Segment:
Dual-sport / Adventure Touring motorcycle
Target Audience:
Riders seeking a versatile motorcycle for commuting, touring, and light off-road use.
Key Competitors:
BMW F650 Funduro, Yamaha TDM850, Honda Transalp.
Engine Basis:
Robust Rotax single-cylinder engine, known for reliability and torque.
Versatility:
Combination of road comfort and modest off-road capability.
Design Philosophy:
Practical, user-friendly, and durable for everyday use and longer journeys.
Engine:
Complete disassembly, inspection, repair, and reassembly of the Rotax 654cc engine.
Fuel System:
Carburetor (Dell'Orto PHM 40) tuning, maintenance, and overhaul; fuel pump and filter service.
Ignition System:
CDI ignition system troubleshooting, component testing, and timing adjustments.
Cooling System:
Radiator, fan, thermostat, water pump, and coolant flow diagnostics and service.
Exhaust System:
Exhaust pipe and muffler inspection and replacement.
Transmission:
Clutch operation and adjustment, gearbox disassembly, inspection, and reassembly.
Drivetrain:
Chain and sprocket inspection, adjustment, and replacement; rear hub service.
Brakes:
Front and rear brake system overhaul, including caliper service, master cylinder maintenance, brake line replacement, and bleeding procedures.
Suspension:
Front telescopic forks (e.g., Marzocchi) disassembly, seal replacement, oil level and type, and rear monoshock absorber service and adjustment.
Steering:
Steering head bearing inspection, adjustment, and replacement.
Wheels And Tires:
Wheel bearing inspection and replacement, tire pressure recommendations, and rim specifications.
Electrical System:
Wiring diagrams, battery maintenance, charging system (stator, rectifier/regulator), starter motor, lighting circuits, and instrument cluster diagnostics.
Frame And Bodywork:
Frame inspection, fairing and panel removal/installation, seat, and luggage rack service.
Maintenance:
Scheduled maintenance tasks, oil changes, filter replacements, chain lubrication, spark plug service, valve clearance adjustment.
Troubleshooting:
Diagnostic procedures for common starting issues, running problems, electrical faults, and component failures.
Repair:
Step-by-step instructions for component repair and replacement for all major systems.
Rebuild:
Complete tear-down and reassembly instructions for the engine and major components.
Diagnostics:
Detailed diagnostic flowcharts and component testing methods.
Depth Level:
Comprehensive (from basic maintenance to full engine/transmission rebuilds)
Diagrams And Illustrations:
Includes detailed part diagrams and exploded views for component identification and reassembly reference.
Torque Specifications:
Specific torque values for critical fasteners across all major systems.
Engine Type:
Single-cylinder, four-stroke
Displacement:
654 cc (654 cubic centimeters)
Bore X Stroke:
100 mm x 83.7 mm (approximate)
Compression Ratio:
9.1:1 (typical for this engine)
Valve Train:
SOHC, 4 valves per cylinder (operated by rockers)
Cooling System:
Liquid-cooled
Horsepower:
Approximately 48-50 HP at 6,500 RPM (varies slightly by market/tuning)
Torque:
Approximately 59 Nm (43.5 lb-ft) at 5,000 RPM (typical)
Carburetor Model:
Dell'Orto PHM 40 (single carburetor)
Fuel Type:
Unleaded gasoline (Octane rating as specified by Aprilia, typically 91 or higher)
Oil Type Capacity:
See 'fluid_specifications' for recommended oil type and capacity. Typically around 2.2-2.5 liters.
Safety Ratings:
N/A (Motorcycles are not typically rated by organizations like NHTSA in the same way as cars).
Braking System:
Dual disc front brakes, single disc rear brake. Hydraulic actuation.
Suspension Stability:
Adjustable front and rear suspension contributing to handling and stability.
Lighting:
Headlight, taillight, brake lights, turn signals for visibility.
Chassis Construction:
Steel frame designed for stability and rider control.
Oil Change Interval:
Typically every 4,000-6,000 km (2,500-3,750 miles) or annually, whichever comes first. (Refer to manual for precise interval).
Valve Clearance Check:
Every 8,000-12,000 km (5,000-7,500 miles). (Refer to manual for precise interval).
Chain Maintenance:
Lubricate and adjust chain every 1,000 km (600 miles) or as needed. Check for wear and proper tension.
Engine Oil Type:
Refer to manual, but typically a high-quality SAE 10W-40 or 15W-50 motorcycle-specific oil meeting API SG or higher, JASO MA specifications.
Engine Oil Capacity:
Approximately 2.2 - 2.5 Liters (2.3 - 2.6 US Quarts) with filter change. (Verify in manual).
Coolant Type:
Ethylene glycol-based antifreeze, mixed with distilled water (typically 50/50 ratio). Refer to manual for specific Aprilia recommendations.
Brake Fluid Type:
DOT 4 brake fluid.
Fork Oil Type:
Refer to manual for specific viscosity (e.g., SAE 7.5W or 10W) and quantity.
Electrical Connections:
Corrosion or loose connections in the wiring harness can lead to intermittent electrical problems.
Carburetor Tuning:
Dell'Orto carburetors can require periodic adjustment and cleaning to maintain optimal performance and fuel efficiency.
Charging System:
Rectifier/regulator failures can occur, leading to battery charging issues.
Clutch Slippage:
With high mileage, clutch plates may wear, leading to slippage.
Fork Seals:
Front fork seals can leak over time, requiring replacement.
Manufacturer:
Aprilia is an Italian manufacturer with a long history in motorcycle racing and production, known for performance and innovation.
Pegaso Line:
The Pegaso line was Aprilia's entry into the dual-sport market, offering a balance of on-road comfort and off-road versatility. The 650cc single-cylinder engine, often sourced from Rotax, proved to be a popular and reliable choice.
Production Years:
The Aprilia Pegaso 650 was produced from the early 1990s through the early 2000s, with various updates and engine configurations over its lifespan. The 1997 model represents a specific iteration within this generation.
Manufacturing Location:
Italy
