BMW R90 1986 Full Service Repair Manual

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🏷️ Basic Information Identification Make: BMW Model: R90 Year: 1986 Product Type: Full Service Repair Manual 👋 Introduction Market Position Target Audience: BMW R90 motorcycle owners and independent repair shops seeking in-depth technical guidance. Value Proposition: Enables owners to perform a wide range of maintenance and repair tasks, reducing reliance on professional service and preserving the motorcycle's value. Competitive Analysis Alternative Resources: Owner's manuals (less technical), fragmented online forums (unverified information), and factory service bulletins (often incomplete). Key Features Completeness: Comprehensive coverage for all major systems, facilitating restoration and ongoing maintenance. Detail Level: High level of technical detail, including exploded diagrams and specific torque values. 📋 Manual Details Coverage Areas Manual Type: Service and Repair Manual Language: English Format: Digital (likely PDF, based on common offerings) Page Count Estimate: 300+ 📖 Manual Coverage Systems Covered Engine Mechanical: Detailed rebuild and repair of the R90 engine, including cylinder head, pistons, crankshaft, camshaft, valve train, and timing components. Engine Fuel System: Comprehensive coverage of the carburetion system (likely Bing carburetors), fuel delivery, and tuning procedures. Engine Ignition System: Diagnosis and repair of the ignition system, including points, condenser, coils, and spark plugs. Transmission: Repair, adjustment, and rebuilding of the gearbox, clutch system, and final drive. Brakes: Service and overhaul of the braking system, including caliper, master cylinder, brake lines, and pad/shoe replacement. Suspension: Maintenance and repair of front forks and rear shock absorbers, including fluid changes and seal replacement. Electrical System: Wiring diagrams, troubleshooting of lighting, charging system (alternator/generator), starter motor, and battery. Frame And Bodywork: Information on frame components, body panel removal and installation, and general chassis maintenance. Procedures Included Routine Maintenance: Oil changes, filter replacements, spark plug service, air filter cleaning/replacement, chain adjustment, and brake adjustments. Troubleshooting: Diagnostic procedures for common starting issues, running problems, electrical faults, and braking anomalies....

Type: Motorcycle

Säljare:

Sku: 417322

Collections: ALL BMW

Tags: 1986 BMW Cars Misc Motorcycle R90

Produktvarianter

Description

🏷️ Basic Information

Identification

Make:

Model:

Year:

Product Type:

Full Service Repair Manual

👋 Introduction

Market Position

Target Audience:

BMW R90 motorcycle owners and independent repair shops seeking in-depth technical guidance.

Value Proposition:

Enables owners to perform a wide range of maintenance and repair tasks, reducing reliance on professional service and preserving the motorcycle's value.

Competitive Analysis

Alternative Resources:

Owner's manuals (less technical), fragmented online forums (unverified information), and factory service bulletins (often incomplete).

Key Features

Completeness:

Comprehensive coverage for all major systems, facilitating restoration and ongoing maintenance.

Detail Level:

High level of technical detail, including exploded diagrams and specific torque values.

📋 Manual Details

Coverage Areas

Manual Type:

Service and Repair Manual

Language:

English

Format:

Digital (likely PDF, based on common offerings)

Page Count Estimate:

📖 Manual Coverage

Systems Covered

Engine Mechanical:

Detailed rebuild and repair of the R90 engine, including cylinder head, pistons, crankshaft, camshaft, valve train, and timing components.

Engine Fuel System:

Comprehensive coverage of the carburetion system (likely Bing carburetors), fuel delivery, and tuning procedures.

Engine Ignition System:

Diagnosis and repair of the ignition system, including points, condenser, coils, and spark plugs.

Transmission:

Repair, adjustment, and rebuilding of the gearbox, clutch system, and final drive.

Brakes:

Service and overhaul of the braking system, including caliper, master cylinder, brake lines, and pad/shoe replacement.

Suspension:

Maintenance and repair of front forks and rear shock absorbers, including fluid changes and seal replacement.

Electrical System:

Wiring diagrams, troubleshooting of lighting, charging system (alternator/generator), starter motor, and battery.

Frame And Bodywork:

Information on frame components, body panel removal and installation, and general chassis maintenance.

Procedures Included

Routine Maintenance:

Oil changes, filter replacements, spark plug service, air filter cleaning/replacement, chain adjustment, and brake adjustments.

Troubleshooting:

Diagnostic procedures for common starting issues, running problems, electrical faults, and braking anomalies.

Rebuilds:

Complete engine, transmission, and brake system rebuild procedures with torque specifications and tolerances.

Component Replacement:

Step-by-step instructions for replacing wear items like cables, bearings, seals, and gaskets.

Tuning:

Carburetor synchronization, ignition timing adjustments, and general engine performance tuning.

Technical Depth

Depth Level:

Comprehensive, covering from basic maintenance to complete engine and transmission overhauls.

Diagnostic Capabilities:

Detailed diagnostic flowcharts and explanations for identifying and resolving mechanical and electrical issues.

