clutch operation, gearbox internal components, shift mechanism, final drive. Suspension: Front Telelever suspension system, rear Paralever swingarm, shock absorbers, fork seals, bearings. Brakes: Front and rear brake systems (likely ABS II or ABS III), brake discs, calipers, master cylinders, fluid replacement, bleeding procedures. Electrical System: Wiring diagrams, charging system (alternator, regulator), starter motor, battery, lighting, switches, fuses, relays, instrument cluster. Frame Chassis: Frame inspection, alignment, steering head bearings, wheel bearings. Bodywork: Fairing removal and installation, seat, tank cover, mudguards, side panels. Procedures Included Maintenance: Regular service checks, oil changes, filter replacements, lubrication points, valve clearance adjustment. Troubleshooting: Diagnostic procedures for common and uncommon issues, error code interpretation (if applicable). Repair: Step-by-step instructions for component repair and replacement. Rebuild: Complete engine and gearbox rebuild procedures with torque specifications. Disassembly Assembly: Detailed instructions for dismantling and reassembling all major vehicle systems. Technical Depth Depth: Comprehensive, from basic rider maintenance to complete engine rebuilds and advanced diagnostics. 📊 Manual Specifications File Format File Type: PDF Searchability: Likely text-searchable if professionally created. Print Quality Printability: Designed for printing individual sections or the entire manual. Binding Type Binding: Not applicable (PDF Download) Paper Type Paper Quality: Not applicable (PDF Download) ⚙️ Engine Specifications Primary Engine Engine Type: Air-cooled, four-stroke, flat-twin (boxer) engine. Displacement: 848 cc (51.7 cu in) Bore X Stroke: 90.0 mm x 66.0 mm (3.54 in x 2.60 in) Compression Ratio: 10.0:1 Valve Train: SOHC, 2 valves per cylinder. Performance Horsepower: Approx. 70 hp @ 7000 rpm (manufacturer specific). Torque: Approx. 75 Nm (55 lb-ft) @ 5500 rpm (manufacturer specific). Fuel System Fuel Delivery: Electronic Fuel Injection (EFI) - Bosch Motronic. Fuel Type: Unleaded gasoline, minimum 91 octane (RON+MON)/2. Fuel Tank Capacity: Approx. 20 liters (5.3 US gal). 🔧 Transmission Standard Type: 5-speed manual gearbox. Final Drive: Shaft drive. Features Clutch Type: Single dry plate, diaphragm spring. 📐 Dimensions Exterior Length: Approx. 2,225 mm (87.6 in) Width: Approx. 900 mm (35.4 in) at handlebars Height: Approx. 1,400 mm (55.1 in) at seat Wheelbase: Approx. 1,490 mm (58.7 in) Weights Dry Weight: Approx. 212 kg (467 lbs) Gross Vehicle Weight Rating: Approx. 420 kg (926 lbs) 🛡️ Safety Features Ratings ABS: Optional ABS II or ABS III available on some models. Active Features Braking System: Hydraulically operated dual disc front brake, single disc rear brake. Passive Features Lighting: Halogen headlamp, LED taillight and turn signals (standard). 💡 Technology Features Infotainment Instrument Cluster: Analog speedometer and tachometer, LCD display for odometer, trip meters, fuel level, and warning lights. May include optional analog temperature gauge. Driver Assistance ABS: Optional anti-lock braking system (ABS) available, providing enhanced safety during braking. Connectivity Charging Port: Provision for optional accessory socket/cigarette lighter for charging electronic devices. 🔧 Maintenance Service Intervals Oil Change: Every 10,000 km (6,000 miles) or annually. Major Service: Every 20,000 km (12,000 miles) including valve checks, fuel system inspection, etc. Fluid Specifications Engine Oil: SAE 20W-50 or SAE 15W-40 API SG or higher (refer to manual for exact BMW specification). Engine Oil Capacity: Approx. 3.0 liters (3.2 US qt) without filter change, 3.5 liters (3.7 US qt) with filter change. Gearbox Oil: SAE 80W-90 API GL-5. Final Drive Oil: SAE 80W-90 API GL-5. Brake Fluid: DOT 4. Known Issues Common Problems: Potential for wear in the Telelever ball joint, clutch slave cylinder leaks, occasional ABS system issues, fuel pump reliability. Preventative Maintenance: Regular inspection of suspension components, timely brake fluid changes, and ensuring proper fuel system cleaning. 📚 Vehicle History Brand Heritage Bmw Motorcycles: BMW has a long and storied history in motorcycle manufacturing, dating back to the 1920s, known for engineering excellence, boxer engines, and shaft drive. Model Evolution R Series Lineage: The R850GS is part of the R-series GS (Gelände/Straße - Offroad/Road) line, which began with the...