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BMW

BMW R90 1978-1996 All Service Repair Manual

BMW R90 1978-1996 All Service Repair Manual

$16.99
$16.99
Alennusmyynti Loppuunmyyty
Toimituskulut lasketaan kassalla.
Vehicle data plateRef 453968
Brand
BMW
Vehicle
Motorcycle
Models covered
Misc, R90
Years
1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996
Format
PDF, searchable, print-ready
Delivery
Instant download after checkout
Language
English

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🏷️ Basic Information
Identification
Make:
BMW
Model:
R90
Model Designation:
R90/6
Model Notes:
This manual primarily covers the R90/6 model, although BMW often used the R90 designation broadly for related models.
Codes
Chassis Code:
247
Engine Code:
247
👋 Introduction
Market Position
Category:
Premium Motorcycle Segment
Target Audience:
Enthusiasts, owners, and independent mechanics seeking detailed repair and maintenance information for classic BMW motorcycles.
Competitive Analysis
Key Competitors:
Moto Guzzi V-twin models, Ducati V-twin models, other large-displacement European and Japanese motorcycles of the era.
Key Features
Distinctive Elements:
Shaft drive, boxer twin engine, robust build quality, touring capability, classic styling.
Manual Value Proposition:
Provides essential, in-depth knowledge for preserving and maintaining a significant piece of BMW motorcycle history, empowering owners with the ability to perform complex tasks.
📋 Manual Details
Coverage Areas
Years Covered:
1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996
Model Variants Covered:
All R90 variants, primarily R90/6, potentially including closely related R90S model specifics if shared by design.
Page Count
Estimated Pages:
Over 300 pages (typical for comprehensive service manuals of this era)
Manual Type
Type:
Service and Repair Manual
Language
Language:
English
Format
Format:
Downloadable PDF
📖 Manual Coverage
Systems Covered
Engine:
Complete engine overhaul, tuning, component diagnosis (e.g., cylinders, pistons, crankshaft, camshaft, valve train, timing chain, oil pump).
Fuel System:
Carburetor service (e.g., Bing CV), fuel pump, fuel lines, fuel tank, fuel filter replacement.
Transmission:
Gearbox disassembly, assembly, inspection, lubrication, clutch service (dry clutch for R90S, wet clutch for R90/6), drive shaft, final drive.
Electrical System:
Ignition system (breaker points, coils, spark plugs), lighting, charging system (alternator, voltage regulator), starter motor, battery, wiring diagrams, switches, fuses.
Brakes:
Front and rear brake systems (dual front discs for R90/6, single disc for R90S), master cylinder, brake lines, calipers, brake pad replacement, brake fluid service.
Suspension And Steering:
Front fork (conventional telescopic) overhaul, rear shock absorber replacement, swingarm bearings, steering head bearings, wheel bearings.
Chassis And Bodywork:
Frame inspection, seat, fuel tank removal/installation, fenders, exhaust system, side stand, center stand.
Procedures Included
Maintenance:
Routine checks, oil changes, filter replacements, spark plug tuning, valve clearance adjustment, brake bleeding, lubrication points.
Troubleshooting:
Diagnostic charts for common problems, identifying causes of poor performance, starting issues, electrical faults.
Repair:
Step-by-step instructions for component replacement, major overhauls, and system repairs.
Technical Specifications:
Torque values, clearances, fluid capacities, electrical resistance values, ignition timing settings.
Technical Depth
Depth:
Comprehensive: Covers everything from basic owner maintenance to full engine and transmission rebuilds, electrical system diagnostics, and chassis overhauls.
📊 Manual Specifications
File Format
File Type:
PDF
Searchability:
Likely text-searchable (depending on original scan quality)
Print Quality
Resolution:
Variable, but assumed to be clear enough for technical information display and printing.
Binding Type
Type:
N/A (Downloadable Digital Format)
Paper Type
Type:
N/A (Digital Format)
⚙️ Engine Specifications
Primary Engine
Type:
Air-cooled, four-stroke, horizontally opposed twin-cylinder boxer engine
Displacement:
900 cc (actual displacement for R90/6 is 897 cc)
Bore X Stroke:
90 mm x 70.6 mm
Compression Ratio:
8.2:1 (R90/6)
