This manual provides comprehensive service and repair information for the 860 GTS, produced between 1976 and 1979. As a first-generation model, the 860 GTS represents a significant part of heritage, known for its air-cooled, 90-degree V-twin engine featuring desmodromic valve actuation and distinctive styling by Paolo Martin. This motorcycle, with its robust engineering and Italian craftsmanship, offers a unique riding experience, emphasizing torque and character. Its 797 cc displacement and 5-speed gearbox, coupled with a dry multi-plate clutch, are key components for understanding its performance and maintenance requirements. This factory service repair manual is designed to assist owners and technicians in maintaining and repairing the 860 GTS. It covers a wide array of topics, including detailed engine disassembly and assembly, fuel system maintenance and tuning, clutch and transmission servicing, brake system overhauls, suspension and steering adjustments, and the complete electrical system. The manual offers step-by-step procedures, troubleshooting guides, and technical specifications, supported by hundreds of photos and illustrations to ensure clarity and accuracy. Its comprehensive nature makes it an invaluable resource for everything from routine maintenance, such as oil changes and chain adjustments, to complex engine rebuilds and electrical diagnostics. 🏷️ Basic Information Identification Make: Ducati Model: 860 GTS Model Generation: First Generation Production Years Covered: 1976, 1977, 1978, 1979 Codes Chassis Code Prefix: 860 👋 Introduction Market Position Target Audience: Ducati 860 GTS owners and independent mechanics seeking detailed repair and maintenance information. Competitive Analysis Advantage Over Print: Cost-effective, easily accessible, searchable, printable on demand, and more durable than old paper manuals. Key Features Completeness: Official full factory service repair manual with comprehensive coverage for all styles. Usability: Step-by-step instructions, numerous photos and illustrations for clarity. Accessibility: Compatible with Windows and Mac, viewable on PCs, laptops, smartphones, and tablets via web browser. 📋 Manual Details Coverage Areas Primary Coverage: Full Service and Repair Secondary Coverage: Maintenance, Troubleshooting, Diagnostics, Reassembly Page Count Estimated Pages: Hundreds (exact number not specified, but described as comprehensive) Manual Type Type: Factory Service Repair Manual (FSM) Language Language: English Format Format: PDF 📖 Manual Coverage Systems Covered Engine Overview: Complete engine disassembly, assembly, tuning, and diagnostics. Fuel System: Carburetor tuning and rebuilding (likely Dell'Orto or similar), fuel pump, fuel lines, fuel tank maintenance. Cooling System: Air cooling system inspection, fin cleaning, and related components. Engine Top End: Cylinder head, valves, camshafts, timing, piston and ring replacement, cylinder service. Clutch: Clutch plate replacement, pressure plate adjustment, clutch cable service, hydraulic clutch system (if applicable). Engine Lubrication: Oil pump service, oil filter replacement, oil drain and fill procedures, oil passages. Crankshaft Transmission: Crankshaft inspection and balancing, gearbox disassembly and reassembly, gear inspection, shift mechanism service. Wheels Tires: Wheel bearing service, spoke tensioning (if applicable), tire mounting and balancing, rim specifications. Final Drive: Chain and sprocket inspection, adjustment, and replacement; shaft drive maintenance (if applicable). Brakes: Brake caliper service, brake pad replacement, brake fluid flush and bleeding, master cylinder inspection, brake disc specifications. Suspension: Front fork service (oil change, seal replacement), rear shock absorber service and adjustment, linkage maintenance. Steering: Headset bearing service, steering damper adjustment (if equipped), handlebar replacement. Frame: Frame inspection for cracks, weld integrity, mounting point checks, fastener torque specifications. Electrical System: Wiring diagrams, ignition system troubleshooting, lighting circuits, battery maintenance, starter motor, alternator. Appendix: Specifications, torque values, wiring schematics, troubleshooting charts. Procedures Included Routine Maintenance: Oil changes, filter replacements, chain adjustments, brake checks, spark plug replacement. Troubleshooting: Step-by-step diagnostic procedures for common and uncommon issues. Engine Rebuild: Complete engine teardown, component inspection, part replacement, and reassembly guidance. Suspension Overhaul: Front fork and rear shock absorber servicing, including seal and fluid replacement. Electrical Diagnostics: Tracing electrical faults, testing components, and understanding wiring diagrams. Brake System Service: Pad replacement, caliper overhauls, bleeding procedures, and fluid management. Transmission Repair: Gearbox disassembly, inspection of gears and bearings, and reassembly. Technical Depth Depth: Comprehensive from basic maintenance to complete engine and component overhaul, suitable for DIY enthusiasts and professional mechanics. Visual Aid: Hundreds of photos and illustrations guiding each procedure. 📊 Manual Specifications File Format File Type: Adobe PDF Searchability: Likely text-searchable if properly digitized. Print Quality Printability: Fully printable, allowing users to print specific pages or the entire manual. Binding Type Binding: Not applicable (digital format) Paper Type Paper Quality: Not applicable (digital format) ⚙️ Engine Specifications Primary Engine Engine Type: Air-cooled, 90-degree V-twin (L-twin) Displacement Cc: 797 cc (for standard 860 models, GTS likely similar or variant) Bore X Stroke: 78 mm x 84 mm (typical for 860 series) Valve Train: Desmodromic valve actuation Power Delivery: Known for its torque and character rather than peak horsepower. Fuel System Carburetion: Dual Dell'Orto PHF 32A carburetors (common fitment for this era) Fuel Type: Unleaded gasoline (lead-free fuel recommended for engine longevity) 🔧 Transmission Standard Type: 5-speed constant mesh gearbox Clutch Type: Dry multi-plate clutch Features Final Drive Type: Chain...