The Ducati 860 GT, produced from 1974 to 1976, is a classic Italian sport-touring motorcycle renowned for its distinctive styling and the engineering prowess of its 860cc, air-cooled, 90-degree V-twin Desmodromic engine. This model represents a significant evolution in Ducati's V-twin platform, offering a blend of performance and rideability that appealed to discerning riders of its era. Its robust construction and the unique Desmodromic valvetrain system contribute to its enduring appeal among collectors and enthusiasts who appreciate its historical significance and mechanical character. This comprehensive workshop repair and service manual provides detailed information for technicians and experienced owners. It covers all essential aspects of maintenance, repair, and overhaul for the Ducati 860 GT, including in-depth procedures for the engine, transmission, and electrical systems. The manual also includes crucial troubleshooting guides, wiring diagrams, and specific instructions for proprietary components, enabling users to perform routine servicing, complex repairs, and complete rebuilds, ensuring the longevity and optimal performance of their motorcycle. 🏷️ Basic Information Identification Make: Ducati Model: 860 GT Applicable Years: 1974, 1975, 1976 Codes Engine Code Variant: 860cc V-twin Desmodromic 👋 Introduction Market Position Target User: Technicians and experienced owners familiar with general automotive practices Competitive Analysis Value Proposition: Provides dealership-level repair information for DIY or independent shop use, enabling quality service and cost savings Key Features Special Emphasis: Highlights special aspects of the Ducati 860 GT and incorporates instructions for proprietary component manufacturers 📋 Manual Details Coverage Areas Scope: Complete Workshop Repair and Service Page Count Estimated Pages: High (typical for full workshop manuals of this era, exact number not specified but implied comprehensive) Manual Type Type: Workshop Repair Service Manual Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine: Detailed disassembly, assembly, overhaul, tuning, lubrication system, fuel system, ignition system, exhaust system Transmission: Disassembly, assembly, and repair procedures Electrical System: Wiring diagrams, troubleshooting, component testing, repair Bodywork: Repair and maintenance procedures Procedures Included Maintenance: Routine servicing, tune-ups, fluid changes, filter replacements Repair: Component-level repair, system diagnostics, troubleshooting guides, complete overhauls Installation: Removal and installation procedures for major components Technical Depth Depth: Comprehensive; from routine maintenance to in-depth engine and transmission rebuilds, including proprietary component repair instructions 📊 Manual Specifications File Format Format: PDF Print Quality Printability: Yes, printable Binding Type Binding: Digital (PDF, not a physical binding) Paper Type Paper: Not Applicable (Digital) ⚙️ Engine Specifications Primary Engine Configuration: 860cc, Air-cooled, 90-degree V-twin Valvetrain: Desmodromic, 2 valves per cylinder Performance Horsepower Estimate: Approx. 60-65 hp (specific figures not provided, but typical for the era and displacement) Fuel System Carburetors: Likely twin Dell'Orto PHM 30 or similar (manual will specify) Fuel Type: Unleaded gasoline (with potential lead substitute considerations for older engines, manual will clarify) 🔧 Transmission Standard Type: 5-speed sequential manual Optional Options: Not applicable for this model Features Clutch: Dry multi-plate clutch (manual will detail service procedures) 📐 Dimensions Exterior Body Style: Sport Touring Motorcycle Weights Dry Weight: Approx. 200-220 kg (specific figures not provided, typical for the era) 🛡️ Safety Features Active Features Braking System: Front and rear drum brakes or early disc brake systems (manual will provide specific details and service) Passive Features Chassis: Steel frame (manual covers inspection and repair) 💡 Technology Features Infotainment Features: N/A (Classic motorcycle, no modern infotainment) Driver Assistance Features: N/A (Classic motorcycle, no modern driver assistance systems) 🔧 Maintenance Service Intervals Engine Oil Change: Refer to manual for specific intervals based on mileage and usage (typically 2,500-5,000 miles or annually) Valve Clearance Adjustment: Crucial for Desmodromic engines; manual will specify intervals (e.g., every 5,000-7,500 miles) Fluid Specifications Engine Oil: Specific viscosity and type (e.g., SAE 20W-50 mineral oil, manual will specify) Gearbox Oil: Specific type and capacity (manual will specify) Known Issues Desmodromic System: Requires precise adjustment, wear in rockers and cams can occur over time, necessitating manual's detailed procedures Electrical System: Age-related degradation of wiring and connectors, particularly in ignition and charging systems; manual's wiring diagrams are vital Carburetion: Synchronization and tuning are critical for optimal performance; manual details the process Tools Required Special Tools: Torque wrench, feeler gauges, specific Ducati special tool numbers (as referenced in manual) 📚 Vehicle History Brand Heritage Manufacturer Origin: Italy Model Evolution Predecessor: Ducati 750 GT Designer: Taglioni designed the initial 750 GT, with styling input often attributed to Giorgetto Giugiaro for the GT series Production Production Period: 1974-1976 (as indicated by manual coverage) 🏆 Awards & Recognition Recognitions Historical Significance: Represents a significant step in Ducati's development of its V-twin engine platform, popular among enthusiasts for its classic styling and performance