🏷️ Basic Information

Make:

BMW

Model:

R850R / R1100R

Product Type:

Workshop Repair Service Manual

👋 Introduction

Market Segment:

Sport-touring / Naked motorcycles, known for their characterful Boxer engines and robust engineering.

Competitors:

Competed against other large-displacement naked bikes and sport-tourers of its era, such as Ducati Monster, Triumph Bonneville, and various Japanese inline-fours.

Engine Layout:

Air-cooled, four-stroke, flat-twin (Boxer) engine.

Drivetrain Type:

Shaft drive, a signature BMW feature offering low maintenance.

Suspension Design:

Innovative Telelever front suspension for consistent front wheel geometry and Paralever rear for improved drive stability.

ABS:

Optional Integral ABS (Anti-lock Braking System) on many models, enhancing safety.

📋 Manual Details

Vehicles Covered:

BMW R850R and R1100R motorcycles

Estimated Page Count:

Approximately 300-500 pages (typical for this type of manual)

Type:

Workshop Service and Repair Manual

Language:

English (Standard for this product listing)

Format:

Digital (PDF) and potentially Printed

📖 Manual Coverage

Engine:

Complete engine teardown, assembly, diagnosis, and tuning for both R850R and R1100R variants.

Fuel System:

Fuel injection system (Bosch Motronic), fuel pump, injectors, throttle bodies, fuel tank, and lines.

Ignition System:

Ignition coils, spark plugs, ECU control, and troubleshooting.

Transmission:

Gearbox (5-speed for R850R, 6-speed for R1100R), clutch operation, lubrication, and internal components.

Drivetrain:

Shaft drive system, universal joints, final drive unit, and bearings.

Suspension:

Front Telelever and Paralever rear suspension systems, fork seals, shock absorbers, and adjustment procedures.

Brakes:

Front and rear brake systems, ABS (optional on some models), brake calipers, master cylinders, brake fluid replacement, and bleeding procedures.

Electrical System:

Wiring diagrams, battery, charging system (alternator, regulator), starter motor, lighting, instrumentation, and ECU diagnostics.

Bodywork And Chassis:

Frame inspection, fairings, seat removal, fuel tank removal, and general bodywork maintenance.

Scheduled Maintenance:

Detailed service schedules, oil change intervals, filter replacements, spark plug replacement, and valve clearance checks.

Troubleshooting:

Common faults, diagnostic flowcharts, and step-by-step troubleshooting for electrical and mechanical issues.

Repair Procedures:

Step-by-step instructions for component removal, installation, overhaul, and repair for all major systems.

Technical Specifications:

Torque values, clearances, fluid capacities, specifications for all components.

Diagnostic Procedures:

Guidance on using diagnostic tools (if applicable) and interpreting fault codes.

Depth:

Comprehensive; covers basic maintenance to complete engine and gearbox rebuilds, including electrical system diagnostics.

📊 Manual Specifications

Digital Format:

PDF (typically, often searchable and printable)

Print Quality:

High resolution, clear diagrams and text (if printed version)

Binding:

Comb-bound, spiral-bound, or perfect-bound (if printed version, designed for workshop use)

Paper Type:

Durable, often glossy or coated paper to withstand workshop conditions (if printed version)

⚙️ Engine Specifications

R850R Engine Type:

Air-cooled, four-stroke, flat-twin Boxer engine

R850R Displacement:

848 cc (84.8 x 77 mm bore/stroke)

R850R Compression Ratio:

9.2:1

R850R Power Output:

Approx. 70 hp (51 kW) @ 6,500 rpm

R850R Torque:

Approx. 75 Nm (55 lb-ft) @ 4,750 rpm

R1100R Engine Type:

Air-cooled, four-stroke, flat-twin Boxer engine

R1100R Displacement:

1085 cc (99 x 70.5 mm bore/stroke)

R1100R Compression Ratio:

9.7:1

R1100R Power Output:

Approx. 90 hp (66 kW) @ 6,750 rpm

R1100R Torque:

Approx. 95 Nm (70 lb-ft) @ 5,250 rpm

Valve Train:

2 valves per cylinder, operated by pushrods and rocker arms (OHV).

