🏷️ Basic Information Identification Make: Aprilia Model: RS 125 (Rotax 122 Engine) Year: 1996 Engine Code: Rotax 122 Codes Chassis Code Identifier: Likely specific to the 1996 RS 125 variant, consult manual for exact codes. 👋 Introduction Market Position Market Position: Essential diagnostic and repair tool for owners and technicians of the 1996 Aprilia RS 125, particularly those focused on engine maintenance and rebuilds. Competitive Analysis Competitive Analysis: Offers in-depth engine-specific coverage, complementing broader service manuals that might cover the entire motorcycle. Crucial for maintaining the performance and longevity of the iconic Rotax 122 engine. Key Features Key Features: Detailed engine overhaul procedures, component-specific maintenance guidelines, clear explanations for complex engine tasks, comprehensive index for quick reference. 📋 Manual Details Coverage Areas Coverage Areas: Engine Removal, Engine Disassembly, Individual Component Maintenance, Engine Reassembly, Engine Installation Page Count Page Count: Not specified in product info. Typical workshop manuals of this era are 200-500 pages. Manual Type Manual Type: Workshop Repair Manual / Service Manual Language Language: English Format Format: PDF 📖 Manual Coverage Systems Covered Systems Covered: Engine mechanical systems (cooling, lubrication, fuel delivery, ignition, exhaust), Engine internal components (piston, cylinder, crankshaft, connecting rod, bearings, valves, camshafts), Engine mounting and removal/installation procedures. Procedures Included Procedures Included: Engine overhaul, component inspection and testing, torque specifications, timing procedures, troubleshooting common engine issues, maintenance tasks specific to engine components. Technical Depth Technical Depth: Comprehensive. Covers detailed disassembly, inspection, repair, and reassembly of the Rotax 122 engine, suitable for professional mechanics and experienced DIY enthusiasts. 📊 Manual Specifications File Format File Format: PDF Print Quality Print Quality: Digital PDF, print quality dependent on source document and user printer. Binding Type Binding Type: N/A (Digital PDF) Paper Type Paper Type: N/A (Digital PDF) ⚙️ Engine Specifications Primary Engine Primary Engine: Rotax 122 Performance Engine Type: Two-stroke, single-cylinder, liquid-cooled Bore X Stroke: 54 mm x 54.5 mm (typical for Rotax 122) Displacement: 124.8 cc Compression Ratio: Approx. 8.7:1 (varies slightly with model/tune) Horsepower: Approx. 30-34 hp at 9,000-10,000 RPM (stock RS 125) Torque: Approx. 2.2-2.4 kg-m (16-17 lb-ft) at 8,000-9,000 RPM Fuel System Carburetor: Dell'Orto PHBH 28 (or similar Dell'Orto/Mikuni) Fuel Type: Unleaded gasoline (95-98 RON) Oil Mixing: Pre-mix or separate oil injection system (specific to model variant) 🔧 Transmission Standard Transmission Type: 6-speed constant mesh Optional Clutch Type: Wet multi-plate Features Gear Ratios: Specific ratios detailed in the manual. Typical first gear is around 2.5-3.0:1, top gear around 0.9-1.0:1. Final Drive: Chain drive Transmission Fluid: Gear oil, specific viscosity and capacity detailed in the manual (e.g., SAE 75W/90 or 80W/90). 📐 Dimensions Exterior Length: Varies by specific RS 125 model, consult chassis documentation. Width: Varies by specific RS 125 model, consult chassis documentation. Height: Varies by specific RS 125 model, consult chassis documentation. Weights Dry Weight: Approx. 120-130 kg (for RS 125) Fuel Capacity: Approx. 12-14 liters (including reserve) 🛡️ Safety Features Ratings Safety Ratings: N/A for historical motorcycle workshop manuals. Focus is on mechanical safety and operational integrity. Active Features Braking System Front: Single Disc, hydraulic caliper (e.g., Brembo or Grimeca) Braking System Rear: Single Disc, hydraulic caliper Passive Features Lighting System: Headlight, taillight, turn signals, brake light. 💡 Technology Features Infotainment Infotainment System: N/A. This is a 1996 sport motorcycle; technology is focused on engine management and basic instrumentation. Instrumentation Instrumentation: Analog speedometer, tachometer, engine temperature gauge, indicator lights (turn signals, high beam, neutral). 🔧 Maintenance Service Intervals Spark Plug Replacement: Typically every 4,000-6,000 km or annually. Consult manual for specific plug type and gap. Air Filter Cleaning Replacement: Regular inspection and cleaning (every 2,000-3,000 km), replacement as needed. Chain Cleaning Lubrication: Every 500-700 km, or after riding in wet conditions. Engine Oil Change: For gearbox oil: typically every 6,000-10,000 km or annually. Engine oil is mixed with fuel or injected separately, not a crankcase oil change like a four-stroke. Fluid Specifications Coolant Type: Ethylene glycol-based antifreeze mixture with distilled water (50/50). Consult manual for specific type. Brake Fluid Type: DOT 4 or DOT 5.1 (check manual for exact specification). Known Issues Known Issues: Common issues can include carbon buildup in exhaust ports and power valve, wear on piston rings and cylinder due to high-revving nature, carburetor jetting sensitivity, and sealing issues in the crankcase and cylinder base gasket. Power Valve Maintenance: Critical for performance; requires regular cleaning and checking of its mechanical actuation. 📚 Vehicle History Brand Heritage Brand Heritage: Aprilia is an Italian manufacturer renowned for its performance-oriented motorcycles, particularly in the sportbike and racing segments, dating back to 1945. Model Evolution Model Evolution: The RS 125 has a long lineage, evolving from earlier models like the AF1 Futura, consistently featuring advanced two-stroke technology and aggressive styling for its class. The Rotax 122 engine was a key component in its performance. Production Production Period: The Rotax 122 engine was used in Aprilia...