BMW R80 G S R80 GS MOTORBIKE Workshop Service Repair Manual

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🏷️ Basic Information Identification Make: BMW Model: R80 G/S Model Nickname: R80GS Vehicle Type: Motorcycle Generation Generation Code: Monolever Era Codes Engine Code Designation: Type 247 👋 Introduction Market Position...

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UGS: 471490

Mots clés: BMW G Series Motorcycle Motorcycles R80 G/S R80 GS

Variantes de produits

Description

🏷️ Basic Information

Identification

Make:

Model:

R80 G/S

Model Nickname:

R80GS

Vehicle Type:

Motorcycle

Generation

Generation Code:

Monolever Era

Codes

Engine Code Designation:

Type 247

👋 Introduction

Market Position

Segment:

Dual-sport / Adventure Motorcycle

Era Significance:

Pioneering the modern adventure motorcycle segment, combining off-road capability with on-road comfort and reliability.

Competitive Analysis

Competitors Of Era:

Honda Africa Twin (later models), Yamaha Tenere, Suzuki DR series, and other European dual-sports.

Key Features

Design Philosophy:

Robust, air-cooled boxer twin engine, shaft drive, long-travel suspension, and utilitarian design for versatility.

Innovation:

Introduction of the Monolever rear suspension system, simplifying the drivetrain and improving handling over earlier Paralever systems on some BMW models.

📋 Manual Details

Coverage Areas

Primary Coverage:

Workshop Service Repair

Included Systems:

Engine, Transmission, Chassis, Electrical, Fuel, Brakes, Suspension, Frame, Bodywork, Equipment

Page Count

Estimated Page Count:

Approx. 200-300 Pages (typical for this era's comprehensive manuals)

Manual Type

Type:

Comprehensive Workshop Manual / Service Manual / Repair Manual

Language

Language:

English (likely, standard for international markets)

Format

Format:

Digital (PDF likely, given product description format)

File Format:

PDF (Portable Document Format)

Print Quality:

High-resolution scans for clarity of text and diagrams, suitable for printing.

Binding Type:

N/A (Digital)

Paper Type:

N/A (Digital)

Searchability:

Likely fully searchable text within the PDF for quick information retrieval.

📖 Manual Coverage

Systems Covered

Engine System:

Detailed disassembly, inspection, and reassembly of the 785/798cc boxer twin engine, including cylinder head, pistons, crankshaft, camshafts, timing, lubrication system, and cooling (air).

Engine Electrical:

Ignition system (points/electronic), charging system (alternator, regulator), starter system, wiring diagrams, and component testing.

Fuel System:

Carburetor tuning and overhaul (likely Bing type), fuel pump operation, fuel tank and lines maintenance, and fuel filter replacement.

Exhaust System:

Inspection, repair, and replacement of exhaust headers, mufflers, and mounting hardware.

Clutch System:

Operation and maintenance of the dry single-plate clutch, clutch lever and cable adjustment.

Transmission:

Gearbox disassembly, inspection, lubrication, and troubleshooting. Includes gear selection mechanism.

Driveshaft:

Maintenance and inspection of the driveshaft, universal joint, and final drive splines.

Front Suspension:

Front fork (telescopic) disassembly, seal replacement, oil level and type specifications, and general inspection.

Steering System:

Steering head bearing adjustment, maintenance, and replacement. Handlebar inspection and tightening.

Rear Wheel Drive:

Monolever rear suspension system, including shock absorber adjustment and replacement, swingarm bearing inspection, and final drive hub maintenance.

Brake System:

Hydraulic front and rear brake systems, including caliper overhaul, master cylinder maintenance, brake fluid specifications, bleeding procedures, and pad replacement.

Pedal Assembly:

Brake and gearshift lever assembly inspection, lubrication, and adjustment.

Wheels Tires:

Wheel bearing inspection and replacement, spoke tensioning (if applicable to specific models), tire pressure recommendations, and basic wheel balancing procedures.

Frame System:

Frame inspection for damage, tightening of frame components, and mounting points for engine and suspension.

Equipment:

Includes items like the dual seat assembly (removal, installation, locking mechanism), luggage rack, and fairings (if equipped on certain variants).

General Electrics:

Comprehensive electrical system diagnosis, including battery maintenance, fuses, relays, switches, and wiring harness troubleshooting.

Instruments:

Speedometer, tachometer, indicator lights, and their electrical connections and functionality.

Light System:

Headlight, taillight, turn signals, and brake light operation, bulb replacement, and wiring.

Procedures Included

Maintenance:

Regular service tasks, lubrication points, fluid changes, filter replacements, chain adjustment (if applicable to specific variations), brake bleeding, and general inspection checklists.

Troubleshooting:

Diagnostic flowcharts and symptom-based troubleshooting guides for common engine, electrical, and mechanical issues.

Repair:

Step-by-step instructions for component disassembly, repair, and reassembly for virtually all mechanical and electrical systems.

