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Ducati 906 Paso 1989 1990 1991 Workshop Service Repair Manual

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Basic Information Identification Make: Ducati Model: 906 Paso Years Covered: 1989, 1990, 1991 Codes Engine Code Designation: L-Twin Desmodromic, 2 Valves per Cylinder Introduction Market Position Market Position: The Ducati...
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Sku: 157096
Ducati 906 Paso 1989 1990 1991 Workshop Service Repair Manual
Basic Information
Identification
Make: Ducati
Model: 906 Paso
Years Covered: 1989, 1990, 1991
Codes
Engine Code Designation: L-Twin Desmodromic, 2 Valves per Cylinder
Introduction
Market Position
Market Position: The Ducati 906 Paso represented Ducati's foray into sport-touring motorcycles, aiming to offer a more comfortable and versatile platform than their pure sportbikes while retaining performance characteristics.
Competitive Analysis
Competitive Landscape: Competed against other European and Japanese sport-touring models of the era, offering a distinctive Italian flair, performance, and handling.
Key Features
Key Features: Monocoque frame design, liquid-cooled V-twin engine, faired bodywork for rider protection and aerodynamics, comfortable riding position for longer distances.
Manual Details
Coverage Areas
Systems Covered: Engine, Fuel System, Ignition System, Transmission, Clutch, Chassis, Suspension (Front & Rear), Brakes (Front & Rear), Electrical System, Bodywork, Cooling System, Exhaust System, Lubrication System, Wheels & Tires, Frame, Steering, Diagnostic Procedures, Maintenance Procedures, Troubleshooting, Specifications
Manual Completeness: 100% complete and intact, no missing or corrupt pages/sections.
Page Count
Page Count: 260
Manual Type
Manual Type: Workshop Service Repair Manual
Language
Language: English
Format
File Format: PDF
Manual Coverage
Systems Covered
Engine Mechanics: Detailed disassembly, assembly, inspection, and repair of the L-Twin engine, including valve adjustments (Desmodromic system), piston/cylinder inspection, crankshaft and conrod checks, timing belt replacement.
Fuel System: Carburetor tuning and rebuilding (likely Dell'Orto PHM or similar), fuel pump operation, fuel filter replacement, fuel tank and line servicing.
Electrical System: Wiring diagrams, starter system, charging system (alternator/stator, regulator/rectifier), ignition system (coils, spark plugs, CDI unit), lighting, horn, instrumentation.
Suspension And Steering: Front fork (Marzocchi or Paioli) overhaul, oil seal replacement, spring preload adjustment, rear shock absorber servicing and adjustment, steering head bearing inspection and adjustment.
Brake System: Front and rear brake caliper overhaul, master cylinder servicing, brake pad replacement, brake fluid bleeding, rotor inspection and replacement.
Chassis Frame: Inspection, repair, and maintenance of the monocoque frame and associated subframes.
Bodywork: Fairing removal, installation, and repair procedures.
Procedures Included
Maintenance Tasks: Scheduled maintenance, oil and filter changes, coolant checks and changes, chain lubrication and adjustment, brake fluid replacement, tire pressure checks, general inspection.
Repair Procedures: Step-by-step instructions for component removal, installation, disassembly, assembly, and adjustment for all major systems.
Troubleshooting Guides: Systematic troubleshooting flowcharts and explanations for common performance issues, electrical faults, and mechanical problems.
Installation Removal: Comprehensive guides for removing and installing all major components and sub-assemblies.
Disassembly Assembly: Detailed step-by-step instructions for breaking down and rebuilding components.
Technical Depth
Technical Depth: Comprehensive, covering routine maintenance, component overhaul, electrical diagnostics, and detailed repair procedures, suitable for both experienced mechanics and dedicated DIY enthusiasts.
Pictorial Diagrams: Features detailed illustrations, exploded diagrams, drawings, and photos guiding through service procedures.
Special Tools: References and illustrations of required special service tools and their usage.
Wear Limits: Includes specifications for wear limits of critical components to ensure proper repair.
Torque Specifications: Provides essential torque values for all threaded connections and fasteners.
