Target Audience:
BMW motorcycle owners (R80GS, R100R) undertaking DIY maintenance and repairs, independent workshops.
Value Proposition:
Provides complete, detailed, and easy-to-follow instructions with illustrations, enabling cost savings on repairs and empowering owners with DIY capabilities.
Illustrations:
Detailed illustrations, exploded diagrams, and photos are included to guide users through repair procedures.
Completeness:
100% complete and intact, covering all models and engines within the specified year ranges.
Accessibility:
Instant download, accessible on multiple devices, printable for workshop use.
Model Years Covered:
1987-1994 (R80GS), 1991-1996 (R100R)
Engine Variants Covered:
All R80GS and R100R engine variants
Estimated Page Count:
Comprehensive (Specific count not provided, but described as '100 percent complete and intact')
Type:
Workshop Repair Service Manual
Language:
English (Implied by product description)
Accessibility:
Viewable on any computer, viewable on iOS, BB, Android. Printable.
Engine Mechanical:
Complete overhaul, component inspection, torque specifications, timing, valve adjustments, piston/cylinder assembly, crankshaft and connecting rod service.
Fuel System:
Carburetor service, cleaning, adjustment, fuel tank, fuel pump, fuel lines, fuel filter replacement.
Ignition System:
Spark plugs, ignition coils, timing adjustments, electronic ignition components.
Drivetrain:
Clutch operation and adjustment, transmission disassembly and reassembly, final drive inspection and service.
Suspension:
Front fork service (seals, oil, springs), rear shock absorber service and adjustment, swingarm and Paralever/Monolever linkage inspection.
Brakes:
Front and rear brake system service (master cylinder, calipers, pads, lines), brake fluid replacement and bleeding procedures.
Electrical System:
Wiring diagrams, battery maintenance, charging system (alternator/generator, regulator), lighting system, starter motor, horn, instrument panel.
Chassis And Bodywork:
Frame inspection, seat, fuel tank removal and installation, fairings (if applicable), fenders, handlebars, controls.
Exhaust System:
Inspection, removal, installation, and common repair aspects of the exhaust headers and mufflers.
Cooling System:
Air-cooled engines; focus on cylinder head and fin cleanliness for optimal heat dissipation.
Routine Maintenance:
Oil changes, filter replacements, chain adjustment (if applicable), lubrication points, tire pressure checks.
Troubleshooting:
Diagnostic guides for common problems, symptom-based troubleshooting charts.
Repair Procedures:
Detailed step-by-step instructions for all major and minor repairs.
Component Rebuilds:
Engine component rebuilds, transmission overhaul, brake caliper rebuilds.
Diagnostic Procedures:
Includes guides for diagnosing engine performance issues, electrical faults, and chassis problems.
Depth:
Comprehensive from basic maintenance to full engine and transmission rebuilds, covering all aspects of repair and service (A-Z).
Diagram Types:
Exploded diagrams, wiring diagrams, torque charts, technical drawings.
Engine Type R80Gs:
BMW Airhead Boxer Twin, 2-cylinder, 4-stroke, horizontally opposed
Engine Displacement R80Gs:
797.5 cc (approx. 800cc)
Engine Type R100R:
BMW Airhead Boxer Twin, 2-cylinder, 4-stroke, horizontally opposed
Engine Displacement R100R:
979 cc (approx. 1000cc)
R80Gs Horsepower:
Approximately 50 hp (varies by specific model year/tuning)
R100R Horsepower:
Approximately 65 hp (varies by specific model year/tuning)
Fuel Delivery:
Dual carburetors (typically Bing 32mm for R80GS, Bing 40mm for R100R)
Fuel Type:
Unleaded gasoline (manual will specify octane rating requirements)
Crash Test Ratings:
Not applicable to motorcycles in the same way as automobiles.
Braking System:
Disc brakes front and rear (single disc front, single disc rear for most R80GS models; dual disc front, single disc rear for R100R).
Suspension Stability:
Paralever (R80GS) and Monolever (R100R) rear suspension systems designed for stability.
Frame Construction:
Steel tube frame for structural integrity.
Oil Change Interval:
Typically every 5,000-10,000 km or annually (manual will provide precise intervals).
Valve Adjustment Interval:
Typically every 10,000-20,000 km (manual will detail specific intervals).
Spark Plug Replacement:
Varies, but often checked/replaced at major service intervals (manual will specify).
Engine Oil Type:
SAE 20W-50 or SAE 15W-50 motorcycle-specific oil recommended (e.g., Castrol GTX 20W-50, Mobil 1 15W-50 - manual will confirm specific BMW approvals).
Engine Oil Capacity:
Approx. 2.5-3.0 liters (manual will provide exact capacity for dry fill and oil change).
Brake Fluid Type:
DOT 4 brake fluid recommended (manual will specify precise type and change intervals).
Final Drive Oil Type:
Hypoid gear oil SAE 80W/90 (manual will confirm).
Gearbox Oil Type:
Gearbox oil SAE 75W/90 or similar (manual will specify approved types).
Common Wear Items:
Clutch wear, aging electrical connectors, fork seal leaks, exhaust system corrosion, starter motor brushes.
Airhead Specifics:
Potential for oil leaks around cylinder base gaskets and pushrod tubes, need for regular valve and timing adjustments to maintain smooth running.
Bmw Motorrad:
Longstanding reputation for engineering excellence, durability, and rider comfort, particularly with their boxer twin engines.
R80Gs Lineage:
Descendant of the original R80G/S, a pioneering dual-sport motorcycle. The R80GS (1987-1996) featured the improved Paralever single-sided swingarm rear suspension.
R100R Lineage:
Part of the 'Airhead' boxer range, the R100R was a more road-oriented machine featuring the Monolever single-sided swingarm, building on the legacy of models like the R100RT and R100RS.
R80Gs Production Years:
1987-1996 (as specified in manual, though market presence might extend slightly beyond)
R100R Production Years:
1991-1996 (as specified in manual)
