🏷️ Basic Information

Make:

Aprilia

Model:

MY660

Year:

2003

Engine Code Prefix:

M660

👋 Introduction

Target Audience:

Aprilia motorcycle owners, independent repair shops, and enthusiasts seeking in-depth engine and gearbox maintenance and repair knowledge for the MY660 model.

Value Proposition:

Provides specialized, detailed information essential for maintaining and repairing the core powertrain of the Aprilia MY660, offering a cost-effective alternative to dealership service for mechanical tasks.

Manual Features:

Instant download convenience, no shipping costs, immediate access to critical technical data for engine and gearbox.

📋 Manual Details

Primary Coverage:

Engine Service and Repair

Secondary Coverage:

Gearbox

Total Pages:

175

Type:

Engine Manual Book / Engine Service Manual

Language:

English

Digital Format:

PDF

📖 Manual Coverage

Engine Systems:

Engine overhaul, disassembly, assembly, lubrication, cooling, fuel delivery, ignition, exhaust, emissions control, starter system, charging system.

Gearbox Systems:

Gearbox disassembly, assembly, inspection, lubrication, shifting mechanisms, clutch integration.

Maintenance Procedures:

Scheduled maintenance, oil changes, filter replacements, spark plug replacement, valve clearance adjustment, chain lubrication, coolant checks.

Repair Procedures:

Complete engine rebuild, piston and ring replacement, cylinder head repair, crankshaft and connecting rod service, gearbox component replacement, clutch service.

Diagnostic Procedures:

Troubleshooting common engine and gearbox faults, diagnostic charts, error code interpretation (if applicable).

Depth:

Comprehensive, covering from basic checks to full engine and gearbox overhaul and rebuild.

📊 Manual Specifications

File Type:

PDF (Portable Document Format)

Printability:

High-resolution, suitable for printing clear, legible pages.

Binding Format:

Digital Download (PDF)

Digital Paper Simulation:

Simulated by PDF pages, optimized for screen viewing and printing.

⚙️ Engine Specifications

Engine Type:

Liquid-cooled, 4-stroke, Parallel-twin cylinder engine.

Displacement:

Approx. 659cc (specific bore and stroke details likely within the manual).

Estimated Horsepower:

Likely in the range of 70-80 HP (specific figures available in the manual).

Estimated Torque:

Specific torque figures expected within the manual.

Fuel Induction:

Electronic Fuel Injection (EFI) system, likely with ride-by-wire throttle control.

Fuel Type Recommendation:

Unleaded gasoline (octane rating specified in manual).

🔧 Transmission

Gearbox Type:

6-speed constant mesh sequential gearbox.

Clutch Type:

Wet multi-plate clutch, likely with assist and slipper function.

Gear Ratios:

Detailed gear ratios for all six speeds and final drive ratio are expected to be provided.

Gearbox Oil Specification:

Specific API GL-4 or GL-5 transmission oil grade and viscosity (e.g., 75W-90 or 10W-40) will be detailed in the manual.

📐 Dimensions

Frame Type:

Aluminum twin-spar frame (typical for Aprilia performance bikes).

Dry Weight:

Specific dry weight will be detailed in the manual; typically around 180-200 kg for this class of motorcycle.

🛡️ Safety Features

Braking System:

Dual front disc brakes with radial-mount calipers and a single rear disc brake. ABS might be an optional feature depending on the specific model variant, details expected in the manual.

Lighting:

Halogen or LED headlight, taillight, and turn signals.

💡 Technology Features

Instrument Cluster:

Digital instrument cluster displaying speed, RPM, gear position, fuel level, trip meters, and warning lights. Advanced models might include connectivity features.

Electronic Aids:

Traction Control System (APR C), Cornering ABS (if equipped), multiple ride modes (e.g., Sport, Road, Custom) are common on Aprilia models of this era, details will be in the manual.

Optional Connectivity:

Some variants might offer Bluetooth connectivity for smartphone integration via an accessory module, though this is less common for a 2003 model year and more likely on later iterations.

🔧 Maintenance

Oil Change Interval:

Typically every 5,000 - 10,000 km or annually, with specific intervals detailed in the manual.

Valve Clearance Check:

Often at 10,000 - 20,000 km, with precise intervals documented in the manual.

Engine Oil Type:

Likely a semi-synthetic or fully synthetic 10W-40 or 15W-50 motorcycle-specific engine oil meeting JASO MA/MA2 standards.

Coolant Type:

Ethylene glycol-based antifreeze coolant, typically a 50/50 mix with distilled water, meeting specific Aprilia recommendations.

Brake Fluid Type:

DOT 4 or DOT 5.1 brake fluid, as specified by Aprilia.

Potential Issues:

While the manual is for 2003, common early model issues might relate to early electronic gremlins, clutch lever feel, or specific engine component wear if maintenance is neglected. The manual will address proper procedures to mitigate these.

📚 Vehicle History

Brand Focus:

Aprilia is renowned for its sporting heritage, particularly in motorcycle racing, and applies this DNA to its road-going models, emphasizing performance and handling.

Platform Introduction:

The MY660 platform represents Aprilia's entry into the popular middleweight parallel-twin segment, offering a blend of performance, technology, and Italian design.

Manufacturing Location:

Typically manufactured in Italy, Aprilia's home country.

🏆 Awards & Recognition

Segment Recognition:

The Aprilia MY660 platform has generally been well-received for its performance, handling, and engine character, often lauded as a strong competitor in its displacement class by automotive media.