🏷️ Basic Information Identification Make: Aprilia Model: Pegaso 655 Year: 1998 Codes Engine Code: Likely Rotax 654cc Single-Cylinder (common for this era Pegaso) Chassis Code: RL (common for Aprilia dual-sport models) 👋 Introduction Market Position Description: The Aprilia Pegaso 655 was positioned as a versatile dual-sport motorcycle, blending on-road civility with off-road capability. It appealed to riders seeking a practical and engaging machine for commuting, touring, and light off-road excursions. Competitive Analysis Competitors: Competed with other single-cylinder dual-sport bikes of the era, such as certain Yamaha XT models, Suzuki DR models, and potentially some KTM models. Its Italian heritage and styling set it apart. Key Features Features: Robust single-cylinder engine, long-travel suspension, upright riding position, capable chassis for mixed terrain use. Manual Value Proposition Value: Provides professional-level repair and maintenance information, empowering owners to maintain their '98 Pegaso 655 effectively, reducing reliance on potentially scarce specialized technicians. 📋 Manual Details Coverage Areas Primary Coverage: Aprilia Pegaso 655 (1998 Model Year) Page Count Estimated Page Count: Variable, but comprehensive manuals typically range from 300-600+ pages. Manual Type Type: Full Service Repair Manual Language Language: English Format Digital Format: PDF Delivery Method: Instant Download Print Capability: Full Printable Requirements Software Requirements: Adobe PDF Reader, WinRAR Operating System Compatibility: All Versions of Windows & Mac 📖 Manual Coverage Systems Covered Engine System: Complete overhaul, top-end (cylinder head, valves), bottom-end (crankshaft, connecting rod, pistons), lubrication system, cooling system. Fuel System: Carburetor (likely Dell'Orto PHM 40), fuel tank, fuel lines, fuel pump, fuel filter replacement and cleaning. Transmission System: Gearbox overhaul, clutch assembly (operation, adjustment, replacement), shifting mechanism, transmission oil change and specifications. Electrical System: Wiring diagrams, ignition system (coil, CDI, spark plug), starting system (starter motor, battery), charging system (alternator, regulator/rectifier), lighting, instrumentation, fuses, relays. Braking System: Front and rear brake caliper service, master cylinder overhaul, brake pad replacement, brake line bleeding, brake fluid specifications and replacement intervals. Suspension System: Front forks (oil change, seal replacement, spring replacement), rear shock absorber servicing or replacement, linkage lubrication and adjustment. Wheel And Tire System: Wheel bearing replacement, tire mounting and balancing, recommended tire pressures, wheel specifications. Exhaust System: Exhaust pipe and muffler inspection, gasket replacement, clamp tightening. Bodywork And Frame: Fairing removal and installation, seat, fuel tank mounting, frame inspection, body panel alignment. Diagnostic Systems: Troubleshooting guides, common issues, fault finding procedures, electrical system diagnostics. Procedures Included Maintenance Procedures: Scheduled maintenance, oil and filter changes, air filter cleaning/replacement, spark plug inspection/replacement, chain adjustment, brake fluid flush. Repair Procedures: Step-by-step instructions for all major components, including engine rebuilds, carburetor tuning, suspension overhauls, electrical component replacement. Troubleshooting Procedures: Systematic approach to identifying and resolving mechanical and electrical problems, including common symptoms and their causes. Diagnostic Procedures: Electrical diagnostics with wiring diagrams, component testing, troubleshooting flowcharts. Refurbishment Restoration: Guidance for bringing a used motorcycle back to excellent working order, including parts identification and assembly. Technical Depth Depth: Comprehensive, covering everything from basic maintenance to complete engine and transmission rebuilds. Suitable for professional technicians and experienced DIY mechanics. 📊 Manual Specifications File Format Format: PDF Searchability: Likely searchable text within the PDF for quick information retrieval. Print Quality Printability: All pages printable. Binding Type Binding: Not applicable (Digital PDF) Paper Type Paper Type: Not applicable (Digital PDF) ⚙️ Engine Specifications Primary Engine Engine Type: Four-stroke, single-cylinder, OHC, 4-valve Displacement: 654 cc (approximate) Bore X Stroke: Likely around 100 mm x 84 mm (typical for Rotax 654) Cooling System: Liquid-cooled Compression Ratio: Likely in the range of 9.5:1 to 10.5:1 Performance Horsepower: Approximately 45-50 HP (at ~6500 rpm) Torque: Approximately 50-55 Nm (at ~5000 rpm) Fuel System Carburetor Type: Single Dell'Orto PHM 40 (or similar) Fuel Type: Unleaded gasoline (minimum 95 RON) Lubrication System Oil Type: Motorcycle-specific 4-stroke engine oil, likely SAE 10W-40 or 20W-50, meeting API SG or higher and JASO MA specifications. Oil Capacity: Approximately 2.0 - 2.5 liters (check manual for exact capacity with filter change). 🔧 Transmission Standard Type: 5-speed constant mesh Clutch Type: Wet multi-plate Optional Optional Transmission: N/A (Single configuration for this model) Features Final Drive: Chain drive Transmission Oil Type: Motorcycle-specific gear oil, e.g., SAE 75W-90 or 80W-90, API GL-4. 📐 Dimensions Exterior Length: Varies by specific configuration, typically around 2200 mm Width: Varies by specific configuration, typically around 850 mm Height: Varies by specific configuration, typically around 1350 mm Wheelbase: Approximately 1480 mm Weights Dry Weight: Approximately 165-175 kg Gross Vehicle Weight Rating: Not typically specified for motorcycles in this manner, but rider + luggage capacity is a consideration. Fuel Tank Capacity: Approximately 18 liters 🛡️ Safety Features Ratings Safety Ratings: Motorcycles are not typically assigned NCAP-style safety ratings. Focus is on rider protection through vehicle design and rider awareness. Active Features Braking System: Hydraulic disc brakes front and rear for strong stopping power. Suspension Compliance: Long-travel suspension provides stability and control over...