🏷️ Basic Information Identification Make: Ducati Model: 860 GT / 860 GTS Years Covered: 1976, 1977, 1978, 1979 Codes Engine Code Family: Ducati 90-degree V-twin (Desmodromic) 👋 Introduction Market Position Target Audience: Ducati 860 GT/GTS owners, independent mechanics, motorcycle enthusiasts looking for detailed repair and maintenance guidance. Competitive Analysis Value Proposition: Provides factory-level repair information, enabling owners to perform maintenance and repairs accurately, saving on dealership costs and ensuring proper upkeep of a classic motorcycle. Key Features Accuracy And Detail: Vehicle-specific, factory-authored information with step-by-step instructions, diagrams, illustrations, and wiring schematics. Completeness: Covers all major topics, ensuring no critical repair or maintenance procedure is omitted. Usability: Clear, concise text combined with visual aids makes complex procedures accessible to a wide range of skill levels. 📋 Manual Details Coverage Areas Primary Coverage: Service, Repair, Workshop Secondary Coverage: Maintenance, Troubleshooting, Diagnostics, Adjustments, Specifications Page Count Estimated Page Count: Refer to actual manual for precise count; typical workshop manuals of this era are extensive. Manual Type Type: Factory Service Manual / Workshop Manual Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine: Complete overhaul, disassembly, assembly, tuning, ignition, lubrication, cooling, fuel, intake, exhaust Transmission: Gearbox inspection, repair, clutch operation, shifting mechanisms Drive Train: Drive chain adjustment and maintenance, sprockets Chassis: Frame, forks, steering head, rear suspension (shocks) Electrical System: Wiring diagrams, lighting, ignition system, charging system, battery, troubleshooting electrical faults Fuel System: Carburetor tuning and overhaul, fuel lines, fuel tank Bodywork: Fairings, seat, fenders, general body maintenance and repair Procedures Included Routine Maintenance: Oil changes, filter replacements, chain lubrication, bolt checks, tire pressure Periodic Checks: Valve adjustments (Desmodromic system), ignition timing, brake pad wear, suspension play Repair And Rebuild: Engine rebuild, transmission overhaul, carburetor rebuild, suspension fork service Troubleshooting: Step-by-step diagnostic procedures for common and advanced issues Technical Depth Depth: Comprehensive, covering everything from basic maintenance to full engine disassembly and rebuild, suitable for professional mechanics and skilled enthusiasts. 📊 Manual Specifications File Format Format: PDF Compatibility: All Windows and Mac versions Print Quality Printability: Fully printable, allowing for individual page printing Binding Type Binding: N/A (Digital PDF) Paper Type Paper Type: N/A (Digital PDF) Requirements Reader Software: Adobe PDF Reader ⚙️ Engine Specifications Primary Engine Engine Type: 90-degree V-twin, four-stroke, Desmodromic valve actuation Displacement: 860 cc (52.5 cu. in.) Bore X Stroke: Refer to manual for specific measurements Performance Horsepower: Approx. 60-65 hp (depending on specific model and tuning) Torque: Refer to manual for specific measurements Fuel System Carburetion: Twin Dell'Orto carburetors (e.g., PHF 30 or PHM 30 series, depending on variant) Fuel Type: Leaded or Unleaded gasoline (consult manual for specific recommendations) Lubrication Oil Type: Refer to manual for specific viscosity and API rating (e.g., SAE 20W-50 motorcycle-specific oil) Oil Capacity: Refer to manual for specific capacity (typically around 2.5-3 liters including filter) Ignition Ignition System: Points and condenser or early electronic ignition (depending on specific model/year) 🔧 Transmission Standard Type: 5-speed manual gearbox Optional Optional Gearbox: N/A Features Clutch: Wet multi-plate clutch Final Drive: Chain drive 📐 Dimensions Exterior Wheelbase: Refer to manual for specific measurements Seat Height: Refer to manual for specific measurements Weights Dry Weight: Approx. 210-220 kg (463-485 lbs) Wet Weight: Refer to manual for specific measurements 🛡️ Safety Features Ratings Safety Ratings: N/A (Motorcycle from this era typically did not have standardized crash ratings) Active Features Braking System Front: Dual disc brakes (often Grimeca or Fontana, with Brembo calipers becoming more common) Braking System Rear: Single disc brake Passive Features Frame Construction: Steel tube frame 💡 Technology Features Infotainment Infotainment Features: N/A (This is a classic motorcycle from the 1970s, no modern infotainment systems). Driver Assistance Assistance Systems: N/A (No electronic rider aids or driver assistance systems). Connectivity Connectivity Features: N/A 🔧 Maintenance Service Intervals Oil Change Interval: Refer to manual; typically every 3,000-5,000 km (1,800-3,000 miles) or annually. Desmo Valve Adjustment: Refer to manual; critical for performance and engine health, typically at significant mileage intervals (e.g., 10,000-15,000 km). Chain Lubrication: Frequent; every few hundred kilometers or after riding in wet conditions. Fluid Specifications Engine Oil: See engine_specs.oil_type. Consult manual for precise specifications (e.g., Motul, Castrol, Valvoline motorcycle oils in appropriate viscosity). Fork Oil: Refer to manual for type and quantity (e.g., SAE 10W or 15W fork oil). Brake Fluid: DOT 3 or DOT 4 (ensure it is specified in manual for compatible brake systems). Known Issues Desmodromic System: Requires precise adjustment; incorrect settings can lead to poor performance or engine damage. Manual provides critical guidance. Electrical Reliability: Vintage electrical systems can be prone to issues; wiring diagrams in the manual are essential for troubleshooting. Carburetor Tuning: Dell'Orto carburetors require periodic cleaning and precise adjustment for optimal performance. 📚 Vehicle History Brand Heritage Manufacturer Origin: Italy Brand Philosophy: Ducati is renowned for its performance-oriented, desmodromic valve trains and its association with racing...