🏷️ Basic Information

Make:

BMW

Model:

R80GS / R100R

Model Generations:

Paralever models

Model Code R80Gs:

R80G/S / R80GS (depending on specific variant and market)

Model Code R100R:

R100R

👋 Introduction

Target Audience:

Both do-it-yourself enthusiasts and experienced professional mechanics working on BMW R80GS and R100R motorcycles.

Motorcycle Segment:

Dual-sport/Adventure (R80GS), Roadster/Classic Motorcycle (R100R).

Value Proposition:

An inexpensive yet comprehensive resource for maintaining, troubleshooting, and repairing these iconic BMW motorcycles, saving money on labor costs and ensuring longevity.

Key Features:

Easy-to-read text, top-quality diagrams, step-by-step instructions, exploded views, instant download, comprehensive coverage of all systems.

📋 Manual Details

Applicable Years:

1978-1996

Covered Models:

BMW R80GS, BMW R100R

Estimated Page Count:

Varies by specific publication, typically 300-600+ pages for a comprehensive factory manual.

Manual Classification:

Factory Service/Repair/Workshop Manual

Language:

English

Digital Format:

PDF

📖 Manual Coverage

Engine Systems:

Engine disassembly/assembly, cylinder head, valves, crankshaft, pistons, cylinders, lubrication system, cooling system (oil cooling), fuel system (carburetor and fuel injection variants if applicable), intake and exhaust systems.

Drivetrain Systems:

Clutch, transmission (gearbox), final drive (shaft drive), gearbox internals, shift linkage, driveshaft, universal joints.

Chassis Systems:

Frame, body panels, subframe, suspension (front forks and rear Monolever/Paralever swingarm), steering head bearings, wheels, tires, brakes (hydraulic drum and disc), electrical system, battery, charging system (alternator, starter clutch), ignition system, lighting, instrumentation, switches, wiring diagrams.

Electrical System Details:

Alternator, regulator, battery, starter motor, ignition coil, spark plug, lighting circuits (headlight, taillight, turn signals), horn, instrumentation illumination, switchgear diagnostics, and detailed wiring diagrams.

Maintenance Procedures:

Scheduled maintenance, lubrication intervals, fluid changes (engine oil, transmission oil, final drive oil), filter replacements, spark plug service, brake bleeding, cable adjustments, valve clearance adjustment, bearing lubrication.

Repair Procedures:

Complete engine rebuilds, gearbox overhaul, suspension component replacement, brake caliper servicing, electrical component diagnostics and repair, bodywork repair and alignment, starter motor and alternator repair.

Diagnostic Procedures:

Troubleshooting guides for common faults, electrical system diagnostics, engine performance issues, transmission problems.

Suspension Overhaul:

Detailed procedures for fork seal replacement, fork oil changes, shock absorber inspection and replacement, swingarm bearing maintenance, and final drive unit servicing.

Depth Of Coverage:

Comprehensive, covering everything from basic routine maintenance to complete mechanical and electrical overhauls. Includes detailed exploded views and step-by-step instructions for disassembly and reassembly of all major components.

Torques And Clearances:

Includes critical torque specifications for engine, transmission, chassis, and suspension fasteners, as well as precise valve clearance settings and other critical measurements.

📊 Manual Specifications

File Type:

PDF (Portable Document Format)

Compatibility:

All versions of Windows & Mac

Searchability:

PDF format allows for text searching within the document, greatly enhancing efficiency in finding specific information.

Printability:

All pages are printable for easy workshop use.

Binding Description:

Digital format (no physical binding). Instant download saves on postage and packaging.

Digital Paper Equivalent:

High-resolution digital pages with clear text and high-quality diagrams, mimicking printed manual quality.

Reader Software:

Adobe PDF Reader

Archiving Software:

WinZip or equivalent archiving utility required for decompression.

