Target Audience:
Owners of BMW R80GS and R100R motorcycles seeking to perform maintenance, repairs, and diagnostics.
Value Proposition:
Provides essential technical information equivalent to what dealership technicians use, enabling cost-effective self-maintenance and repair.
Detail Level:
Extremely detailed, step-by-step instructions with numerous diagrams and pictures.
Original Source:
Represents the same information used by certified BMW technicians.
Accessibility:
Instant download format allows immediate access to repair information.
Primary Coverage:
Maintenance, Service, Diagnosis, Repair
Estimated Page Count:
High (typically 300+ pages for comprehensive manuals of this type)
Manual Type:
Workshop Service Manual / Repair Manual
Operating Systems:
Windows, MacOS
Engine:
Detailed coverage of the BMW boxer twin-cylinder engine, including disassembly, assembly, tuning, and troubleshooting.
Transmission:
Service and repair procedures for the gearbox, clutch, and driveshaft.
Chassis:
Information on frame, suspension (front fork, rear shock absorber/swingarm), steering system.
Brakes:
Maintenance and repair of the braking system, including caliper, master cylinder, lines, and bleeding procedures.
Electrical System:
Wiring diagrams, troubleshooting of ignition, lighting, charging system (alternator, regulator), and starter motor.
Fuel System:
Carburetor maintenance, adjustment, and overhaul (e.g., Bing carburetors), fuel tank, and fuel lines.
Exhaust System:
Details on exhaust components and servicing.
Wheels Tires:
Wheel bearing service, spoke tensioning, and tire information.
Routine Maintenance:
Oil changes, filter replacements, spark plug service, chain adjustment (if applicable to specific model variants), valve clearance checks and adjustments.
Troubleshooting:
Diagnostic flowcharts and symptom-based troubleshooting for common issues.
Repair Procedures:
Step-by-step instructions for component removal, inspection, repair, and reassembly.
Overhaul:
Comprehensive engine and transmission overhaul instructions.
Special Tools:
Identification and usage of specialized tools required for specific procedures.
Depth:
Dealer-level technical information, suitable for experienced mechanics and serious DIY enthusiasts.
Diagnostics:
Advanced diagnostic procedures and troubleshooting guides.
Torque Specs:
Detailed torque specifications for all critical fasteners.
Engine Type:
Air-cooled, four-stroke, boxer twin-cylinder engine.
R80Gs Displacement:
797.5 cc (approx.)
R100R Displacement:
980 cc (approx.)
R80Gs Horsepower:
Approximately 50 hp (varies by year and specific model variant).
R100R Horsepower:
Approximately 65 hp (varies by year and specific model variant).
Torque Delivery:
Characterized by strong low-end and mid-range torque, typical of boxer engines.
Carburetors:
Typically equipped with dual Bing carburetors (e.g., Bing 32/40mm depending on model and year).
Fuel Type:
Unleaded gasoline (check manual for octane rating recommendations).
Safety Standards:
Designed to meet safety standards of their respective production eras. Manual covers safe operating procedures.
Braking System:
Disc brakes front and rear (rotor size and caliper type vary by model and year). ABS was not standard on these models.
Lighting:
Standard headlight, taillight, brake lights, and turn signals. Manual details electrical system for these.
Oil Change Interval:
Typically every 5,000 - 10,000 km or annually (refer to manual for specific recommendations).
Valve Clearance Check:
Typically every 10,000 km.
Spark Plug Replacement:
Check at regular intervals, replace as needed (e.g., 10,000-20,000 km).
Engine Oil:
Viscosity typically 20W-40 or 20W-50 (API SE/SF or higher). Manual will specify exact grade and API rating.
Gearbox Oil:
Hypoid gear oil, API GL-5, SAE 75W/90 or 80W/90.
Final Drive Oil:
Hypoid gear oil, API GL-5, SAE 75W/90 or 80W/90.
Brake Fluid:
DOT 3 or DOT 4 (check manual for specific caliper requirements).
Common Wear Items:
Valve stem seals, clutch wear, fork seal leaks, carburation adjustments, drive shaft U-joints (older models).
Electrical Gremlins:
As with many bikes of this era, occasional issues with wiring harness integrity or component failure can occur, addressed by manual's troubleshooting.
Bmw Motorrad Legacy:
BMW Motorrad has a long history of producing durable and innovative motorcycles, particularly known for its boxer engines and shaft drive.
R80Gs Development:
The R80GS, introduced in 1980, was the first 'adventure' or 'dual-sport' motorcycle from BMW, based on the R80G/S model, and revolutionized the segment.
R100R Development:
The R100R (introduced 1991) represented a more road-oriented evolution, building on the boxer platform with updated styling and components.
Production Years:
R80GS: circa 1980-1987. R100R: circa 1991-1995. Manual likely covers a range of these years.
Motorcycle Segment:
The R80GS, in particular, is widely recognized as a pioneer and benchmark in the adventure touring motorcycle segment.
Reliability:
Known for robust construction and reliability when properly maintained, as detailed in the service manual.
Manual Endorsement:
Endorsed as the professional-grade documentation used by dealership technicians.
