Model Variants:
R100/7, R100S, R100CS, R100RT, R100RS, R100GS, R100R
Engine Codes:
Type 247 (various configurations)
Target Audience:
BMW motorcycle owners, independent repair shops, aspiring mechanics.
Value Proposition:
Enables owners to perform maintenance and repairs, saving money and extending the life of their classic BMW motorcycle.
Manual Type Comparison:
More comprehensive than owner's manuals, providing in-depth technical procedures for repairs and diagnostics.
Diagrams:
Includes detailed illustrations, exploded views, and diagrams of all major components.
Troubleshooting Charts:
Likely includes systematic troubleshooting flowcharts for common issues.
Wiring Diagrams:
Essential, detailed electrical system wiring schematics.
Part Identification:
May include identification of specific parts and sub-assemblies.
Years Covered:
1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996
Type:
Service and Repair Manual
Format:
PDF (Assumed, common for digital manuals)
Engine:
Comprehensive engine overhaul, including cylinder head removal, piston and ring replacement, valve timing, carburetor tuning, ignition system, lubrication system, cooling (air-cooled).
Transmission:
Gearbox disassembly and assembly, clutch service, drive shaft maintenance, final drive service.
Electrical:
Wiring diagrams, charging system (alternator, rectifier/regulator), ignition system (points, electronic ignition), lighting, starter motor, battery service, instrumentation.
Chassis:
Frame inspection and repair, front forks (suspension, steering head bearings), rear suspension (shock absorbers, swingarm), wheel and tire servicing, brake system overhaul (hydraulic, mechanical), steering system.
Bodywork:
Body panel removal and installation, fuel tank service, seat maintenance, fairings and luggage systems (where applicable).
Maintenance:
Regular servicing, oil changes, filter replacements, spark plug service, brake fluid replacement, tire pressure checks, chain adjustment (if applicable to specific models).
Troubleshooting:
Diagnostic procedures for common running issues, starting problems, electrical faults, braking issues, and suspension performance.
Repair:
Detailed step-by-step repair instructions for all major mechanical and electrical components, including component identification, disassembly, cleaning, inspection, repair, and reassembly.
Specifications:
Torque values for critical fasteners, engine specifications, tuning data, fluid capacities, wear limits.
Depth:
Comprehensive from basic owner maintenance to complete engine and transmission rebuilds, including advanced diagnostic troubleshooting.
Engine Type:
Air-cooled, four-stroke, horizontally opposed twin-cylinder Boxer
Engine Displacement:
979 cc (998 cc for some later models)
Bore X Stroke:
90 mm x 77.6 mm (typical)
Compression Ratio:
Typically 8.4:1 to 9.5:1 depending on model and year
Horsepower:
Approximately 65-70 hp at 6,500 rpm (varies by model)
Torque:
Approximately 75 Nm (55 lb-ft) at 5,000 rpm (varies by model)
Carburetors:
Typically dual Bing constant-velocity carburetors (e.g., 32/36/40mm, depending on model)
Fuel Type:
Unleaded gasoline (91 RON / 87 AKI minimum recommended)
Ignition Type:
Battery ignition with breaker points or electronic ignition (depending on year/model)
Oil Type:
SAE 20W-40 or SAE 20W-50 motorcycle oil meeting API SG or higher classification (manual will specify exact grades)
Oil Capacity:
Approx. 2.5 liters (2.6 US quarts) including filter
Type:
5-speed constant mesh gearbox
Drive:
Shaft drive via driveshaft to rear wheel
Gearbox Options:
N/A (standard 5-speed)
Clutch Type:
Dry, single-plate (manual operation)
Transmission Fluid:
SAE 80W-90 hypoid gear oil for final drive, gearbox oil often shared with engine oil in older configurations or specific oils required (manual will clarify).
Wheelbase:
Approx. 1465 mm (57.7 in) to 1510 mm (59.4 in) depending on model (e.g., GS models longer)
Dry Weight:
Approx. 200 kg (440 lbs) to 230 kg (507 lbs) depending on model (e.g., GS heavier)
Gross Vehicle Weight Rating:
Approx. 400 kg (882 lbs) to 430 kg (948 lbs)
Safety Standards:
Designed to meet relevant motorcycle safety standards of its era.
Braking System:
Hydraulic disc brakes front and rear (specific caliper/disc sizes vary by model), some earlier models may have drum brakes on rear.
Suspension:
Telescopic front forks, dual rear shock absorbers with adjustable preload (specific models like GS had longer travel).
Lighting:
Halogen headlight, taillight, brake light, turn signals.
Oil Change Interval:
Typically every 5,000 km (3,000 miles) or annually, whichever comes first. Manual will provide precise intervals.
Valve Adjustment Interval:
Typically every 10,000 km (6,000 miles). Manual will specify.
Spark Plug Replacement Interval:
Every 10,000 - 20,000 km (6,000 - 12,000 miles), depending on spark plug type.
Brake Fluid Type:
DOT 4 or DOT 5.1 (manual will confirm specific recommendation).
Transmission Oil Type:
Refer to transmission section, often shared with engine oil or specific hypoid gear oil for final drive.
Common Wear Items:
Clutch wear, output shaft seal leaks, rear main seal leaks, swingarm bearings, steering head bearings, aging electrical connectors, carburetor synchronization drift, wear on exhaust baffles.
Specific Model Issues:
Earles fork (early R100/7) seal leaks, '70s era electrical component reliability (can be addressed with upgrades), final drive splines require periodic greasing.
Special Tools:
BMW-specific tools for engine timing, bearing removal, and suspension work will be detailed in the manual.
Bmw Motorcycle History:
BMW has a long and distinguished history in motorcycle manufacturing, known for engineering, reliability, and innovation since the early 20th century.
R100 Development:
The R100 series evolved from the successful R90/6 and R100/7 models, incorporating a larger engine and various chassis and styling updates across its diverse variants.
Key R100 Variants:
R100/7 (standard), R100S (sport), R100CS (Classic Sport), R100RS (Rennsport - fully faired sport-tourer), R100RT (Reise-Tourer - touring), R100GS (Gelände/Straße - dual-sport).
Production Period:
1978-1996 (as per manual coverage, though specific variants had narrower production windows).
Manufacturing Location:
Berlin, Germany (BMW Motorrad plant)
