Target Audience:
Professional BMW motorcycle technicians, experienced DIY mechanics, and enthusiasts seeking in-depth technical knowledge.
Value Proposition:
Provides comprehensive, authoritative repair and maintenance information essential for the long-term care and optimal performance of the BMW R 100 R.
Competitors:
Haynes, Clymer, official BMW service bulletins (less accessible to public).
Download Availability:
Instant download for immediate access.
Professional Focus:
Prepared primarily for professional technicians, ensuring a high level of detail and accuracy.
Years Covered:
1980, 1981, 1982, 1983, 1984
Engine Variants Covered:
R 100 R (1000cc Boxer Twin)
Estimated Page Count:
Likely 300-500 pages (typical for comprehensive service manuals of this era)
Type:
Service Repair Manual
Format:
Digital Download (PDF)
Engine:
Complete overhaul, tuning, component diagnostics, fuel system, ignition system, lubrication, cooling (air-cooled).
Transmission:
Gearbox overhaul, clutch service, shaft drive maintenance, lubrication.
Brakes:
Hydraulic system, caliper service, master cylinder overhaul, pad/disc replacement, bleeding procedures.
Electrical System:
Wiring diagrams, starter system, charging system (alternator, regulator), lighting, instrumentation, ignition system details.
Suspension:
Front fork service (oil change, seal replacement), rear shock absorber maintenance, linkage lubrication.
Chassis And Frame:
Frame inspection, steering head bearing service, wheel bearing maintenance, mounting points.
Fuel System:
Carburetor identification, tuning, jetting, float bowl adjustment, fuel tank and petcock maintenance.
Exhaust System:
Component identification, gasket replacement, exhaust flange torque specifications.
Maintenance:
Scheduled maintenance, oil changes, filter replacements, spark plug service, valve clearance adjustment, lubrication points.
Troubleshooting:
Diagnostic flowcharts, common problem identification, symptom-based solutions.
Repair:
Step-by-step repair instructions for all major components and systems.
Disassembly And Assembly:
Detailed procedures for removing and reinstalling major assemblies and components.
Tune Up:
Engine timing, carburetor synchronization, ignition timing adjustments.
Depth Level:
Comprehensive. Suitable for professional technicians and advanced DIY enthusiasts.
Diagnostic Capability:
Advanced diagnostic procedures, including electrical system troubleshooting and engine performance analysis.
Engine Type:
Air-cooled, four-stroke, boxer-twin cylinder
Displacement:
979 cc (979 cubic centimeters)
Bore X Stroke:
94 mm x 70.8 mm (approximate, verify with manual)
Compression Ratio:
8.2:1 (typical for R100 models, verify)
Valve Train:
Overhead valves, pushrod actuated (OHV)
Horsepower:
Approximately 65-70 hp at 7000 rpm (verify with manual)
Torque:
Approximately 75 Nm at 5500 rpm (verify with manual)
Carburetors:
Dual Bing 32/40/32 or 32/40/33 carburetors (common, verify with manual)
Fuel Type:
Unleaded gasoline, minimum 91 octane (RON+MON/2)
Ignition Type:
Electronic Ignition (Motronic or breaker point depending on exact build date and sub-model)
Oil Type:
SAE 20W-50 or 10W-40 (verify specific viscosity for climate)
Oil Capacity:
Approximately 2.5 liters (including filter, verify with manual)
Oil Filter Type:
Cartridge type, e.g., Mann-Filter W712/19 or equivalent (verify with manual)
Transmission Type:
5-speed manual gearbox
Clutch:
Single dry plate, diaphragm spring
Gear Ratios:
Specific gear ratios will be detailed in the manual.
Gearbox Oil Type:
SAE 75W-90 or 80W-90 GL-5 gear oil (verify with manual)
Gearbox Oil Capacity:
Approximately 0.9 - 1.1 liters (verify with manual)
Wheelbase:
Approximately 1465 mm (57.7 inches, verify with manual)
Dry Weight:
Approximately 207 kg (456 lbs, verify with manual)
Gross Vehicle Weight Rating:
Not applicable for motorcycles in this classification, but payload capacity will be detailed.
Crash Safety Ratings:
N/A (Motorcycle safety assessments differ from automotive and are not typically rated by agencies like NHTSA or Euro NCAP in this era.)
Braking System:
Hydraulically actuated disc brakes front and rear (caliper type and disc diameter will be specified in manual).
Tires:
Recommended tire sizes and pressures will be detailed in the manual (e.g., 100/90-18 front, 130/90-17 rear typical).
Lighting:
Headlight, taillight, brake light, turn signals, license plate light.
Oil Change Interval:
Every 5,000 - 7,500 km or annually (refer to manual for precise BMW recommendation).
Valve Adjustment Interval:
Every 10,000 - 15,000 km (critical for boxer engine performance).
Spark Plug Replacement:
Every 15,000 - 20,000 km (check manual for specific plug type and gap).
Brake Fluid Type:
DOT 4 (verify with manual)
Final Drive Oil Type:
SAE 80W-90 GL-5 gear oil (verify with manual)
Fork Oil Type:
Specific viscosity fork oil (e.g., SAE 15W or 20W, capacity per fork leg detailed in manual)
Common Wear Items:
Clutch wear, steering head bearings, output shaft seal leaks, carb synchronization drift.
Ignition System Quirks:
Early models might have breaker points requiring regular maintenance; later electronic systems are generally more robust.
Cylinder Head Torque:
Specific torque sequence and values for cylinder head studs are vital and will be in the manual.
Wheel Bolt Torque:
Wheel hub nut torque specifications will be listed in the manual.
Brand:
BMW Motorrad, known for engineering excellence, durability, and distinctive boxer engines.
Predecessors:
Successor to models like the R 90 S and R 100 RT, building on the established R-series platform.
R Series Legacy:
The R 100 R is part of the long-running and iconic BMW R-series, characterized by its horizontally opposed twin-cylinder engines.
Production Period:
1980-1984 (for the specific R 100 R model variant covered).
Manufacturing Location:
Berlin, Germany (Spandau Plant)
