Segment:
Classic European Boxer Twin Motorcycles
Target Audience:
BMW motorcycle owners, mechanics specializing in vintage BMWs, collectors.
Competitors:
Haynes manuals, Clymer manuals, and official BMW factory service bulletins of the era.
Manual Advantage:
Provides detailed, expert-level instructions that were originally used by BMW-trained technicians. Crucial for maintaining the specific engineering of these robust machines.
Historical Value:
Essential documentation for preserving and restoring iconic BMW motorcycles known for their longevity and touring capabilities.
Primary Coverage:
Service, repair, and maintenance for BMW R80, R90, and R100 models from 1982.
Specific Models Covered:
BMW R80, R80/7, R80G/S, R80RT, R90/6, R90S, R100/7, R100RS, R100RT, R100S, R100CS, R100GS (select models depending on specific year coverage within the 1982 timeframe).
Estimated Page Count:
Likely 300-600 pages, typical for comprehensive workshop manuals of this era.
Type:
Workshop Service Repair Manual
Format:
Likely a printed manual or a searchable PDF (digital format).
Engine:
Complete engine disassembly, assembly, tuning, troubleshooting, top-end rebuilds (cylinder heads, valves), bottom-end rebuilds (crankshaft, connecting rods, bearings).
Fuel System:
Carburetor overhaul (Dell'Orto, Bing), fuel pump, fuel lines, fuel tank maintenance.
Transmission:
Gearbox disassembly, assembly, lubrication, shift mechanism troubleshooting, clutch service.
Drivetrain:
Driveshaft (universal joint), final drive unit (bevel gear housing, bearing replacement).
Electrical System:
Ignition system (points, electronic ignition, spark plugs, coils), charging system (alternator, regulator), lighting, starter motor, battery maintenance, wiring diagrams.
Suspension:
Front forks (oil change, seal replacement, spring replacement), rear shock absorbers, swingarm, wheel bearings.
Brakes:
Disc brake overhaul (caliper rebuild, pad replacement), master cylinder, brake lines, bleeding procedures.
Bodywork:
Frame inspection, fairings, seat, fuel tank removal/installation, fenders, exhaust system.
Maintenance:
Routine service, oil changes, filter replacements, spark plug adjustments, valve clearance checks and adjustment, lubrication points, tire pressure checks.
Troubleshooting:
Diagnostic procedures for common starting issues, running problems, electrical faults, braking issues, transmission quirks.
Repair:
Step-by-step instructions for component replacement and repair across all major systems.
Special Tools:
Identification and usage of specialized BMW tools required for certain procedures.
Depth:
Comprehensive, covering everything from basic adjustments to complete engine and transmission rebuilds. Suitable for professional mechanics and advanced DIY enthusiasts.
Digital Format:
Likely PDF, possibly with OCR for searchable text. Print quality of digital versions will vary.
Printed Format:
High-quality paper, clear diagrams and text. Original manuals were typically well-produced.
Printed Binding:
Likely bound with staples, perfect binding, or ring binding for lay-flat use in a workshop.
Printed Paper:
Durable, often slightly glossy paper to withstand workshop conditions.
Engine Type:
Air-cooled, four-stroke, boxer-twin engine.
Engine Displacement R80:
797.5 cc (R80)
Engine Displacement R90:
897.0 cc (R90/6, R90S)
Engine Displacement R100:
979.0 cc (R100/7, R100RS, R100RT, R100S, R100CS, R100GS)
Horsepower R80 Approx:
50 hp @ 6500 rpm
Horsepower R90S Approx:
67 hp @ 7000 rpm
Horsepower R100Rs Approx:
70 hp @ 7000 rpm
Torque R100Rs Approx:
75 Nm (55 lb-ft) @ 5500 rpm
Carburetor Type R80 R100:
Bing 32mm or 40mm (depending on model) or Dell'Orto PHM 40
Carburetor Type R90S:
Dell'Orto PHM 40
Fuel Type:
Unleaded gasoline (octane rating specified in manual, likely 91 RON or higher).
Type:
5-speed constant mesh gearbox.
Type:
N/A (all models featured the 5-speed gearbox).
Clutch Type:
Single dry plate clutch, hydraulically operated.
Gear Ratios:
Vary slightly by model, detailed in the manual.
Final Drive:
Shaft drive, enclosed.
Wheelbase:
Varies by model (e.g., R100RS approx. 1460 mm / 57.5 inches).
Dry Weight:
Varies by model (e.g., R100RS approx. 205 kg / 452 lbs).
Wet Weight:
Varies by model (e.g., R100RS approx. 220 kg / 485 lbs with fluids).
Historical Context:
Safety ratings as per contemporary standards, less stringent than modern vehicles. Focus on mechanical integrity and rider awareness.
Braking System:
Dual disc front brakes (typically Brembo), single disc rear brake (on most models). Highly effective for their time.
Frame Construction:
Steel tube frame, designed for stability and durability.
Oil Change Interval:
Typically every 5,000-10,000 km (3,000-6,000 miles) or annually. Manual will specify exact intervals.
Valve Adjustment Interval:
Typically every 10,000 km (6,000 miles). Critical for engine longevity.
Spark Plug Replacement:
As per manual, often every 10,000-20,000 km (6,000-12,000 miles).
Engine Oil:
Mineral-based motorcycle oil, SAE 20W-50 or 20W-40 typically recommended. Manual will specify BMW approval or API classification (e.g., API SG).
Transmission Oil:
Gear oil, SAE 75W-90 or 80W-90 GL-5. Manual will specify BMW approved or equivalent.
Final Drive Oil:
Gear oil, SAE 80W-90 GL-5. Manual will specify BMW approved or equivalent.
Brake Fluid:
DOT 3 or DOT 4 brake fluid. Manual will specify exact type and replacement interval.
Fork Oil:
Specific weight and type of fork oil, e.g., SAE 15W. Manual will specify quantity and type.
Common Wear Items:
Clutch wear, fork seal leaks, gearbox input shaft seal, rear main seal, swingarm bearings, alternator brushes, starter motor solenoid.
Electrical Quirks:
Loose connections, aging wiring insulation, voltage regulator issues, failing starter motor switches. Manual provides diagnostic steps.
Engine Management:
Carburetor synchronization, jetting for altitude/modifications, ignition timing adjustments. Manual details correct procedures.
Bmw Motorrad Legacy:
BMW Motorrad's reputation for engineering excellence, durability, and innovation, particularly with the boxer engine dating back to the 1920s.
Airhead Development:
These models represent the evolution of the 'Airhead' boxer twins, building on earlier designs with improved performance, comfort, and features like disc brakes and shaft drive.
R100Rs Innovation:
The R100RS was a pioneering sport-touring motorcycle, featuring a full aerodynamic fairing and the most powerful engine of the range at its introduction.
Production Period:
The R80, R90, and R100 series were produced in various forms from the early 1970s through the 1990s. The 1982 models are part of the 'Strich-8'/'7' generation and early GS models.
Reputation:
Renowned for durability, reliability, and exceptional touring comfort. Often awarded 'Motorcycle of the Year' in various publications during their production era.
Longevity:
High ratings for lifespan and resilience, with many examples exceeding 200,000 miles with proper maintenance.
