Segment:
Large-displacement adventure touring motorcycle.
Target Audience:
Touring riders, adventure enthusiasts, and owners seeking in-depth maintenance and repair knowledge.
Competitors:
Honda Africa Twin, Triumph Tiger, KTM Adventure models.
Design Philosophy:
Versatile machine capable of both long-distance touring and off-road exploration, characterized by its boxer engine and robust construction.
Manual Value Proposition:
Provides authoritative, factory-level information that empowers owners to perform a wide range of maintenance and repairs, saving time and money on dealership services.
Engine:
Detailed procedures for the R21 Boxer engine, including disassembly, reassembly, component inspection, timing, valve adjustment, and performance tuning.
Transmission:
Coverage of the 5-speed gearbox, clutch system (single dry plate), driveshaft, and final drive unit, including inspection, adjustment, and repair.
Fuel System:
Comprehensive details on the fuel injection system (Bosch Motronic MA 2.4), fuel pump, injectors, throttle body, and fuel tank servicing.
Electrical System:
Wiring diagrams, troubleshooting guides for the ignition system, lighting, starter, alternator, battery, ABS II (optional), and instrument cluster.
Suspension:
Detailed procedures for the Telelever front suspension and Paralever rear suspension, including fork seal replacement, shock absorber servicing, and adjustment.
Brakes:
In-depth coverage of the hydraulic brake system, including disc replacement, pad servicing, caliper repair, brake fluid flushing, and ABS II system diagnostics (if applicable).
Chassis And Bodywork:
Information on frame inspection, body panel removal and installation, seat servicing, luggage system mounting, and general chassis components.
Routine Maintenance:
Oil changes, filter replacements (oil, air), spark plug servicing, brake fluid changes, coolant checks, clutch adjustment, and lubrication points.
Troubleshooting:
Diagnostic flowcharts and symptom-based troubleshooting for common issues related to engine performance, electrical systems, and starting problems.
Major Repairs:
Engine rebuild procedures, transmission overhauls, suspension component replacements, and electrical system diagnostics.
Technical Specifications:
Torque specifications, clearances, fluid capacities, electrical resistance values, and other critical data for all components.
Depth:
Extremely detailed, covering everything from basic owner maintenance to complete engine and transmission overhauls, suitable for professional technicians and experienced DIY mechanics.
Engine Type:
Air-cooled, four-stroke, two-cylinder boxer engine.
Displacement:
1130 cc (1.13 Liters)
Bore X Stroke:
98 mm x 73 mm
Valve Train:
Overhead camshaft (SOHC), 2 valves per cylinder.
Horsepower:
95 hp @ 7250 rpm
Torque:
100 Nm (73.8 lb-ft) @ 5500 rpm
Fuel Delivery:
Bosch Motronic MA 2.4 Electronic Fuel Injection (EFI).
Fuel Type:
Unleaded premium gasoline (95 RON minimum recommended).
Oil Type:
SAE 20W-50 motorcycle oil API SG or higher.
Oil Capacity:
4.0 Liters (4.2 US quarts) with filter change.
Gearbox:
5-speed constant mesh sequential gearbox.
Clutch:
Single dry plate clutch, hydraulically operated.
Final Drive:
Shaft drive via driveshaft and single universal joint to the rear wheel hub.
Gear Ratios:
1st: 3.083, 2nd: 2.032, 3rd: 1.524, 4th: 1.257, 5th: 1.040
Final Drive Ratio:
31:11 (2.818:1)
Transmission Oil:
SAE 75W-90 API GL-5 (or equivalent).
Transmission Oil Capacity:
0.2 Liters (0.21 US quarts)
Length:
Approx. 2230 mm (87.8 in)
Width Over Handlebars:
Approx. 925 mm (36.4 in)
Height Over Seat:
Approx. 1305 mm (51.4 in)
Wheelbase:
Approx. 1494 mm (58.8 in)
Dry Weight:
Approx. 232 kg (511.5 lbs)
Gross Vehicle Weight Rating:
Approx. 445 kg (981 lbs)
Fuel Tank Capacity:
20 Liters (5.3 US gallons), including 3.5 Liters (0.9 US gallons) reserve.
Seat Height:
Adjustable, typically 840 mm or 860 mm (33.1 in or 33.9 in)
ABS:
Optional Integral ABS II (Anti-lock Braking System).
Braking System:
Dual 305 mm discs with 4-piston calipers (front), Single 276 mm disc with 2-piston caliper (rear).
Lighting:
Halogen headlight, LED taillight, amber turn signals.
Chassis Strength:
Steel tube frame providing robust support.
Ergonomics:
Designed for rider comfort and control during long-distance travel and varied terrain.
Instrument Cluster:
Analog tachometer, digital speedometer, fuel gauge, gear indicator, clock, odometer, trip meters, and warning lights.
ABS:
Integral ABS II available as an option on many models, offering enhanced braking control.
Power Outlet:
12V accessory power socket often present for charging devices.
Oil Change:
Every 10,000 km (6,000 miles) or annually.
Air Filter Check:
Every 10,000 km (6,000 miles), replace as needed.
Spark Plug Replacement:
Every 20,000 km (12,000 miles).
Valve Adjustment:
Every 20,000 km (12,000 miles).
Brake Fluid Flush:
Every 2 years.
Coolant:
BMW approved coolant (ethylene glycol-based) with corrosion inhibitor. Ratio 50/50 with distilled water.
Brake Fluid:
DOT 4 hydraulic brake fluid.
Final Drive Oil:
SAE 75W-90 API GL-5 (or equivalent).
Clutch Slave Cylinder:
Potential for leaks or failure, often requiring replacement.
Alternator Output:
Some models may experience reduced charging output over time, requiring inspection and potential replacement of the alternator or regulator.
Fuel Pump Reliability:
Occasional reports of fuel pump failure, particularly on higher mileage units.
Paralever Pin Wear:
Wear in the paralever pivot points can lead to clunking noises or instability.
