🏷️ Basic Information

Make:

BMW

Model:

R100

Model Variant:

All Variants (likely including R100/7, R100S, R100CS, R100RT, R100RS, R100GS - though GS is later)

Year:

1982

Chassis Code:

Likely R100/7 variants, R100S, R100CS, R100RT, R100RS

Engine Code:

M53/1, M53/2, M54/2 (depending on specific R100 sub-model)

👋 Introduction

Segment:

Premium Air-Cooled Boxer Twin Motorcycle Segment

Target Audience:

DIY mechanics, vintage BMW enthusiasts, owners seeking to maintain and repair their R100 models

Competitors:

Kawasaki KZ Series, Honda CB Series, Yamaha XS Series of the era, other contemporary European and Japanese motorcycles

Manual Value Proposition:

Empowers owners to perform comprehensive maintenance and repairs, reducing reliance on costly dealer services and ensuring the longevity of a classic machine.

Vehicle Appeal:

Known for its robust engineering, reliable air-cooled boxer engine, shaft drive, and touring capabilities (especially RT models).

📋 Manual Details

Engine:

Complete engine overhaul, tuning, diagnostics, component replacement

Transmission:

Gearbox disassembly, assembly, clutch service, drive shaft maintenance

Chassis Suspension:

Front fork service, rear shock absorber replacement, swingarm and bearing service

Brakes:

Front and rear brake system overhaul (disc brakes), master cylinder and caliper service

Electrical System:

Wiring diagrams, ignition system, charging system (alternator/generator, battery), lighting, starter

Fuel System:

Carburetor service (Bing), fuel tank, fuel lines, fuel pump (if applicable)

Body And Frame:

Frame inspection, body panel removal and installation, fairing (if applicable)

Wheels And Tires:

Wheel bearing service, tire replacement, spoke wheel maintenance

Exhaust System:

Exhaust pipe and muffler replacement, gasket service

Approximate Pages:

Estimated 200-400 pages (typical for comprehensive manuals of this era)

Type:

Service and Repair Manual

Language:

English

Format:

Downloadable (Digital)

📖 Manual Coverage

Engine Mechanical:

Cylinder head, valve train, piston and connecting rod assembly, crankshaft, camshaft timing, lubrication system

Engine Performance:

Carburetor tuning, ignition timing adjustment, compression testing, performance troubleshooting

Transmission Drivetrain:

Clutch operation and adjustment, gearbox ratios, shift mechanism, final drive (bevel gear housing)

Suspension Steering:

Telescopic fork disassembly and rebuild, steering head bearing adjustment and replacement, rear shock absorber specifications and replacement

Braking System:

Hydraulic disc brake system components, bleeding procedures, pad replacement, caliper and master cylinder seal replacement

Electrical Ignition:

Bosch ignition system details, timing specifications, spark plug recommendations, ignition coil testing

Electrical Charging:

Alternator (or generator) testing and replacement, voltage regulator, battery maintenance and testing

Electrical Lighting Accessories:

Headlight, taillight, brake light, turn signals, horn, instrument cluster lighting

Fuel Delivery:

Bing CV carburetor tuning and rebuild kits, float bowl adjustment, fuel filter replacement

Frame Bodywork:

Frame integrity checks, fuel tank mounting, seat mounting, fender replacement

Routine Maintenance:

Oil change, filter replacement, spark plug replacement, air filter cleaning/replacement, valve clearance adjustment, carburetor synchronization

Troubleshooting:

Diagnostic charts for common problems related to starting, running, electrical systems, and braking

Engine Rebuild:

Complete engine disassembly, inspection of wear components (pistons, rings, cylinders, bearings), reassembly procedures

Carburetor Rebuild:

Step-by-step instructions for disassembling, cleaning, replacing seals and jets, and reassembling Bing carburetors

Brake Overhaul:

Detailed instructions for caliper seal replacement, master cylinder rebuild, and brake fluid bleeding

Fork Rebuild:

Front fork oil change, seal replacement, and damping rod maintenance

Electrical Diagnostics:

Using multimeters to test ignition, charging, and lighting circuits

Wheel Service:

Wheel bearing replacement and lubrication, spoke tensioning advice

Level:

Comprehensive (covers routine maintenance to full engine and transmission rebuilds)

Detail Level:

Detailed specifications, torque values, tolerances, and schematics

Diagnostic Tools:

Guidance on using common tools for diagnosis (e.g., compression tester, multimeter)