Technical Specifications:

Torque values, clearances, fluid capacities, electrical resistance values, and other critical data required for accurate servicing.

Wiring Diagrams:

Detailed, often color-coded, electrical schematics for accurate diagnosis and repair of the electrical system.

Technical Depth

Depth:

Comprehensive: Covers everything from basic pre-ride checks and fluid top-ups to full engine rebuilds, gearbox overhauls, and electrical system diagnostics and repair.

⚙️ Engine Specifications

Primary Engine

Engine Type:

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

Displacement Cc:

785 cc / 798 cc (depending on specific R80 G/S variant and bore/stroke configurations)

Bore X Stroke Mm:

Approx. 82.5 mm x 74.5 mm (for 798cc, consult manual for precise figures)

Compression Ratio:

Typically around 8.2:1 to 9.2:1 (varies by specific model and market)

Valve Train:

OHV (Overhead Valve) with pushrods and rockers

Cooling System:

Air-cooled

Performance

Horsepower Ps Hp:

Approx. 50-55 PS (37-40 kW) at 6,500 rpm (varies by specific model and tuning)

Torque Nm Lbft:

Approx. 57-62 Nm (42-46 lb-ft) at 4,000 rpm (varies by specific model and tuning)

Fuel System

Carburetion:

Dual Bing constant velocity carburetors (e.g., Bing 32/40/42)

Fuel Type:

Unleaded gasoline (petrol)

Fuel Capacity Liters Gallons:

Approx. 19-21 Liters (5.0-5.5 US gallons)

🔧 Transmission

Standard

Type:

5-speed constant mesh manual gearbox

Final Drive:

Shaft drive with universal joint and enclosed drive shaft

Features

Clutch Type:

Single dry plate, diaphragm spring

Gear Ratios:

Specific ratios will be detailed in the manual; typical for the era for good touring and off-road use.

Transmission Oil Type:

GL-5 SAE 80W/90 Hypoid Gear Oil (BMW recommended)

📐 Dimensions

Exterior

Length Mm:

Approx. 2200 mm (varies slightly by model year)

Width Mm:

Approx. 800 mm (handlebar width)

Height Mm:

Approx. 1300 mm (seat height varies)

Weights

Dry Weight Kg:

Approx. 185-195 kg (408-430 lbs)

Gross Vehicle Weight Rating Kg:

Approx. 380-400 kg (838-882 lbs)

🛡️ Safety Features

Ratings

Safety Certification:

Certified to relevant national and international motorcycle safety standards of the period.

Active Features

Brakes:

Dual disc front brake, single disc rear brake (hydraulic actuation) providing strong stopping power.

Suspension:

Long-travel telescopic front fork and Monolever rear suspension designed for stability and compliance over varied terrain.

Passive Features

Chassis Construction:

Strong steel tube frame providing rigidity and rider protection in typical falls.

💡 Technology Features

Infotainment

Features:

Basic instrumentation: speedometer, tachometer, odometer, trip meter, neutral indicator, oil pressure light, turn signal indicators.

Driver Assistance

Features:

None in the modern sense; focused on mechanical reliability and rider input.

🔧 Maintenance

Service Intervals

Oil Change Interval Km Miles:

Typically every 5,000-10,000 km (3,000-6,000 miles) or annually, depending on usage. Consult manual for exact intervals.

Valve Clearance Check Km Miles:

Every 10,000-20,000 km (6,000-12,000 miles). Manual will specify precise figures.

Spark Plug Replacement Km Miles:

Every 10,000-15,000 km (6,000-9,000 miles). Specific plug types and gaps in manual.

Fluid Specifications

Engine Oil Type:

API SG/SH or higher, SAE 20W-50 or 10W-40 (depending on climate). BMW recommended specific oils. Manual specifies exact type and quantity.

Brake Fluid Type:

DOT 4 hydraulic fluid (minimum)

Fork Oil Type:

Specific suspension fluid (e.g., SAE 15W), quantity and level specified in manual.

Known Issues

Common Wear Items:

Clutch plates, universal joint, driveshaft splines, fork seals, head bearings, ignition points (on older models).

Potential Problems:

Carburetor tuning drift, electrical connector corrosion, charging system issues if not maintained.

📚 Vehicle History

Brand Heritage

Brand Legacy:

BMW Motorrad, renowned for engineering excellence, durability, and pioneering motorcycle technology since the early 20th century.

Model Evolution

Predecessors:

Successor to earlier R80 models, with the G/S designation (Gelände/Straße - Off-road/Street) marking a significant shift towards adventure touring.

Production Years:

The R80 G/S was produced from 1980 to 1987.

Successor Models:

The R80 G/S paved the way for the R100GS and subsequent GS series models which became iconic in the adventure touring market.

Production

Manufacturing Location:

Berlin, Germany

🏆 Awards & Recognition

Recognitions

Market Impact:

Widely recognized for its durability, off-road capability, and suitability for long-distance travel, establishing BMW as a leader in the adventure motorcycle segment.