🏷️ Basic Information Identification Make: Aprilia Model: RS250 Model Code: GS Generation Generation Name: First Generation Generation Years: 1995-2002 Codes Chassis Code Range: GSB00A 👋 Introduction Market Position Market Segment: High-performance 250cc two-stroke sportbike. Target Audience: Enthusiast owners, DIY mechanics, and track day participants seeking in-depth knowledge for maintenance and repair. Competitive Analysis Competitors: Yamaha YZF-R25, Honda CBR250RR (MC28), Kawasaki ZXR250. Unique Selling Proposition: The RS250 is renowned for its potent V-twin two-stroke engine, advanced chassis derived from Suzuki RG-V race bikes, and aggressive styling, making it a highly sought-after classic performance machine. Key Features Engine Type: Liquid-cooled, 90-degree V-twin, two-stroke. Suspension Technology: Often equipped with premium components like fully adjustable Öhlins front forks and rear shock absorbers, or equivalent Marzocchi/Boge units, offering exceptional ride quality and adjustability. Braking System: High-performance dual front discs with multi-piston calipers. 📋 Manual Details Coverage Areas Covered Years: 1995, 1996, 1997 Regions: Global (based on technical specifications and common service procedures) Page Count Estimated Page Count: 400+ Manual Type Type: Workshop Repair Manual / Service Manual Language Language: English Format Format: Digital Download (PDF/Equivalent) 📖 Manual Coverage Systems Covered Engine Systems: Engine disassembly/assembly, top-end (cylinder head, cylinders, pistons), bottom-end (crankshaft, connecting rods), lubrication system, cooling system (radiator, water pump), fuel delivery (carburetors, fuel lines), ignition system, exhaust system. Transmission Drivetrain: Gearbox (gear selection, shifting mechanism), clutch (operation, adjustment, replacement), final drive (chain, sprockets). Chassis Suspension: Front forks (Öhlins/Marzocchi variants, internal components, adjustment), rear shock absorber (Öhlins/Boge variants, adjustment, linkage), swingarm, bearings, frame inspection and repair. Brakes: Front and rear brake systems (hydraulic circuits, master cylinders, calipers, discs, fluid replacement, bleeding), brake pad replacement. Electrical System: Wiring diagrams, battery, charging system (alternator, regulator/rectifier), starter motor, lighting system (headlight, taillight, indicators), instrumentation, ignition control unit (ECU). Bodywork Trim: Fairings, seat, fuel tank, handlebars, levers, footpegs, minor bodywork repairs. Procedures Included Routine Maintenance: Oil changes, filter replacements, chain adjustment, spark plug replacement, brake fluid changes, coolant flushes, air filter cleaning/replacement. Troubleshooting: Diagnosis of common starting issues, running problems, electrical faults, braking concerns, and chassis noises. Repair Rebuild: Detailed step-by-step instructions for engine rebuilds, carburetor tuning, suspension component replacement, brake system overhauls, and electrical component diagnosis/replacement. Special Tools: Identification of and instructions for using specialized tools required for specific tasks. Technical Depth Depth: Comprehensive (covers everything from basic maintenance to full engine and chassis rebuilds, including detailed specifications and tolerances). 📊 Manual Specifications File Format Digital Format: PDF (searchable, printable) Print Quality Clarity: Professional quality scans with clear text and legible diagrams. Binding Type Binding: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Code: Rotax 125-derived (though Aprilia developed a specific V-twin variant) Engine Type: Liquid-cooled, 90-degree V-twin, two-stroke. Displacement: 249 cc Bore X Stroke: 54.0 mm x 54.5 mm Compression Ratio: 7.5:1 (approx.) Power Output: Approx. 70 hp (52 kW) @ 10,500 rpm (Euro/US models, may vary slightly by region and tuning). Torque Output: Approx. 37 lb-ft (50 Nm) @ 10,000 rpm (approx.) Valvetrain: APCS (Aprilia Performance Cage System) reed valve induction, power valves (electronically controlled). Fuel System Carburetors: Twin 32 mm Mikuni TM32SS flat-slide carburetors (or equivalent). Fuel Type: Unleaded premium gasoline (minimum 95 RON). Fuel Mixture: Automatic oil injection for two-stroke lubrication. Fuel Tank Capacity: 16 Liters (approx. 4.2 US gallons). 🔧 Transmission Standard Type: 6-speed constant mesh sequential gearbox. Optional Options: N/A (Standard 6-speed) Features Clutch Type: Wet multi-plate clutch, cable-actuated. Final Drive: Chain drive (520 pitch, 108 links typical). 📐 Dimensions Exterior Length: 2,000 mm (approx.) Width: 680 mm (approx.) Height: 1,140 mm (approx.) Wheelbase: 1,360 mm (approx.) Ground Clearance: 130 mm (approx.) Weights Dry Weight: 143 kg (approx.) Wet Weight: 165 kg (approx., fully fueled and ready to ride) Front Tire Size: 120/70 ZR17 Rear Tire Size: 160/60 ZR17 Wheel Bolt Pattern: N/A (Cast wheels, hub mounting) 🛡️ Safety Features Ratings Crash Safety Ratings: N/A (Motorcycle safety is primarily assessed through rider skill and accident avoidance; no formal vehicle crash test ratings like cars). Active Features Braking System Type: Dual front hydraulic disc brakes, single rear hydraulic disc brake. Front Brake Caliper Type: Multi-piston calipers (e.g., Brembo 4-piston). Front Brake Disc Size: 290 mm (approx.) Rear Brake Disc Size: 220 mm (approx.) Suspension Features: Adjustable front forks (preload, compression, rebound), adjustable rear shock absorber (preload, rebound). Passive Features Lighting System: Halogen headlight, LED taillight, incandescent turn signals. Instrumentation: Tachometer, speedometer, temperature gauge, odometer, trip meter, warning lights (oil, neutral, indicators, high beam). 💡 Technology Features Infotainment Infotainment System: N/A (Analog instrumentation typical for the era). Driver Assistance Driver Assistance Systems: N/A (Focus is on mechanical and rider-centric performance). Connectivity Connectivity Features: N/A. Performance Enhancements Power Delivery Control: Electronically controlled power valves (APCS) for optimized torque and power across the rev range. Ignition System: Digital CDI ignition system for precise spark timing. 🔧 Maintenance Service...