📊 Manual Specifications

Format:

PDF (typically)

Searchability:

Searchable text (common for modern digital manuals)

Quality:

High-resolution, printable (designed for clear reproduction)

Type:

Not applicable for download (digital format)

Type:

Not applicable for download (digital format)

⚙️ Engine Specifications

Type:

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

Displacement:

980 cc (971 cc actual)

Bore X Stroke:

94 mm x 70.7 mm

Compression Ratio:

8.2:1 to 8.5:1 (depending on model variant)

Valve Train:

Overhead valve (OHV), pushrod actuated, 2 valves per cylinder

Horsepower:

Approx. 65-70 HP @ 6000-7250 RPM (depending on variant)

Torque:

Approx. 75-80 Nm @ 4500-5500 RPM (depending on variant)

Carburetion:

Dual Bing 32mm or 40mm constant velocity (CV) carburetors

Fuel Type:

Unleaded gasoline (as of 1982, leaded was still common but unleaded capability existed)

Type:

Wet sump

Oil Capacity:

Approx. 2.5 liters (2.6 US quarts)

🔧 Transmission

Type:

5-speed manual gearbox

Type:

None (standard across R100 models for this year)

Drive:

Shaft drive (final drive via bevel gear housing)

Clutch:

Single dry plate, diaphragm spring

📐 Dimensions

Wheelbase:

Approx. 1465 mm (57.7 inches)

Length:

Varies by model (e.g., RT models are longer)

Dry Weight:

Approx. 190-230 kg (419-507 lbs) depending on model variant (e.g., RT heavier)

Gross Vehicle Weight:

Typically around 400-420 kg (880-925 lbs)

🛡️ Safety Features

Crash Safety:

Not applicable (motorcycle classification)

Braking System:

Hydraulic front and rear disc brakes (Brembo or ATE)

Suspension:

Telescopic front fork, dual rear shock absorbers for stable handling

Lighting:

Halogen headlight, integrated turn signals, brake light

💡 Technology Features

Features:

Basic analog instrumentation (speedometer, tachometer, fuel gauge, voltmeter/ammeter, oil pressure light), typically no radio or audio systems.

Features:

None (focus on mechanical integrity and rider control)

🔧 Maintenance

Oil Change:

Every 5,000 - 10,000 km (3,000 - 6,000 miles) or annually

Valve Adjustment:

Every 10,000 km (6,000 miles)

Spark Plug Replacement:

Every 10,000 km (6,000 miles)

Carburetor Sync:

As needed, typically every 10,000-20,000 km (6,000-12,000 miles) or when performance issues arise

Engine Oil:

SAE 20W-50 or SAE 10W-40 (depending on climate); API SG or higher recommended

Gearbox Oil:

GL-5 80W/90 hypoid gear oil

Final Drive Oil:

GL-5 80W/90 hypoid gear oil

Brake Fluid:

DOT 3 or DOT 4 hydraulic fluid

Fork Oil:

Approx. SAE 15W fork oil (volume specific to fork type, typically 150-170cc per leg)

Common Wear Items:

Pushrod seals (oil leaks), output shaft seal, clutch wear, charging system components (voltage regulator), starter motor brushes.

Electrical Faults:

Intermittent charging issues, headlight switch failure, starter solenoid problems.

Carburetor Issues:

Difficulty in maintaining synchronization, fuel leaks, idle instability if not properly tuned.

📚 Vehicle History

Legacy:

BMW Motorrad, renowned for engineering excellence, boxer engines, and shaft drive since the 1920s.

Predecessors:

R75/5, R90/6, R100/7, R100RS, R100RT

Key Changes For 1982:

Introduction of the R100GS (off-road variant) begins in late 1986/early 1987, so 1982 models are primarily updated versions of earlier R100 variants with cosmetic and minor technical refinements.

Production Period:

R100 line produced from 1976 to 1995 (with various models like R100/7, RS, RT, CS, S, G/S, GS)

Manufacturing Location:

Berlin, Germany

🏆 Awards & Recognition

Industry Awards:

While specific 'awards' for the 1982 model are not commonly cited, the R100 series as a whole is recognized for its durability, touring comfort, and contribution to BMW's reputation for quality and engineering in the motorcycle industry. Often featured in 'best of' lists for classic motorcycles.

Owner Satisfaction:

Generally high among owners who appreciate its classic design, robust build, and the experience of riding a well-engineered machine. Longevity is a key factor.