⚙️ Engine Specifications

Engine Type:

Air-cooled, four-stroke, horizontally opposed twin-cylinder (Boxer)

Engine Displacement R80Gs:

Approximately 798 cc (for R80GS variants)

Engine Displacement R100R:

Approximately 980 cc (for R100R variants)

Horsepower R80Gs Approx:

Around 50-55 hp (varies by specific model year and tuning)

Horsepower R100R Approx:

Around 65-70 hp (varies by specific model year and tuning)

Carburetors R80Gs:

Typically Dell'Orto PHM 32 or Bing 32 carburetors (verify specific model)

Carburetors R100R:

Typically Bing 40 carburetors (verify specific model)

🔧 Transmission

Transmission Type:

5-speed constant mesh gearbox

Optional Features:

Not applicable for these models as a factory option, but aftermarket upgrades exist.

Driveshaft System:

Shaft drive with Monolever (R80GS) or Paralever (R100R) rear suspension linkage.

📐 Dimensions

Wheelbase Approx:

Varies by model year and specific GS/R variants, generally around 1450-1480 mm.

Dry Weight R80Gs Approx:

Around 180-190 kg

Dry Weight R100R Approx:

Around 195-205 kg

🛡️ Safety Features

Safety Ratings Mention:

Not applicable in the same manner as modern vehicles; safety focuses on robust design, reliable braking, and rider control.

Braking System:

Hydraulic front disc brake, hydraulic rear drum or disc brake (depending on specific R100R variant and later R80GS models).

Frame Construction:

Steel tube frame designed for strength and rigidity.

💡 Technology Features

Infotainment Features:

Basic instrumentation (speedometer, tachometer, indicator lights). No electronic infotainment systems.

Rider Assistance:

ABS was not a standard or widely available option during the majority of this production span. Focus is on mechanical and rider-input based control.

Connectivity Features:

No electronic connectivity features.

🔧 Maintenance

Oil Change Interval:

Typically every 3,000-5,000 miles or annually, depending on usage and manufacturer recommendations found within the manual.

Valve Adjustment Interval:

Often recommended every 6,000-10,000 miles, or as per manual specifics.

Engine Oil Type:

Typically SAE 20W-50 or 10W-40 motorcycle-specific oil, adhering to API SF or SG classifications. Specific grades provided in the manual.

Transmission Oil Type:

GL-5 hypoid gear oil, often SAE 80W-90. Specific grades provided in the manual.

Final Drive Oil Type:

GL-5 hypoid gear oil, often SAE 80W-90. Specific grades provided in the manual.

Common Wear Items:

Clutch wear, output shaft seal leaks, charging system components (rectifier, voltage regulator), final drive spline wear, aging electrical wiring and connectors, fork seal leaks, universal joint wear.

Common Maintenance Tasks:

Regular checking and adjustment of clutch and throttle cables, proper valve clearance adjustment, checking for oil leaks, maintaining brake system integrity.

📚 Vehicle History

Bmw Motorrad Legacy:

BMW Motorrad has a long history of producing robust and reliable motorcycles, particularly known for their boxer engines and shaft drive systems.

Gs Lineage:

The R80GS is a pioneering model in the 'adventure touring' or 'dual-sport' motorcycle category, evolving from BMW's R80G/S model. The R100R represents a more road-oriented application of the later Paralever technology.

Paralever Introduction:

The R100R prominently features the Paralever rear suspension system, a significant upgrade from earlier Monolever designs, offering improved handling and stability.

Production Era:

These models represent a significant period of BMW's airhead boxer motorcycle development, bridging the gap between earlier models and the introduction of newer technologies.

🏆 Awards & Recognition

Model Legacy Recognition:

The R80GS is highly regarded as an early, capable adventure motorcycle, and the R100R is appreciated for its refinement and handling characteristics within the 'airhead' community.

Owner Satisfaction:

High owner satisfaction for reliability and longevity when properly maintained, contributing to their enduring classic status.