🏷️ Basic Information Identification Make: Aprilia Model: Engine MY 660 Product Type: Workshop Service Repair Manual Codes Engine Code Identifier: MY 660 (This is the primary identifier, specific internal codes may exist but are not provided). 👋 Introduction Market Position Positioning: The Aprilia Engine MY 660 is a modern, performance-oriented engine platform, likely found in mid-range sportbikes or naked bikes, requiring specialized technical documentation for maintenance and repair. Competitive Analysis Competitors: Engines from manufacturers like Yamaha (MT-07 platform), Kawasaki (Ninja 650 platform), and KTM (790/890 Duke platforms). Key Features Manual Value Proposition: Provides essential information for owners and technicians to maintain optimal performance, diagnose issues efficiently, and perform repairs accurately, thereby saving on dealership costs. Manual Scope: This manual focuses exclusively on the engine's internal components, systems, and their associated maintenance and repair, providing in-depth technical data. 📋 Manual Details Coverage Areas Language: English Format: Digital (likely PDF, but not explicitly stated) Applicable Models: Primarily covers Aprilia motorcycles utilizing the MY 660 engine platform, such as the Aprilia RS 660 and Aprilia Tuono 660. The manual is engine-centric. Page Count Estimated Page Count: Estimate based on comprehensive workshop manuals for similar Aprilia models, typically 300-600 pages. Manual Type Type: Workshop Service Repair Manual 📖 Manual Coverage Systems Covered Engine Mechanical: Detailed breakdown of all engine components, including cylinder head, pistons, crankshaft, lubrication system, cooling system, valve train, and timing components. Engine Electrical: Ignition system, starting system, charging system, sensors, actuators, and ECU (Engine Control Unit) diagnostics and troubleshooting. Fuel System: Fuel injection system, fuel pump, injectors, fuel pressure regulator, fuel filter, and fuel tank service. Exhaust System: Exhaust manifold, catalytic converter, mufflers, and associated components. Cooling System: Radiator, coolant pump, thermostat, hoses, and cooling fan operation and maintenance. Lubrication System: Oil pump, oil filter, oil passages, and oil pressure monitoring. Throttle Control: Ride-by-wire throttle system, including throttle position sensors, throttle body operation, and related electronic controls. Emission Control: Components related to emission control, such as oxygen sensors and evaporative emission control systems (EVAP). Procedures Included Routine Maintenance: Oil changes, filter replacements, spark plug inspection/replacement, air filter cleaning/replacement, coolant flushes, and chain maintenance. Engine Repair: Top-end rebuilds, bottom-end rebuilds, piston ring replacement, bearing replacement, seal replacement, and gasket replacement. Troubleshooting: Systematic diagnostic procedures for common engine performance issues, error codes, and component failures. Component Disassembly Reassembly: Step-by-step instructions for removing, disassembling, inspecting, repairing, and reassembling all engine and related components. Technical Specifications Data: Torque specifications, clearances, timing marks, and other critical measurements for precise repair and assembly. Diagnostic Trouble Codes: Explanation of Diagnostic Trouble Codes (DTCs), their meaning, and procedures for diagnosis and clearing. Wiring Diagrams: Detailed electrical wiring diagrams for the engine and related systems, essential for electrical troubleshooting. Technical Depth Depth: Comprehensive. Covers everything from basic fluid checks to full engine overhauls and advanced diagnostics. Special Tools: Lists and describes the specialized tools required for specific repair and maintenance procedures, ensuring correct execution. 📊 Manual Specifications File Format Format Details: Likely a high-resolution, searchable PDF. Expect clear diagrams and text. Printable pages are standard for this type of manual. Print Quality Quality: Professional quality, with clear line drawings, schematics, and photographic illustrations where applicable. Binding Type Binding: N/A (Digital format) Paper Type Paper: N/A (Digital format) ⚙️ Engine Specifications Primary Engine Engine Type: Parallel-twin, liquid-cooled, DOHC (likely based on Aprilia's MY660 platform). Displacement: Approximately 659cc (consistent with the '660' designation). Bore X Stroke: Likely around 81mm x 63.9mm (based on Aprilia RS 660 specifications). Compression Ratio: Likely around 13.5:1 (based on Aprilia RS 660 specifications). Performance Horsepower Estimate: Likely in the range of 95-105 hp (specific figures depend on the vehicle application). Torque Estimate: Likely in the range of 65-70 Nm (specific figures depend on the vehicle application). Fuel System Fuel Delivery: Electronic Fuel Injection (EFI) with ride-by-wire throttle control. Fuel Type: Unleaded gasoline, premium octane recommended (e.g., 95 RON). Throttle Body Size: Likely 48mm dual throttle bodies. 🔧 Transmission Standard Transmission Type: 6-speed constant mesh transmission (likely with a slipper clutch). Optional Optional Gearbox: N/A (Typically a single transmission option for a specific model). Features Clutch Type: Wet, multi-plate clutch with assist and slipper function. Quickshifter: May include details on the Aprilia Quick Shift (AQS) system for clutchless upshifts and downshifts, depending on the vehicle application. 📐 Dimensions Exterior Vehicle Platform: This manual covers the ENGINE, so specific vehicle dimensions are not directly provided but the engine is used in models like Aprilia RS 660 and Tuono 660. Engine Mounting: Designed as a stressed member in some chassis configurations, indicating robust engineering and specific mounting procedures. Weights Engine Weight Estimate: Approx. 50-55 kg (dry weight, without fluids). 🛡️ Safety Features Ratings Vehicle Safety Systems: While this is an engine manual, it implies the vehicle it powers will have ABS, traction control, and potentially cornering ABS, all managed by...