Segment:
Classic Motorcycle / Touring Motorcycle
Target Audience:
BMW R100 owners, enthusiasts, mechanics, restoration specialists.
Key Competitors:
Moto Guzzi California, Honda Gold Wing (early models), Kawasaki KZ series.
Manual Utility:
Essential for maintaining, troubleshooting, and repairing the BMW R100, preserving its value and performance.
Engine System:
Complete engine overhaul, tuning, troubleshooting, disassembly, reassembly, cooling system, lubrication system.
Fuel System:
Carburetor tuning and rebuild (Dell'Orto, Bing), fuel pump, fuel lines, fuel tank maintenance.
Electrical System:
Wiring diagrams, ignition system, charging system (alternator, rectifier, battery), lighting, starter motor, diagnostic procedures.
Transmission And Drivetrain:
Gearbox disassembly, inspection, repair, clutch assembly, driveshaft, final drive maintenance.
Suspension And Steering:
Front fork (telescopic, leading axle), rear swingarm, shock absorbers, steering head bearings, wheel bearings.
Braking System:
Front and rear brake systems (drum, disc), hydraulic system, bleeding procedures, component replacement.
Body And Frame:
Frame inspection, body panel removal and installation, fairings, seating, fenders.
Maintenance Tasks:
Regular servicing, oil changes, filter replacements, spark plug checks, valve clearance adjustments, chain lubrication and adjustment.
Diagnostic Procedures:
Troubleshooting guides for common performance issues, electrical faults, and mechanical problems.
Repair Procedures:
Step-by-step instructions for component disassembly, repair, and reassembly for all major vehicle systems.
Diagnostics:
Advanced diagnostic techniques, including electrical system testing and engine performance analysis.
Rebuild Instructions:
Comprehensive guides for complete engine rebuilds, transmission overhauls, and suspension component restoration.
Special Tools:
Identification and usage of specialized BMW tools required for specific repair procedures.
Engine Type:
Air-cooled, four-stroke, horizontally opposed boxer-twin
Displacement:
980 cc (approximate for most R100 variants)
Bore X Stroke:
94 mm x 74 mm
Compression Ratio:
Variable by model, typically 8.5:1 to 9.5:1
Horsepower:
Approx. 65-70 hp @ 7250 rpm (depending on variant and tuning)
Torque:
Approx. 74-78 Nm @ 5500 rpm (depending on variant)
Carburetors:
Twin Dell'Orto PHM 38, or Twin Bing 32/40mm (model dependent)
Fuel Type:
Unleaded gasoline (91 RON or higher)
Valve Actuation:
Pushrod-actuated overhead valves (OHV)
Oil Change Interval:
Every 5,000 - 10,000 km (3,000 - 6,000 miles) or annually, depending on usage.
Valve Adjustment Interval:
Every 10,000 km (6,000 miles).
Spark Plug Replacement:
Every 10,000 - 15,000 km (6,000 - 9,000 miles).
Engine Oil Type:
SAE 20W-50 or SAE 15W-50 motorcycle specific oil (mineral or synthetic).
Engine Oil Capacity:
Approx. 2.5 - 3.0 liters (2.6 - 3.2 US quarts) with filter change.
Gearbox Oil Type:
SAE 90 API GL-5 gear oil.
Final Drive Oil Type:
SAE 90 API GL-5 gear oil.
Brake Fluid Type:
DOT 4 (for hydraulic systems).
Common Problems:
Oil leaks (particularly from pushrod tubes and oil pan seals), output shaft seal wear, occasional gearbox synchro issues, starter clutch wear, aging electrical connectors.
Preventative Measures:
Regular gasket replacement, monitoring for leaks, ensuring clean electrical connections, periodic gearbox oil changes.
Manufacturer:
Bayerische Motoren Werke AG (BMW)
Reputation:
Renowned for engineering excellence, durability, and reliability in motorcycles.
Predecessors:
BMW R series, including R75/5, R90/6, R100/7.
Variants:
R100RS (Sport Touring), R100RT (Touring), R100GS (Dual Sport), R100R (Standard Roadster), R100CS (Classic Sport).
Production Period:
1976 - 1996 (R100 series)