🏷️ Basic Information Identification Make: Aprilia Model: RS250 Year: 1994 Codes Chassis Code: AP06 Engine Code: Rotax 257 👋 Introduction Market Position Description: The Aprilia RS250 (1994) was a highly regarded, race-derived 250cc two-stroke sportbike, renowned for its performance, handling, and distinctive styling. It competed against iconic models like the Yamaha YZF-R25 and Suzuki RGV250. Competitive Analysis Rivals: Yamaha YZF-R25, Suzuki RGV250, Honda NSR250R Key Features Design Philosophy: Lightweight, agile, peaky two-stroke power delivery, excellent chassis dynamics, premium components Racing Heritage: Derived from Aprilia's successful Grand Prix racing motorcycles 📋 Manual Details Coverage Areas Primary Coverage: Full Service, Repair, Rebuild, Refurbish, Restoration Technical Scope: Comprehensive Page Count Estimated Pages: High (detailed content suggests 300-500+ pages) Manual Type Type: Full Service Repair Manual Language Language: English Format Format: Digital (likely PDF based on typical sales) 📖 Manual Coverage Systems Covered Engine: Complete teardown, assembly, tuning, carburetor adjustments (Mikuni TM34), performance modifications Cooling System: Radiator, water pump, coolant types and capacities, bleeding procedures Fuel System: Fuel tank, fuel lines, fuel pump, carburetor servicing and synchronization Exhaust System: Expansion chambers, mufflers, gaskets, sealing Transmission: Clutch operation, gearbox disassembly and assembly, shift mechanism, gear oil specifications Chassis Frame: Frame inspection, alignment, bolt torque specifications Suspension Front: Telescopic forks (Showa), oil types and levels, seal replacement, spring rates, adjustment procedures Suspension Rear: Monoshock (Sachs/Öhlins variants), linkage maintenance, shock absorber servicing, adjustment Brakes Front: Brake calipers (e.g., Brembo), master cylinder, brake lines, pad replacement, fluid types and bleeding Brakes Rear: Brake caliper, master cylinder, brake lines, pad replacement, fluid types and bleeding Wheels Tires: Wheel bearing maintenance, tire pressure recommendations, wheel removal and installation Electrical System: Ignition system, lighting, battery maintenance, charging system, wiring diagrams, starter motor Bodywork: Fairing removal and installation, seat, tank, plastics, minor body repairs Instrumentation: Tachometer, speedometer, warning lights, component testing Procedures Included Maintenance Routine: Oil changes, filter replacements, chain adjustment, brake checks, spark plug replacement Troubleshooting: Diagnostic charts for common starting, running, and electrical issues Rebuilds: Engine, gearbox, suspension, brake system component rebuilds Adjustments: Carburetor synchronization and jetting, ignition timing, suspension sag, clutch and throttle cables Component Replacement: Detailed guides for replacing wear items and major components Technical Depth Depth: In-depth, suitable for advanced DIY mechanics and professional technicians Diagnostics: Advanced diagnostic procedures for engine performance and electrical systems Torque Specifications: Extensive listing of all critical torque values for fasteners Wiring Diagrams: Full, detailed electrical wiring schematics 📊 Manual Specifications File Format Format: PDF (Assumed) Searchability: Likely text-searchable PDF Print Quality Quality: High-resolution scans (Assumed) Binding Type Binding: N/A (Digital Format) Paper Type Paper: N/A (Digital Format) ⚙️ Engine Specifications Primary Engine Type: Liquid-cooled, V-twin, two-stroke Displacement: 249.0 cc Bore X Stroke: 54.0 mm x 54.5 mm Power Output: Approx. 70 hp @ 11,900 rpm (factory spec, often higher in practice) Torque: Approx. 27.1 lb-ft (36.7 Nm) @ 11,000 rpm Compression Ratio: 7.8:1 Lubrication: Premix or Autolube (oil injection system) Fuel System Carburetors: 2 x Mikuni TM34SS flat-slide carburetors Fuel Type: Unleaded gasoline, minimum 95 octane (RON) Engine Components Reed Valves: Rotary disc reed valve induction Ignition: Digital electronic ignition with variable ignition timing 🔧 Transmission Standard Type: 6-speed constant mesh, sequential manual Features Clutch: Wet multi-plate, cable-operated Fluid Specification Gear Oil Type: API GL-4, SAE 75W/90 (Check manual for precise specification) Fluid Capacity Gear Oil Capacity: Approx. 1.3 liters 📐 Dimensions Exterior Length: Approx. 1980 mm Width: Approx. 710 mm Height: Approx. 1135 mm Wheelbase: Approx. 1370 mm Weights Dry Weight: Approx. 140 kg Wet Weight: Approx. 164 kg (with all fluids) Weight Distribution: Optimized for agility and cornering stability 🛡️ Safety Features Ratings Vehicle Type Safety: Sportbike (inherent safety considerations for high-performance machines) Active Features Braking System: Dual front disc brakes, single rear disc brake (typically Brembo calipers) Suspension Stability: High-quality adjustable suspension for predictable handling Passive Features Frame Design: Twin-spar aluminum frame for rigidity 💡 Technology Features Infotainment System: N/A (Sportbike of the era, focus on performance, not infotainment) Driver Assistance Features: N/A (No electronic rider aids typical of modern motorcycles) Engine Management Ignition Type: Digital CDI (Capacitor Discharge Ignition) with variable timing Power Delivery: Characterized by a strong mid-range and top-end power band, typical of 250cc strokers. 🔧 Maintenance Service Intervals Oil Change Engine: Refer to manual; typically every 2,000-3,000 km or annually for gearbox oil. Spark Plugs: Refer to manual; typically every 3,000-5,000 km Chain Adjustment: Every 500-1,000 km or as needed Fluid Specifications Coolant: Ethylene glycol based, 50/50 mix with distilled water (check manual for specific type) Brake Fluid: DOT 4 (check manual for specific type) 2-Stroke Oil: High-quality synthetic 2-stroke oil suitable for high-performance racing applications (e.g., Motul 800, Castrol TTS/Power 1 Racing) Known Issues Common Wear Items: Clutch plates, spark plugs, reed valves, fork seals, exhaust gaskets. Carburetor Tuning: Requires precise synchronization and jetting for optimal performance and to avoid engine damage (e.g.,...