Market Niche:
Entry-level to mid-range touring/sport-touring motorcycle within the BMW lineup, known for its accessible power and predictable handling.
Competitors:
Competed with motorcycles like the Honda NT650/NT700 Deauville, Moto Guzzi California models, and other mid-sized European tourers of the era.
Design Philosophy:
Emphasized comfort, practicality, and the signature BMW Boxer engine experience in a more manageable package than larger R-series models.
Target Audience:
Riders seeking a reliable, comfortable touring machine with the character of a BMW Boxer, suitable for both commuting and longer journeys.
General Coverage:
Comprehensive service and repair instructions for BMW R850R 1994 model.
Specific Systems Covered:
Engine, transmission, drivetrain, brakes, suspension, electrical system, fuel system, exhaust, chassis, bodywork.
Estimated Page Count:
Likely 300-500 pages (typical for comprehensive workshop manuals of this era).
Type:
Service Repair Workshop Manual
Format:
Digital (PDF) or Printed
Engine:
Detailed breakdown of the R850cc Boxer engine, including top end, bottom end, valve train, cooling system, lubrication.
Fuel System:
Fuel injection system (Bosch Motronic), fuel pump, injectors, throttle body, fuel tank, lines.
Ignition System:
Ignition coils, spark plugs, ECU control, timing.
Transmission:
5-speed gearbox overhaul, clutch assembly, drive shaft, final drive.
Brakes:
Front and rear disc brake systems, ABS (if equipped), brake lines, calipers, master cylinders.
Suspension:
Front telescopic forks (BMW Telelever or conventional), rear Monolever swingarm, shock absorbers, bearings.
Electrical System:
Wiring diagrams, battery, alternator, starter motor, lighting, instrumentation, fuses, relays, ECU.
Chassis And Bodywork:
Frame inspection, fairings, seat, handlebars, controls, stands.
Routine Maintenance:
Oil changes, filter replacements, spark plug checks, air filter service, brake fluid changes, chain adjustment (if applicable, though R850R has shaft drive).
Engine Repair:
Top-end rebuild, piston/ring replacement, cylinder head service, crankshaft inspection, oil seal replacement.
Transmission Repair:
Gearbox disassembly and reassembly, clutch replacement, final drive spline lubrication.
Suspension And Steering:
Fork seal replacement, shock absorber servicing, steering head bearing replacement.
Brake System Service:
Brake pad replacement, caliper servicing, master cylinder rebuild, brake line replacement, ABS bleeding procedures.
Electrical Diagnostics:
Troubleshooting wiring faults, sensor testing, starter/charging system diagnostics.
Fuel System Diagnostics:
Fuel pressure testing, injector testing, idle control valve service.
Depth:
Comprehensive, covering everything from basic maintenance to full engine and transmission rebuilds, including diagnostic procedures and specifications.
Engine Type:
Air-cooled, four-stroke Boxer-twin
Displacement:
849 cc (849 cubic centimeters)
Bore X Stroke:
90.0 mm x 66.0 mm (typical for R850 series)
Compression Ratio:
9.2:1 (typical)
Horsepower:
Approx. 70 hp (51 kW) at 7250 rpm (specifications may vary slightly by market and model year updates).
Torque:
Approx. 76 Nm (56 lb-ft) at 5000 rpm (typical).
Fuel Delivery:
Bosch Motronic Electronic Fuel Injection (EFI)
Fuel Type:
Unleaded gasoline, minimum 95 RON (Octane rating)
Oil Type:
SAE 20W-50 or 10W-40 motorcycle-specific engine oil meeting API SG or higher specification.
Oil Capacity:
Approx. 3.0 liters (3.2 US quarts) with oil filter change.
Type:
5-speed manual gearbox
Final Drive:
Shaft drive, enclosed, with universal joint
Clutch:
Single dry plate, hydraulically operated
Gearbox Oil Type:
Hypoid gear oil, SAE 80W/90 API GL-5 (for final drive).
Gearbox Oil Capacity:
Approx. 200 ml (0.21 US quarts) for final drive.
Length:
Approx. 2,200 mm (86.6 inches)
Width:
Approx. 930 mm (36.6 inches) at handlebars
Height:
Approx. 1,350 mm (53.1 inches) to top of windscreen
Dry Weight:
Approx. 214 kg (472 lbs)
Gross Vehicle Weight Rating:
Approx. 440 kg (970 lbs)
Fuel Tank Capacity:
Approx. 20 liters (5.3 US gallons), including 3 liters reserve.
Features:
Basic instrumentation with speedometer, tachometer, odometer, trip meters, fuel gauge, and warning lights. No integrated infotainment system as per modern standards.
ABS:
Optional ABS II anti-lock braking system, a significant safety feature for its time.
Features:
No electronic connectivity features.
Oil Change Interval:
Every 10,000 km (6,000 miles) or annually, whichever comes first.
Major Service Interval:
Major inspections and valve clearance adjustments typically every 20,000 km (12,000 miles).
Brake Fluid Change:
Every 2 years, regardless of mileage.
Engine Oil Spec:
SAE 20W-50 API SG or higher.
Coolant Spec:
Not applicable (air-cooled engine).
Common Wear Items:
Clutch slave cylinder seal, swingarm pivot bearings, steering head bearings, final drive splines (requiring regular lubrication).
Electrical Quirks:
Occasional issues with stand switches or rectifier failure (less common on this specific model than earlier ones).
Engine Notes:
Known for longevity and reliability if maintained; check for oil leaks around the base gasket and rear main seal on higher mileage units.
Brand Legacy:
BMW Motorrad, established in 1923, renowned for Boxer engines, shaft drive, and touring motorcycles.
R Series Lineage:
The R850R is part of the long-standing R-series Boxer family, positioned as a more accessible variant of the R100/R1100/R1150 series.
Production Period:
The R850R was produced from 1994 to 2006.
Manufacturing Location:
Berlin, Germany (BMW Motorrad plant)
