Engine Overhaul:
Complete engine disassembly, inspection, repair, and reassembly for the L-twin Desmodromic engine.
Transmission Service:
Inspection, repair, and adjustment of the 5-speed gearbox and clutch assembly.
Fuel System:
Carburetor (Dell'Orto PHF 30 or similar) tuning, maintenance, and rebuilding; fuel tank, petcock, and fuel line service.
Ignition System:
Bosch or Ducati electronic ignition system maintenance, timing adjustments, and component testing.
Electrical System:
Wiring diagrams, lighting, charging system (alternator, battery, regulator), starter motor, and switchgear troubleshooting and repair.
Braking System:
Hydraulic front and rear brake systems, caliper maintenance, fluid bleeding, disc inspection, and pad replacement.
Suspension And Steering:
Front fork (Ceriani or Marzocchi) and rear shock absorber maintenance, adjustment, and overhaul; steering head bearing service.
Chassis And Frame:
Frame inspection, tightening of fasteners, and component mounting procedures.
Bodywork And Trim:
Fender, fuel tank, seat, and fairing (if applicable) removal, installation, and care.
Routine Maintenance:
Oil changes, filter replacements, spark plug service, chain adjustment, and general inspection.
Troubleshooting Guides:
Diagnostic procedures for common starting, running, and electrical issues.
Component Overhaul:
Detailed steps for rebuilding carburetors, brake calipers, and engine top-end components.
Adjustment Procedures:
Valve clearance adjustment (Desmodromic system), ignition timing, and carburetor synchronization.
Wheel And Tire Service:
Wheel bearing inspection, spoke tensioning, tire mounting/demounting, and tube replacement.
Depth Of Information:
Comprehensive workshop level, suitable for experienced mechanics and dedicated enthusiasts.
Diagnostic Capability:
Detailed troubleshooting charts and explanations of how systems function.
Repair Procedures:
Step-by-step instructions for major repairs and component replacements.
Specifications And Tolerances:
Precise torque values, clearances, and critical measurements.
Engine Type:
Air-cooled, L-twin (V-twin), 4-stroke, Desmodromic valve actuation
Bore X Stroke:
97 mm x 78 mm (typical for 860cc models)
Compression Ratio:
8.3:1 (typical)
Horsepower:
Approx. 60-65 hp @ 6500 rpm (varies by specific model and tuning)
Torque:
Approx. 70 Nm @ 5000 rpm (varies)
Carburetion:
Twin Dell'Orto PHF 30A or similar 30mm constant-velocity carburetors
Fuel Type:
Unleaded gasoline (octane rating suitable for performance engines, e.g., 95 RON)
Oil Capacity:
Approx. 2.5 - 3.0 Liters
Oil Specification:
SAE 20W-50 or SAE 15W-50 motorcycle specific engine oil, meeting API SG or higher (refer to manual for exact spec)
Desmodromic System:
Key feature: Mechanical valve actuation ensuring positive opening and closing of valves.
Oil Change Interval:
Typically every 3,000 - 5,000 km or annually, whichever comes first (refer to manual).
Desmo Service:
Regular inspection and adjustment of Desmodromic valve clearances are critical, typically every 5,000 - 10,000 km.
Brake Fluid:
DOT 3 or DOT 4 hydraulic brake fluid (refer to manual for exact spec).
Fork Oil:
Specific weight and type of fork oil recommended in manual (e.g., SAE 10W).
Desmo Adjustment:
Valve clearance requires precise adjustment; failure to do so can lead to poor performance or damage.
Electrical Reliability:
Older electrical components may require refurbishment or upgrading for improved reliability.
Carburetor Tuning:
Dell'Orto carburetors require periodic cleaning, synchronization, and jetting adjustments.
Frame Cracks:
While rare, inspection for stress cracks around frame welds is advisable for vintage bikes.
Part Sourcing:
Original parts can be scarce; specialist suppliers and reproduction parts are often utilized.
Ducati Legacy:
Ducati is renowned for its performance-oriented motorcycles, racing heritage, and unique L-twin engine configurations.
Predecessor:
The 860 GT/GTS succeeded earlier Ducati V-twins, evolving the design and performance.
Design Philosophy:
Designed by Fabio Taglioni, featuring a distinctive styling and emphasis on V-twin performance.
Manufacturing Location:
Bologna, Italy
Key Distinction:
Represents a significant step in Ducati's L-twin development, bridging the gap to later iconic models.
