Segment:
Lightweight Touring Motorcycle
Target Audience:
Owners and independent repair shops looking for detailed technical guidance for the BMW R850R.
Key Differentiators:
Focus on boxer-twin engine platform, BMW's renowned engineering and reliability.
Manual Value Proposition:
Provides essential, in-depth knowledge for maintaining and repairing the R850R, reducing reliance on expensive dealership services.
Engine Systems:
Engine overhaul, fuel injection, ignition system, cooling system, lubrication system, exhaust system, engine management (Motronic)
Transmission Drivetrain Systems:
Gearbox overhaul, clutch, driveshaft, final drive, gearbox oil specifications
Chassis Suspension Systems:
Front forks (Telelever), rear suspension (Paralever), wheel bearing replacement, steering head bearing service
Braking Systems:
ABS system (if equipped), brake caliper overhaul, brake fluid replacement, disc replacement, pad replacement
Electrical Systems:
Wiring diagrams, battery maintenance, alternator, starter motor, lighting system, horn, instrument cluster, ECU diagnosis
Fuel System:
Fuel pump, fuel filter, fuel tank, injectors, fuel pressure regulator
Bodywork Frame:
Fairing removal and installation, seat, luggage systems, frame inspection
Maintenance Procedures:
Oil change, filter replacement, spark plug replacement, air filter cleaning/replacement, valve clearance adjustment, battery checks, brake bleeding
Troubleshooting Procedures:
Diagnostic fault finding, common problems and solutions, error code interpretation
Repair Procedures:
Engine rebuild, gearbox repair, suspension component replacement, electrical component repair, brake system overhaul
Technical Data Specs:
Torque specifications, clearances, fluid capacities, electrical resistance values
Depth:
Comprehensive from basic maintenance to full engine and gearbox rebuilds, including electrical diagnostics and troubleshooting.
Engine Type:
Air-cooled, four-stroke, flat-twin (boxer) engine
Displacement:
848 cc (51.7 cu. in.)
Bore X Stroke:
90.0 mm x 66.0 mm (3.54 in. x 2.60 in.)
Valvetrain:
OHV, 2 valves per cylinder
Horsepower:
70 hp (52 kW) at 6,750 rpm
Torque:
75 Nm (55 lb-ft) at 5,000 rpm
Fuel Delivery:
Bosch Motronic MA 2.4 fuel injection
Fuel Type:
Unleaded gasoline, 91-98 RON
Fuel Tank Capacity:
25 liters (6.6 US gal)
Ignition System:
Electronic Ignition (Motronic)
Idle Speed:
1000 +/- 50 rpm (specified in manual)
Spark Plugs:
NGK CR9EK or equivalent (refer to manual for exact spec)
Valve Clearance Intake:
0.10 - 0.20 mm (Cold, specified in manual)
Valve Clearance Exhaust:
0.20 - 0.30 mm (Cold, specified in manual)
Transmission Type:
5-speed manual gearbox
Clutch Type:
Dry, single-plate clutch
Gear Ratios:
Detailed in manual (e.g., 1st: 3.46, 2nd: 2.44, etc.)
Gearbox Oil Type:
SAE 75W/90 API GL-5 transmission oil (refer to manual for specific BMW recommendations)
Gearbox Oil Capacity:
Approx. 1.2 liters (refer to manual for exact capacity and checking procedure)
Infotainment System:
Basic analog/digital instrument cluster, optional heated grips.
ABS System:
Optional BMW Motorrad ABS system, detailed diagnostics and troubleshooting in the manual.
Connectivity Features:
N/A (No modern connectivity features like Bluetooth or USB ports on this model).
Oil Change Interval:
Every 10,000 km or 12 months (refer to manual for precise recommendation and conditions)
Filter Replacement Interval:
With every oil change (oil filter)
Spark Plug Replacement Interval:
Every 20,000 km (refer to manual for exact specification and gap)
Valve Clearance Check:
Every 10,000 km or 12 months
Brake Fluid Replacement:
Every 2 years
Engine Oil Type:
Synthetic SAE 20W-50 API SG or higher (BMW recommended, refer to manual)
Engine Oil Capacity:
Approx. 3.0 liters (with filter change, refer to manual for exact capacity)
Brake Fluid Type:
DOT 4 brake fluid
Coolant Type:
Not applicable (air-cooled engine)
Common Issues:
Stiff clutch actuation, potential for fuel injector issues, worn steering head bearings, ABS sensor faults (on equipped models), intermittent electrical connections. Manual provides diagnostic steps.
Bmw Motorrad History:
BMW Motorrad has a long-standing reputation for engineering excellence, innovation, and quality in motorcycle manufacturing since the early 20th century.
R Series Heritage:
The R850R is part of BMW's iconic boxer-twin R series, known for its durability, torque, and shaft drive.
R850R Introduction:
The R850R was introduced as a more accessible and slightly less powerful alternative to the R1100R and later R1150R, offering a balance of performance and comfort.
Production Period:
The R850R model line was produced from the mid-1990s into the early 2000s, with the 2001 model year representing a mature iteration of the design.
Brand Awards:
BMW Motorrad consistently receives awards for engineering, build quality, and rider satisfaction across its model range.
Rider Reviews:
The R850R is generally well-regarded for its comfortable ergonomics, smooth boxer-twin power delivery, and BMW's signature build quality, making it a popular choice for touring and everyday riding.