Fuel Delivery:

Bosch Motronic electronic fuel injection (EFI) with sequential fuel injection.

Fuel Type:

Unleaded gasoline, minimum 95 RON (Octane rating may vary by region).

Fuel Tank Capacity:

Approximately 21 liters (5.5 US gal), including reserve.

Oil System:

Wet sump lubrication with oil cooler (R1100R often has a more prominent cooler).

🔧 Transmission

Transmission Type:

Constant-mesh 5-speed (R850R) or 6-speed (R1100R) gearbox.

Optional Gearbox:

N/A for these models; gearbox variations were internal to R1100R for specific market needs sometimes, but primarily 6-speed.

Clutch Type:

Single dry plate clutch, diaphragm spring operation.

Final Drive:

Shaft drive via single-sided swingarm.

📐 Dimensions

Wheelbase:

Approximately 1470 mm (57.9 in) for R850R and R1100R.

Seat Height:

Adjustable, typically around 760-800 mm (30-31.5 in).

Dry Weight:

R850R: Approx. 210 kg (463 lbs); R1100R: Approx. 220 kg (485 lbs).

Gross Vehicle Weight Rating:

Typically around 420 kg (926 lbs).

🛡️ Safety Features

Crash Test Data:

Motorcycle safety ratings are not typically standardized like automotive. Focus is on rider aids and engineering.

ABS:

Optional BMW Integral ABS (anti-lock braking system), often with linked braking.

Braking System Type:

Dual disc front brakes, single disc rear brake.

Lighting:

Halogen headlight, integrated turn signals, brake/tail light.

💡 Technology Features

Infotainment System:

Not applicable; these models pre-date integrated infotainment systems. Rider information is via analog/digital instruments.

ABS:

Integral ABS option provides anti-lock braking for enhanced safety.

Connectivity Features:

N/A.

🔧 Maintenance

Oil Change Interval:

Typically every 10,000 km (6,000 miles) or annually, whichever comes first.

Valve Clearance Check:

Typically every 20,000 km (12,000 miles).

Spark Plug Replacement:

Typically every 20,000 km (12,000 miles), depending on type.

Engine Oil Type:

API SG/SH or higher, SAE 10W-40 or 20W-50 (check manual for specific ambient temperature recommendations).

Engine Oil Capacity:

Approx. 3.0 liters (3.2 US quarts) without filter change, 3.2 liters (3.4 US quarts) with filter change.

Gearbox Oil Type:

SAE 75W-90 GL-5 gear oil.

Gearbox Oil Capacity:

Approx. 0.8 liters (0.85 US quarts).

Final Drive Oil Type:

SAE 75W-90 GL-5 gear oil.

Final Drive Oil Capacity:

Approx. 0.18 liters (0.19 US quarts).

Brake Fluid Type:

DOT 4 brake fluid (check manual for specific ABS compatibility).

Common Problems:

Potential issues include fuel pump reliability, alternator brush wear, ABS sensor issues, and occasional clutch slave cylinder leaks. Regular maintenance is key.

Wheel Bolt Torque:

Typically 60-80 Nm (44-59 lb-ft) for wheels; check manual for specifics.

📚 Vehicle History

Bmw Motorrad:

BMW Motorrad has a long history of producing innovative and durable motorcycles, particularly known for its Boxer engine and shaft drive configurations since the 1920s.

R Series Development:

The R1100R and R850R are part of BMW's 'modern' Boxer era, evolving from the R100 series, introducing fuel injection, new suspension designs (Telelever/Paralever), and monoshocks.

Production Years:

R1100R: Approx. 1994-2001. R850R: Approx. 1996-2006.

Manufacturing Location:

Berlin, Germany (BMW Motorrad plant).

🏆 Awards & Recognition

Industry Awards:

While specific awards for these models are not widely documented, they were highly regarded within their segment for build quality, performance, and innovative engineering features like Telelever/Paralever.