The Cagiva T4, produced in 1987, is a versatile dual-sport motorcycle designed for riders who seek capability on both paved roads and light off-road trails. Featuring a steel tubular frame and long-travel suspension, the T4 was engineered for ruggedness and adaptability. It was available with either a 350cc or 500cc air-cooled, four-stroke, single-cylinder engine, offering a balance of performance and simplicity. With its Italian heritage and focus on practicality, the T4 competed in a segment that included notable models from Yamaha, Honda, Suzuki, and BMW, positioning itself as a durable and functional choice for adventure touring. This Service Repair Manual provides comprehensive guidance for the Cagiva T4 models, covering essential maintenance, repair, and technical information. It details procedures for engine mechanicals, fuel and ignition systems, transmission, drivetrain, suspension, braking, and electrical systems. The manual includes routine maintenance schedules, troubleshooting guides for common issues, and step-by-step instructions for major repairs and component replacements. With its focus on diagnostic capabilities and rebuild information, this English-language manual is an indispensable resource for owners and technicians aiming to maintain the optimal performance and longevity of their 1987 Cagiva T4. 🏷️ Basic Information Identification Make: Cagiva Model: T4 Year: 1987 Engine Variants: 350cc, 500cc Codes Model Codes: T4 350, T4 500 👋 Introduction Market Position Motorcycle Segment: Dual-sport / Adventure Touring motorcycle Target Audience: Riders seeking a versatile machine for on-road and light off-road use, with an emphasis on ruggedness and simplicity. Competitive Analysis Key Competitors 1987: Yamaha XT600, Honda Transalp, Suzuki DR600, BMW G/S series Key Features Frame Type: Steel tubular frame Engine Configuration: Single-cylinder, four-stroke Suspension Setup: Long-travel suspension for off-road capability Braking System Front: Disc brake Braking System Rear: Drum brake (common for the era, though some variants might have disc) Fuel Capacity Liters: Approximately 17-20 liters (typical for the class) 📋 Manual Details Coverage Areas Manual Type: Service Repair Manual Language: English Format: PDF Download Page Count Estimated Page Count: Likely 200-400 pages (typical for this era and type of manual) 📖 Manual Coverage Systems Covered Engine Mechanical: Detailed disassembly, inspection, and reassembly of the 350cc and 500cc engines, including cylinder head, pistons, crankshaft, connecting rods, valve train, and lubrication system. Fuel System: Carburetor overhaul and adjustment (likely Mikuni or Dell'Orto), fuel tank maintenance, fuel pump operation, and fuel line routing. Ignition System: CDI ignition system components, troubleshooting, timing specifications, and spark plug selection. Transmission And Drivetrain: Gearbox disassembly and reassembly, clutch operation and adjustment, chain drive maintenance and adjustment, and rear hub servicing. Suspension System: Front fork disassembly, seal replacement, oil levels, and spring specifications. Rear shock absorber inspection and replacement. Braking System: Front and rear brake caliper service, master cylinder overhaul, brake pad replacement, brake fluid specifications, and bleeding procedures. Disc and drum brake systems. Electrical System: Wiring diagrams, component testing (starter motor, alternator/generator, lights, switches), battery maintenance, and fuse identification. Chassis And Frame: Frame inspection, steering head bearing service, and wheel bearing maintenance. Bodywork And Trim: Fairing and body panel removal/installation procedures, seat maintenance, and luggage rack fitting. Procedures Included Routine Maintenance: Oil change intervals and fluid capacities, filter replacement (oil, air), chain lubrication and tensioning, brake adjustment, and general inspection points. Troubleshooting: Diagnostic flowcharts and symptom-based troubleshooting for common engine, electrical, and mechanical issues. Major Repairs: Complete engine rebuild procedures, transmission overhaul, suspension fork rebuild, and brake system component replacement. Component Replacement: Step-by-step guides for replacing parts such as clutch plates, spark plugs, brake pads, fork seals, and electrical switches. Technical Depth Diagnostic Capabilities: Detailed diagnostic procedures focusing on identifying the root cause of malfunctions, rather than just symptom masking. Rebuild Information: Comprehensive instructions for complete engine and transmission rebuilds, including necessary clearances, torque specifications, and part interchangeability (where applicable). Performance Tuning: Basic tuning recommendations for carburetors and ignition timing to optimize performance. 📊 Manual Specifications File Format File Type: PDF Searchability: Likely text-searchable if scanned with OCR, enhancing usability. Print Quality Image Resolution: Dependent on original scan quality, but aims for clear diagrams and text. Binding Type Binding For Digital: N/A (Digital Format) Paper Type Paper For Digital: N/A (Digital Format) ⚙️ Engine Specifications Primary Engine Engine Type 350: Air-cooled, four-stroke, single-cylinder Bore Stroke 350: Specific dimensions not provided, but typical for a 350cc single Displacement 350 Cc: ~350cc Engine Type 500: Air-cooled, four-stroke, single-cylinder Bore Stroke 500: Specific dimensions not provided, but typical for a 500cc single Displacement 500 Cc: ~500cc Performance Horsepower 350 Approx: 25-30 HP (estimated) Horsepower 500 Approx: 30-35 HP (estimated) Torque Approx: Torque figures would vary between 350 and 500cc models, generally in the 25-35 Nm range. Fuel System Carburetor Type: Likely single Mikuni VM or Dell'Orto PHM carburetors Fuel Type: Unleaded gasoline Fuel Delivery: Gravity feed from fuel tank 🔧 Transmission Standard Transmission Type: 5-speed constant mesh gearbox Optional Optional Transmission: N/A (Typically standard across the model range) Features Clutch...