Service Data: Contains essential service data, important points, and precautions for maintenance and repair.
Manual Specifications
File Format
File Quality: High-resolution, printable pages with clear text and diagrams.
Compatibility: Windows, Mac, Linux OS
Software Requirement: Adobe Reader
Print Quality
Printability: Yes, all pages are printable.
Binding Type
Binding Type: Digital (PDF)
Paper Type
Paper Type: Not Applicable (Digital)
Engine Specifications
Primary Engine
Engine Type: Liquid-cooled, 4-stroke, 90° L-twin, Desmodromic actuation, 2 valves per cylinder
Performance
Bore X Stroke: 92 mm x 68 mm (approx.)
Displacement: 904 cc
Horsepower: Approx. 84 HP @ 7000 RPM
Torque: Approx. 88 Nm @ 6000 RPM
Compression Ratio: Approx. 9.5:1 (typical for this era and engine type)
Fuel System
Carburetion: Dual Dell'Orto PHM 40 (or similar) carburetors
Fuel Capacity: Approx. 21 Liters
Transmission
Standard
Transmission Type: 5-speed constant mesh
Optional
Optional Transmission: N/A
Features
Clutch Type: Hydraulic dry clutch
Final Drive: Chain drive
Dimensions
Exterior
Wheelbase: Approx. 1450 mm
Length: Approx. 2160 mm
Width: Approx. 770 mm
Height: Approx. 1180 mm
Weights
Dry Weight: Approx. 190 kg
Wet Weight: Approx. 210 kg (with fluids)
Safety Features
Ratings
Safety Ratings: N/A (Motorcycle safety is typically assessed by rider skill and component integrity, not formal crash ratings like cars).
Active Features
Active Safety Features: Powerful dual front disc brakes, single rear disc brake, responsive suspension for stable handling.
Passive Features
Passive Safety Features: Full fairing for rider protection from elements and debris, sturdy frame construction.
Technology Features
Infotainment
Infotainment Systems: Basic analog instrumentation (speedometer, tachometer, fuel gauge, temperature gauge). No modern infotainment features.
Driver Assistance
Driver Assistance Features: None. Motorcycle design focuses on rider input and mechanical systems.
Connectivity
Connectivity Features: None.
Maintenance
Service Intervals
Oil Change Interval: Typically every 5,000-7,500 km or annually. Specific interval in manual.
Desmo Valve Check Interval: Critical maintenance, often required at higher mileage intervals (e.g., 10,000-20,000 km), detailed in the manual.
Fluid Specifications
Engine Oil Type: High-quality motorcycle-specific synthetic or semi-synthetic oil, viscosity typically 10W-40 or 20W-50. Specific Ducati recommendation required.
Coolant Type: Ethylene glycol-based antifreeze mixture (50/50 with distilled water). Specific Ducati spec required.
Brake Fluid Type: DOT 4 or DOT 5.1 (check manual for exact specification and compatibility).
Clutch Fluid Type: Mineral oil or DOT 4, depending on clutch slave cylinder design. Check manual.
Known Issues
Known Issues: Potential for aging electrical connectors, fuel delivery issues if not maintained, Desmodromic valve adjustment requiring specialized knowledge, wear on certain chassis components over time.
Common Repair Items: Carburetor synchronization, timing belt inspection/replacement, checking for oil leaks, fork seal replacement.
Vehicle History
Brand Heritage
Brand Heritage: Ducati boasts a rich racing heritage and a reputation for producing high-performance, distinctive Italian motorcycles with innovative engineering, particularly its L-twin engines and Desmodromic valve actuation.
Model Evolution
Model Evolution Notes: The Paso line was an experiment by Ducati to move into the sport-touring segment, a departure from their traditional sportbike focus. The 906 was an evolution of the earlier 750 Paso, featuring a larger displacement engine.
Design Philosophy: Designed by Massimo Tamburini, known for its aerodynamic fairing and innovative monocoque frame which integrated the airbox and frame structure.
Production
Production Years: 1989-1991 (for the 906 model)
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