Engine:
Complete overhaul, disassembly, reassembly, tuning, diagnosis, specific component repair (pistons, crankshaft, valves, camshafts, timing gears)
Fuel System:
Carburetor (Dell'Orto PHF or similar) tuning, cleaning, rebuilding, fuel tank, fuel lines, petcock
Ignition System:
Points ignition system, coil, spark plugs, timing adjustment, wiring diagrams
Transmission:
Clutch operation, gearbox disassembly/reassembly, gear selection, chain drive maintenance
Brakes:
Hydraulic front and rear brake systems, caliper service, master cylinder, brake lines, pad replacement
Electrical System:
Wiring diagrams, lighting, charging system (alternator/generator), starter motor, battery, switches, instrument cluster
Suspension:
Front forks (Marzocchi or similar), rear shock absorbers, swingarm, bearings
Chassis:
Frame, steering head bearings, wheel hubs, spokes, rim maintenance
Bodywork:
Fuel tank, seat, fenders, fairings (if applicable to specific GTS models), mounting points
Routine Maintenance:
Oil changes, filter replacement, chain adjustment, spark plug replacement, brake fluid service, valve clearance checks
Troubleshooting:
Diagnostic charts for common problems related to starting, running, electrical issues, and braking
Component Rebuild:
Detailed step-by-step instructions for rebuilding carburetors, brake calipers, engines, and transmissions
Technical Adjustments:
Carburetor synchronization, ignition timing, valve lash adjustment
Torque Specifications:
Essential torque values for critical fasteners throughout the motorcycle
Depth Of Coverage:
Comprehensive (suitable for professional mechanics and experienced DIY enthusiasts)
Diagnostic Capabilities:
Detailed symptom-to-cause analysis and repair procedures
Rebuild Instructions:
Full engine and gearbox rebuild instructions with detailed diagrams
Engine Type:
Desmodromic L-Twin (90-degree V-twin)
Displacement:
860 cc (864 cc)
Bore X Stroke:
90 mm x 68 mm
Valve Actuation:
Desmodromic valve control
Cooling System:
Air-cooled
Horsepower Estimated:
Approx. 60-65 hp @ 6500 rpm (varies by specific model/tune)
Torque Estimated:
Approx. 70-75 Nm @ 5000 rpm
Carburetor Type:
Dual Dell'Orto PHF 36mm (or similar)
Fuel Type:
Unleaded gasoline (premium recommended)
Engine Oil Type:
SAE 20W-50 or 10W-40 (API SG or higher)
Engine Oil Capacity:
Approx. 2.5 - 3.0 liters (with filter change)
Wheelbase:
Approx. 1400 mm (55.1 inches)
Seat Height:
Approx. 770 mm (30.3 inches)
Dry Weight:
Approx. 190-200 kg (419-441 lbs) (varies by model)
Fuel Tank Capacity:
Approx. 16-18 liters (4.2-4.7 US gallons)
Front Wheel Size:
18 inch
Front Tire Size:
e.g., 3.50 - 18 or 100/90 - 18
Rear Tire Size:
e.g., 4.00 - 18 or 120/90 - 18
Front Brake Type:
Single disc brake (often Brembo)
Rear Brake Type:
Single disc brake
Oil Change Interval:
Every 3,000-5,000 km (1,800-3,000 miles) or annually
Valve Clearance Check Interval:
Every 6,000-10,000 km (3,700-6,200 miles)
Chain Lubrication And Adjustment:
Every 500-1000 km (300-600 miles) or after riding in wet conditions
Spark Plug Replacement:
Every 10,000-15,000 km (6,200-9,300 miles)
Brake Fluid Type:
DOT 3 or DOT 4 (check manual for specific recommendation)
Common Wear Items:
Desmodromic valve lifters, camshafts, clutch plates, electrical components (due to age)
Carburetor Issues:
Diaphragm perishing, jet block wear, synchronization drift
Electrical Reliability:
Wiring harness degradation, stator/rotor issues, rectifier/regulator failures are common on bikes of this age
Desmo Adjustment:
Requires precise adjustment; out-of-spec clearance can lead to poor running or valve damage.
Brand Origin:
Italian motorcycle manufacturer known for performance and racing heritage
Development Context:
Evolution from the earlier 750 Sport and GT models, designed by Fabio Taglioni.
Key Distinctions 860:
Larger displacement, revised styling, more user-friendly than predecessors.
Significance:
A pivotal model in Ducati's V-twin lineage, bridging classic design with increased performance.
