Target Audience:
Ducati 860GT owners, independent motorcycle mechanics, enthusiasts seeking to maintain or repair their vintage Ducati.
Manual Advantage:
Provides comprehensive, manufacturer-level detail for a vintage Italian motorcycle, often scarce in the aftermarket. PDF format offers instant access and portability.
Accessibility:
Instant digital download, accessible on multiple devices, usable on the go for field repairs.
User Friendliness:
Written for both novice and experienced mechanics, with clear text and detailed illustrations.
Engine:
Complete overhaul, diagnosis, tuning, lubrication, cooling system, fuel system (carburetors, fuel lines), ignition system.
Transmission:
Clutch operation, gearbox disassembly and assembly, gear shifting mechanism, lubrication.
Chassis:
Frame inspection and repair, suspension (front fork, rear shock absorbers), steering head bearings, wheels, and spokes.
Brakes:
Front and rear brake systems (drum/disc, depending on specific configuration), brake fluid, caliper/master cylinder service, brake line maintenance.
Electrical System:
Wiring diagrams, battery, charging system (alternator, regulator), lighting (headlight, taillight, indicators), ignition coil, starter motor, switches.
Fuel System:
Carburetor identification and adjustment (likely Dell'Orto or similar), fuel tank, fuel petcock, fuel lines.
Bodywork And Trim:
Fairings, fuel tank, seat, fenders, instruments, control levers.
Maintenance:
Regular servicing, oil changes, filter replacements, chain adjustment, brake adjustments, valve clearance checks, carburetor synchronization.
Troubleshooting:
Diagnostic procedures for common and uncommon faults, step-by-step problem resolution guidance.
Repair:
Detailed instructions for disassembly, component replacement, and reassembly of all major vehicle systems.
Rebuild:
Comprehensive guides for engine, transmission, and carburetor overhauls.
Diagnostic Capabilities:
Advanced diagnostic procedures, component testing, and electrical troubleshooting.
Repair Detail:
Step-by-step instructions with exploded diagrams for complete disassembly and reassembly.
Specifications:
Includes all necessary torque values, clearances, fluid specifications, and electrical resistance values.
Searchability:
Likely text-searchable PDF, allowing for quick information retrieval.
Image Quality:
High-quality diagrams and illustrations as stated, crucial for clear repair guidance.
Binding:
Not applicable (Digital Download)
Paper Quality:
Not applicable (Digital Download)
Engine Type:
Air-cooled, L-twin (V-twin), 4-stroke
Displacement:
Approximately 864 cc
Bore X Stroke:
Likely around 83 mm x 80 mm (specific figures can vary, manual will confirm)
Valve Train:
Desmodromic (Ducati's signature valve actuation system) or conventional overhead valves.
Compression Ratio:
Typically around 8.5:1 to 9.5:1 (manual will specify exact ratio)
Horsepower:
Around 60-70 hp at 6500-7500 RPM (typical for the era and engine size)
Torque:
Around 70-75 Nm (49-55 lb-ft) at 5000-6000 RPM (typical for the era)
Carburetor Type:
Likely twin Dell'Orto PHM 38 or similar (manual will confirm specific model and jetting)
Fuel Delivery:
Gravity feed from fuel tank via fuel petcock.
Oil Capacity:
Approximately 2.5 - 3.0 liters (manual will specify exact capacity and oil type)
Oil Type:
Viscosity and specification (e.g., SAE 20W-50, motorcycle-specific)
Transmission Type:
5-speed constant mesh, sequential gearbox
Clutch Type:
Dry, multi-plate clutch
Drive Type:
Shaft drive (bevel gear final drive), a less common feature for Ducati's sportier models of that era, contributing to its touring GT designation.
Gear Ratios:
Specific gear ratios for each of the 5 speeds will be detailed in the manual.
Transmission Oil Capacity:
Manual will specify the type and capacity of transmission oil.
Wheelbase:
Approximately 1450 mm - 1500 mm (manual will provide precise measurement)
Seat Height:
Around 780 mm - 820 mm (manual will specify)
Dry Weight:
Approximately 200 kg - 220 kg (manual will provide exact figure)
Gross Vehicle Weight Rating:
Manual will list GVWR, important for load capacity.
Crash Test Results:
Not applicable for motorcycles of this era in the same way as automobiles.
Braking System:
Typically a front disc brake and rear drum brake on most 860GT variants, though some later models or specific markets might have had dual discs. Manual will detail exact configuration.
Frame Construction:
Steel tube frame, designed for stability and rigidity.
Instrumentation:
Analog speedometer, tachometer, odometer, trip meter, and indicator lights (oil pressure, turn signals, high beam). Manual will detail instrument cluster functions.
ABS:
None (not available on motorcycles of this era).
Bluetooth:
None (not applicable).
Oil Change Interval:
Typically every 3,000-5,000 km or annually, with filter changes recommended at each oil change (manual will provide precise interval).
Valve Adjustment Interval:
Regular checks (e.g., every 6,000-10,000 km) are critical for desmodromic or conventional valve trains. Manual will specify.
Engine Oil Specification:
e.g., API SG, JASO MA, SAE 20W-50 (manual will specify exact grade and API rating)
Brake Fluid Specification:
DOT 3 or DOT 4 (manual will specify)
Common Wear Items:
Carburetor synchronization and tuning, wear in desmodromic valve components (if applicable), electrical connections, clutch plates, and brake components.
Reliability Factors:
Like many vintage Italian motorcycles, requires diligent maintenance. Issues can arise from aging rubber components, electrical gremlins, and carburetor tuning.
Manufacturer Focus:
Ducati is renowned for its high-performance motorcycles, particularly those with L-twin engines and sporting heritage.
Predecessors:
The 860GT followed earlier Ducati V-twins like the 750GT and 750 Sport, evolving the design and capacity.
Design Philosophy:
The 'GT' designation signifies a Grand Touring model, suggesting a focus on comfort and longer-distance riding compared to Ducati's sportier variants, though still retaining performance characteristics.
Production Years:
Circa 1975-1979