Special Tools:

Identification of specialized tools required for specific procedures, often with diagrams.

📊 Manual Specifications

File Format

Digital Format:

PDF (Portable Document Format)

Searchability:

Text-searchable for quick information retrieval.

Print Quality:

High-resolution scans suitable for printing of individual pages or sections.

Binding Type

Physical Manual Binding:

N/A (Digital)

Paper Type

Physical Manual Paper:

N/A (Digital)

⚙️ Engine Specifications

Primary Engine

Engine Type:

Air-cooled, four-stroke boxer-twin engine

Displacement:

897 cc (54.7 cu in)

Bore X Stroke:

90.0 mm x 70.6 mm

Compression Ratio:

8.2:1

Valve Train:

Overhead valves (OHV), pushrod actuated

Performance

Horsepower Rating:

60 HP at 6,250 rpm (approximate)

Torque Rating:

75 Nm (55 lb-ft) at 4,900 rpm (approximate)

Fuel System

Carburetors:

Dual Bing 32/32 mm (Type 54/32)

Fuel Type:

Unleaded gasoline (minimum 91 RON / 87 AKI recommended)

Fuel Tank Capacity:

26 liters (6.87 US gallons)

Fuel Pump:

Mechanical

🔧 Transmission

Standard

Type:

5-speed manual gearbox

Drive:

Shaft drive

Features

Clutch:

Single dry plate clutch, hydraulically actuated

Gear Ratios Estimate:

1st: 3.44, 2nd: 2.44, 3rd: 1.77, 4th: 1.39, 5th: 1.00

Final Drive Ratio:

1:3.33 (33/10 teeth)

Transmission Fluid Spec:

SAE 80W-90 GL-5 gear oil

Transmission Fluid Capacity:

200 ml (0.21 US quarts)

📐 Dimensions

Exterior

Wheelbase:

1,465 mm (57.7 inches)

Seat Height:

820 mm (32.3 inches)

Weights

Dry Weight:

215 kg (474 lbs)

Gross Vehicle Weight Rating Estimate:

400 kg (882 lbs)

🛡️ Safety Features

Ratings

Crash Test Ratings:

N/A (Motorcycle)

Active Features

Braking System:

Dual disc front brakes (likely 260mm), single disc rear brake (likely 250mm)

Tire Size Front:

3.00-18 (or 100/90-18)

Tire Size Rear:

4.00-18 (or 120/90-18)

Passive Features

Lighting:

Halogen headlight, taillight, brake light, turn signals.

💡 Technology Features

Infotainment

Infotainment System:

N/A (Classic motorcycle)

Driver Assistance

Electronic Aids:

N/A (Classic motorcycle - no ABS, traction control, etc.)

Connectivity

Connectivity Features:

N/A (Classic motorcycle)

🔧 Maintenance

Service Intervals

Oil Change Interval:

Every 5,000 km (3,000 miles) or annually.

Engine Valve Adjustment:

Every 10,000 km (6,000 miles).

Spark Plug Replacement:

Every 10,000 km (6,000 miles).

Carburetor Sync Tune:

As needed, typically every 10,000-20,000 km (6,000-12,000 miles) or if symptoms appear.

Final Drive Oil Change:

Every 20,000 km (12,000 miles).

Fluid Specifications

Engine Oil Type:

SAE 20W-50 API SF or higher motorcycle specific oil.

Engine Oil Capacity:

2.5 liters (2.64 US quarts) with filter change.

Brake Fluid Type:

DOT 4 (or DOT 3 for older systems if specified).

Known Issues

Common Wear Items:

Valve guides, clutch wear, final drive splines, fork seals, and wiring harness degradation over time.

Typical Repairs:

Carburetor rebuilds, replacement of aging rubber components, electrical system maintenance, and fuel line replacement.

📚 Vehicle History

Brand Heritage

Bmw Motorcycle Division:

BMW Motorrad has a long history dating back to the early 20th century, known for quality, engineering, and distinctive boxer-twin engines.

Model Evolution

R90 Series Legacy:

The R90 was part of BMW's successful airhead boxer series, which began with the R50/5 and evolved through models like the R75/5, R90/6, R100/7, and the R90S (a sportier variant). The R90 model itself was produced from 1973-1976, with the R90/6 and R90S being the primary designations. The 1986 manual likely covers models that are variants or continue the lineage of the R90 platform.

Production

Production Period:

While the R90 was primarily 1973-1976, the manual for a '1986 BMW R90' suggests a specific market variant or perhaps a reference to a later model that retained R90 lineage or shared components. BMW continued production of its airhead models well into the 1990s.

Manufacturing Location:

Berlin, Germany (Spandau plant)

🏆 Awards & Recognition

Recognitions

Bmw Motorcycle Reputation:

BMW motorcycles of this era are renowned for their build quality, durability, and rider comfort, making them highly regarded among enthusiasts and for long-distance touring.

Ratings

Owner Satisfaction:

Consistently high owner satisfaction for longevity and reliability when properly maintained.