Positioning:
The BMW R100R was positioned as a robust, capable touring and everyday motorcycle in the late 1970s through the 1990s, known for its boxer engine and BMW's engineering quality.
Competitors:
Competed with other European and Japanese motorcycles offering similar displacement and performance, such as Moto Guzzi, Ducati, and larger Japanese multi-cylinder bikes.
Distinctive Features:
Characterized by its air-cooled, horizontally opposed twin-cylinder boxer engine, shaft drive, comfortable ergonomics, and legendary BMW reliability.
Buyer Benefit:
Provides essential, detailed information for owners and mechanics to maintain, diagnose, and repair the BMW R100R, ensuring its longevity and optimal performance.
Applicable Years:
1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996
Type:
Workshop Service Manual / Repair Manual
Primary Language:
English
Engine:
Comprehensive coverage of the air-cooled twin-cylinder boxer engine, including disassembly, assembly, inspection, and adjustment of all internal components.
Fuel System:
Detailed instructions for carburetors (likely Bing 40mm), fuel tank, fuel lines, and related components.
Ignition System:
Information on ignition timing, spark plugs, coils, and electronic ignition components if applicable to later models within the range.
Transmission:
Covered in detail, including clutch operation, gearbox disassembly and assembly, gear ratios, and final drive maintenance.
Brakes:
Service procedures for both front and rear braking systems, likely including drum and/or disc brakes depending on the specific year/variant.
Suspension:
Detailed procedures for front forks (e.g., telescopic forks) and rear shock absorbers, including oil changes and spring adjustments.
Electrical System:
Wiring diagrams, component testing, battery service, lighting system, and charging system (alternator/generator) diagnostics.
Chassis And Bodywork:
Frame inspection, body panel removal and installation, seat, handlebars, and control cables.
Wheels And Tires:
Information on wheel bearings, tire changes, and spoke tensioning if applicable.
Routine Maintenance:
Oil changes, filter replacements, spark plug checks, chain lubrication (if applicable), brake adjustments, and general inspections.
Troubleshooting:
Systematic diagnostic procedures for common problems, including no-start conditions, poor running, and component failures.
Repair Procedures:
Step-by-step instructions for component removal, disassembly, inspection, repair, reassembly, and installation.
Adjustments:
Detailed guidance on adjusting carburetor synchronization, valve clearances, ignition timing, clutch, and brakes.
Technical Specifications:
Includes essential data such as torque values, clearances, fluid capacities, and electrical specifications.
Special Tools:
Identification and usage instructions for specialized tools required for specific repair or adjustment procedures.
Depth Of Information:
Comprehensive, covering everything from basic maintenance to complete engine and transmission overhauls. Offers detailed explanations, pictorial diagrams, and exploded views.
Diagrams And Illustrations:
Includes detailed illustrations, exploded diagrams, drawings, and photos to guide users through service repair procedures.
Torque Specifications:
Provides specific torque values for threaded connections, essential for correct assembly and preventing damage.
Wear Limits:
Includes reference to wear limits for components, allowing for accurate assessment of part condition during maintenance and repair.
Safety Precautions:
Emphasizes safety throughout, with notes, cautions, and warnings for dangerous operations and the importance of using correct tools and procedures.
Digital Readability:
PDF format ensures compatibility with a wide range of devices and operating systems (Windows, Mac, Linux). Readable with Adobe Reader.
Printable:
Yes, all pages are printable, allowing for physical reference during work.
Binding Type Digital:
N/A (Digital PDF)
Paper Type Digital:
N/A (Digital PDF)
Delivery:
Instant Download via secure payment processor.
Completeness And Accuracy:
Described as 100% complete and intact, with detailed step-by-step procedures, pictorial diagrams, and explanations for efficient and accurate repairs.
Engine Type:
Air-cooled, four-stroke, horizontally opposed twin-cylinder boxer
Displacement:
979 cc (approx. 60 cu in)
Bore X Stroke:
94 mm x 70.7 mm (typical for R100 series)
Compression Ratio:
Typically around 9.5:1 or 10.0:1 depending on specific sub-model
Horsepower:
Approximately 65-70 hp at 6500 rpm (typical for R100 series)
Torque:
Approximately 74 Nm (55 lb-ft) at 5000 rpm (typical for R100 series)
Carburetion:
Twin 40mm Bing constant-velocity carburetors
Fuel Type:
Unleaded gasoline (91 octane or higher recommended)
Oil Type:
Mineral or synthetic motorcycle oil, SAE 20W-50 or SAE 10W-40 recommended, depending on climate. Manual will specify exact BMW approval or API ratings.
Oil Capacity:
Approximately 2.5 - 3.0 liters (including filter), manual will confirm precise amount.
Transmission Type:
5-speed constant mesh gearbox
Clutch Type:
Dry, single plate, diaphragm spring
Final Drive:
Shaft drive with enclosed driveshaft
Gear Ratios:
Specific gear ratios will be detailed in the manual, crucial for performance and maintenance checks.
Transmission Oil Type:
Hypoid gear oil, SAE 80W-90 or SAE 75W-90, manual will specify GL-4 or GL-5 rating.
Transmission Oil Capacity:
Approximately 0.5 - 0.7 liters, manual will provide exact specification.
Oil Change Interval:
Typically every 5,000 - 7,500 km (3,000 - 5,000 miles) or annually, manual to confirm.
Valve Adjustment Interval:
Recommended every 10,000 - 15,000 km (6,000 - 10,000 miles), manual to confirm.
Spark Plug Replacement Interval:
Typically every 15,000 - 20,000 km (10,000 - 12,500 miles), manual to confirm.
Engine Oil Grade:
SAE 20W-50 or SAE 10W-40 (as per climate conditions), specific BMW approvals in manual.
Gearbox Oil Grade:
SAE 80W-90 Hypoid Gear Oil (API GL-4 or GL-5 rated)
Brake Fluid Type:
DOT 3 or DOT 4 hydraulic fluid, depending on system specification (manual to confirm).
Common Wear Items:
Typical items for bikes of this age include clutch plates, wheel bearings, fork seals, exhaust system components, and electrical connections.
Carburetor Issues:
Bing carburetors can require periodic adjustment and cleaning; synchronization is critical for smooth running.
Shaft Drive Maintenance:
Regular lubrication of the driveshaft splines and final drive is essential to prevent wear.
Importance Of Adherence:
Adherence to the maintenance schedule outlined in the manual is crucial for maximizing the lifespan and reliability of the R100R.
Bmw Motorcycle Legacy:
BMW has a long-standing history of producing high-quality, reliable motorcycles, particularly known for its boxer engine configuration dating back to the 1920s.
R100 Series Context:
The R100R is part of the evolution of BMW's large-displacement boxer twins, building upon earlier R90S and R100/7 models, often serving as a more stripped-down, 'naked' version compared to the RS (Sport) and RT (Touring) variants.
Production Period:
The R100R model, as covered by this manual, spans a significant production run from 1978 through 1996, encompassing various updates and refinements.