Performance
Horsepower:
60 hp (44 kW) at 6500 rpm (R90/6)
Torque:
75 Nm (55 lb-ft) at 5500 rpm (R90/6)
Fuel System
Carburetors:
2 x Bing 32/32 mm CV (Constant Velocity) carburetors (R90/6)
Fuel Type:
Unleaded premium gasoline
Lubrication
Oil Capacity:
Approx. 3.0 liters (including filter)
Oil Filter Type:
Spin-on cartridge (e.g., Mann-Filter W 712/3 or equivalent)
🔧 Transmission
Standard
Type:
5-speed manual gearbox
Drive:
Shaft drive to rear wheel
Features
Clutch Type:
Single dry plate clutch (R90S), Single wet multi-plate clutch (R90/6)
Final Drive Ratio:
Typically 32/11 or 33/11 depending on model variant and intended use.
Transmission Oil Capacity:
Approx. 1.3 liters
Transmission Oil Spec:
SAE 75W/90 API GL-5 gear oil
📐 Dimensions
Exterior
Length:
Approx. 2180 mm (R90/6)
Width:
Approx. 750 mm (handlebar width)
Height:
Approx. 1170 mm (seat height)
Weights
Dry Weight:
Approx. 200 kg (R90/6)
Gross Vehicle Weight:
Approx. 400 kg
Cargo
Fuel Tank Capacity:
24 liters (including 3.5-liter reserve)
🛡️ Safety Features
Ratings
Crash Test Data:
N/A (Motorcycle safety ratings were not standardized in the same way as cars during this era.)
Active Features
Braking System:
Dual front disc brakes (R90/6), single rear disc brake. Effective stopping power for the era.
Passive Features
Frame Design:
Steel tube duplex cradle frame providing rigidity and stability.
Lighting:
Halogen headlamp, taillight, turn signals.
💡 Technology Features
Infotainment
System Type:
N/A (Focus on mechanical and electrical systems for this era of motorcycle. No integrated infotainment).
🔧 Maintenance
Service Intervals
Oil Change Interval:
Every 5,000 km or annually, whichever comes first.
Valve Clearance Check:
Every 10,000 km or as specified in the manual.
Spark Plug Replacement:
Every 10,000 - 15,000 km, or based on condition.
Brake Fluid Flush:
Every 2 years.
Fluid Specifications
Engine Oil Spec:
SAE 20W/50 or 10W/40 API SG or higher (check manual for specific recommendations based on climate).
Brake Fluid Spec:
DOT 4
Known Issues
Common Wear Items:
Clutch wear, steering head bearings, wheel bearings, swingarm bearings, exhaust pipe corrosion, aging electrical wiring insulation.
Engine Specific Concerns:
Potential for oil leaks at base gasket and pushrod tubes, valve guide wear on high-mileage engines, timing chain tensioner wear.
Carburetor Issues:
Difficulty in maintaining synchronization, wear in throttle slides or needle jets.
📚 Vehicle History
Brand Heritage
Bmw Motorcycle Legacy:
BMW has a long history of producing robust, reliable, and technologically advanced motorcycles, particularly known for their boxer twin engines and shaft drive.
Model Evolution
R90 Series Introduction:
The R90 series (R90/6 and R90S) were introduced in 1973 as a more powerful and refined iteration of BMW's boxer twin platform, succeeding models like the R75/5.
R90 Development:
The R90/6 featured a 60 hp engine for broader appeal, while the R90S (with 67 hp, sportier styling, and dual front discs) was the flagship model. The production run spanned a significant period, reflecting its popularity and adaptability.
Production
Manufacturing Location:
Berlin-Spandau, Germany
Production Years:
1973-1976 for the R90/6 and R90S. The manual's extended coverage into 1996 suggests it may also include information applicable to later models that retained similar core architecture or maintenance procedures, or it is a broad compilation of service data.
🏆 Awards & Recognition
Recognitions
Contemporary Reviews:
Critically acclaimed for performance, handling, comfort, and build quality in period reviews. Often praised for its touring capabilities and character.
Ratings
Owner Satisfaction:
High enduring owner satisfaction due to reliability and classic appeal, making it a sought-after model.
Certifications
Certification Type:
N/A (Not applicable to aftermarket repair manuals).

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Check the model year and engine before you buy

Manufacturers change procedures, wiring and part numbers between model years and engine options. If your VIN plate shows a year or engine code that is not listed on the data plate above, contact us with the model, year and VIN and we will confirm coverage before you order.

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