Primary Coverage:
Comprehensive factory service and repair for BMW R80, R90, and R100 models
Model Variants:
Includes specific sections for R80, R90, and R100 series motorcycles
Estimated Pages:
Hundreds (specific count not provided, but implied to be extensive)
Type:
Factory Service Repair Manual
Language:
English (standard for factory manuals unless otherwise specified)
Engine:
Detailed coverage of the Boxer twin-cylinder engines, including disassembly, assembly, tuning, and troubleshooting
Fuel System:
Carburetor systems (likely Bing or similar), fuel tank, fuel lines, and pumps
Ignition System:
Ignition timing, spark plugs, coils, and electronic ignition components
Transmission:
Clutch, gearbox, driveshaft, and final drive maintenance and repair
Brakes:
Front and rear brake systems, including hydraulic lines, master cylinders, calipers, and pads
Suspension:
Front forks (telescopic), rear swingarm, shocks, and associated bearings
Electrical System:
Wiring diagrams, battery, charging system (alternator/generator), lighting, starter motor, and instrumentation
Chassis Frame:
Frame integrity, steering head bearings, and general chassis components
Bodywork:
Fenders, fuel tank, seat, fairings (if applicable), and other body panels
Routine Maintenance:
Oil changes, filter replacements, spark plug service, valve adjustments, lubrication points
Troubleshooting:
Diagnostic procedures for common and uncommon issues across all systems
Engine Rebuild:
Complete engine overhaul procedures, including piston ring replacement, bearing services, and cylinder head work
Transmission Repair:
Gearbox disassembly, inspection, and reassembly, including clutch and final drive servicing
Electrical Diagnostics:
Testing and repair of electrical circuits, charging system diagnosis, and lighting system troubleshooting
Brake Overhaul:
Brake caliper rebuild, master cylinder replacement, and brake fluid flushing
Suspension Servicing:
Fork oil changes, seal replacement, and rear shock absorber servicing
Carburetor Tuning:
Detailed procedures for cleaning, adjusting, and synchronizing carburetors for optimal performance
Wheel And Tire Service:
Tire mounting/dismounting, wheel balancing, and spoke tensioning
Depth:
Factory-level detail, suitable for professional mechanics and experienced DIY enthusiasts
Diagnostic Tools:
Covers the use of specialized BMW diagnostic tools and procedures for the era
Torque Specifications:
Comprehensive listing of all critical torque values for fasteners and components
Clearances:
Detailed specifications for all required operating clearances (e.g., valve lash, bearing play)
Format Details:
PDF (Portable Document Format), enabling digital access, printing, and searching
Quality:
High-resolution scans of original factory documentation, ensuring legibility of text and diagrams
Searchability:
Likely OCR (Optical Character Recognition) processed for text searching capabilities within the PDF
Binding:
N/A (Digital PDF format)
Paper:
N/A (Digital PDF format); printing allows user choice of paper type
Engine Type:
Air-cooled, four-stroke Boxer twin-cylinder
Displacement R80:
797.5 cc (approx.)
Displacement R90:
897.9 cc (approx.)
Displacement R100:
979.5 cc (approx.)
Horsepower R80:
~50 hp (varies by specific model/tuning)
Horsepower R90:
~60-65 hp (varies by specific model/tuning)
Horsepower R100:
~65-70 hp (varies by specific model/tuning)
Carburetors:
Typically dual Bing carburetors (e.g., 32mm or 40mm depending on model)
Fuel Type:
Unleaded gasoline (as per era regulations, may require additives for older engines)
Oil Change:
Typically every 5,000-7,500 km or annually
Valve Adjustment:
Every 10,000-15,000 km
Spark Plug Service:
Every 10,000 km
Engine Oil:
SAE 20W-50 or 10W-40 motorcycle-specific oil (refer to manual for exact grades)
Transmission Oil:
API GL-5, SAE 80W-90 gear oil
Final Drive Oil:
API GL-5, SAE 80W-90 gear oil
Brake Fluid:
DOT 3 or DOT 4 hydraulic brake fluid (check manual for specific type)
Oil Leaks:
Common on older Boxer engines at seals and gaskets
Wiring Harness Degradation:
Age-related deterioration of insulation on wiring looms
Carburetor Synchronization:
Requires regular checking and adjustment for smooth running
Clutch Wear:
Disc wear over time, requiring replacement
Bmw Motorcycles:
BMW's long-standing reputation for engineering quality, reliability, and robust Boxer engine design
R Series:
The R80, R90, and R100 series are descendants of BMW's original Boxer motorcycles, representing refined touring and sport-touring capabilities
Manufacturing:
Produced in Berlin, Germany, at BMW's motorcycle factory
Key Models 1983:
R80/7, R80G/S, R80ST, R90/6 (discontinued but manual may cover), R100S, R100CS, R100RT, R100RS
