Target Audience:
BMW R850C owners, independent motorcycle mechanics, dealerships
Value Proposition:
Provides comprehensive, factory-level repair and maintenance information to empower owners and technicians.
Differentiation:
Covers the specific R850C model, offering detailed technical data often found only in official BMW service bulletins.
Content Focus:
Focuses on practical, hands-on service and repair procedures essential for maintaining the motorcycle.
Diagnostic Emphasis:
Includes detailed troubleshooting sections, crucial for diagnosing complex issues.
Engine Service:
Complete overhaul, tuning, component replacement
Fuel System:
Fuel injection, fuel pump, filters, lines
Ignition System:
Spark plugs, coils, ignition control module
Exhaust System:
Mufflers, catalytic converter, pipes
Transmission:
Gearbox overhaul, clutch, drive shaft, final drive
Brakes:
Brake system servicing, ABS, caliper, master cylinder, fluid flush
Suspension:
Front forks, rear shock absorber, linkages
Steering:
Handlebars, steering head bearings
Electrical System:
Wiring diagrams, battery, alternator, starter, lighting, instrumentation
Chassis And Bodywork:
Frame, body panels, seat, fairings, wheels
Maintenance Procedures:
Routine service, oil changes, filter replacement, chain adjustment (if applicable)
Repair Procedures:
Step-by-step repair instructions for all major components
Troubleshooting Guides:
Diagnostic steps for common and uncommon problems
Torque Specifications:
Critical torque values for all fasteners
Wiring Diagrams:
Detailed electrical schematics
Depth Of Coverage:
Mechanic-level detail, suitable for professional technicians and experienced DIYers
Diagnostic Capability:
Advanced diagnostic procedures and troubleshooting flowcharts
Engine Type:
Air-cooled, four-stroke boxer twin
Bore X Stroke:
90.0 mm x 66.0 mm
Valve Train:
OHV, 2 valves per cylinder
Horsepower Approx:
70 hp (51 kW) @ 7,000 rpm
Torque Approx:
75 Nm (55 lb-ft) @ 5,250 rpm
Fuel Delivery:
Electronic Fuel Injection (BMW's Motronic system, likely)
Fuel Type:
Unleaded gasoline, minimum 91 octane (RON+MON)/2)
Transmission Type:
5-speed manual gearbox
Clutch Type:
Single dry plate, diaphragm spring
Gear Ratios:
Specific ratios detailed in the manual (e.g., 1st: 3.46, 2nd: 2.40, 3rd: 1.73, 4th: 1.38, 5th: 1.16)
Transmission Fluid:
SAE 75W/90 API GL-5 gear oil (BMW recommends specific formulations)
ABS Availability:
Available as an option, likely BMW's Integral ABS
Braking System:
Dual front disc brakes, single rear disc brake
Lighting:
Halogen headlight, LED taillight (common on later models)
Frame Construction:
Steel tube frame for rider safety and stability
Instrumentation:
Analog tachometer, digital speedometer, odometer, trip meter, clock, gear indicator (may vary by specific R850C configuration).
ABS:
Integral ABS (optional), which combines braking functions.
Diagnostic Interface:
Likely uses a proprietary BMW diagnostic connector requiring specific tools or adapters detailed in the manual.
Oil Change Interval:
Typically every 10,000 km (6,000 miles) or annually, whichever comes first (refer to manual for exact intervals).
Valve Clearance Check:
Recommended every 20,000 km (12,000 miles) or as per manual.
Engine Oil Type:
BMW recommends specific synthetic or semi-synthetic oils meeting BMW's specifications (e.g., SAE 15W-50 or 20W-50, consult manual for exact grade and API rating).
Engine Oil Capacity:
Approximately 4.0 liters (4.2 US quarts) with filter change.
Brake Fluid Type:
DOT 4 (refer to manual for specific BMW approval or type).
Common Wear Items:
Clutch wear, rear shock absorber degradation, steering head bearing adjustment/replacement, fuel pump longevity.
Electrical Gremlins:
Occasional issues with wiring harness integrity, particularly around the steering head and under the seat.
Fuel Injection System:
Can sometimes require sensor cleaning or adjustments.
Heritage:
BMW Motorrad, established reputation for engineering excellence and durability in motorcycles.
Series Origin:
Part of BMW's long-standing tradition of boxer-engined motorcycles, building on the R series lineage.
Production Years:
R850 series produced roughly from 1996 to 2007, with the R850C variant being a specific cruiser-style iteration.
