🏷️ Basic Information Identification Make: Aprilia Model: RS125 Model Variant: All Models Covered Production Years Covered: 2006 Onwards 👋 Introduction Market Position Segment: High-performance lightweight sportbike segment. Target Audience: Enthusiast riders, track day participants, and owners seeking comprehensive maintenance and repair knowledge. Competitive Analysis Competitors: Yamaha YZF-R125, Honda CBR125R, Kawasaki Ninja 125 (depending on market availability and specific year comparisons). Key Features Vehicle Appeal: Aggressive styling, sporty handling, rev-happy engine, premium brand image. Manual Value Proposition: Empowers owners to perform in-depth maintenance and repairs, saving on dealership costs and fostering a deeper understanding of their machine. 📋 Manual Details Coverage Areas Overall Coverage: Full & Complete Service Repair Workshop Manual Repair Scope: All Repairs Covered A-Z Page Count Estimated Page Count: Detailed and comprehensive, exceeding 300 pages (typical for professional workshop manuals covering all aspects). Manual Type Type: Service Repair Workshop Manual Language Language: English Format Format: PDF 📖 Manual Coverage Systems Covered Engine Mechanical: Complete overhaul, piston, cylinder, crankshaft, connecting rod, bearings, cylinder head, valve timing, seals, gaskets, lubrication system. Engine Electrical: Ignition system, starting system, charging system, ECU diagnostics, wiring diagrams, sensors, switches, coils, spark plugs. Fuel System: Carburetor (or EFI depending on specific 2006+ variants), fuel pump, fuel filter, fuel lines, fuel tank, airbox. Cooling System: Radiator, water pump, coolant hoses, thermostat, fan operation, coolant specifications. Exhaust System: Exhaust manifold, catalytic converter (if applicable), muffler, lambda sensor (if applicable). Transmission Gearbox: Gear selection mechanism, internal gearbox components, clutch operation, clutch fluid, clutch wear indicators. Suspension Front: Telescopic forks, damping adjustment, oil levels and specifications, seals, fork gaiters, steering head bearings. Suspension Rear: Monoshock absorber, linkage system, spring preload adjustment, damping adjustment, rear swingarm, bearings. Brakes Front: Brake caliper, master cylinder, brake fluid specifications, brake pads, brake discs, braided lines (if applicable). Brakes Rear: Brake caliper, master cylinder, brake fluid specifications, brake pads, brake discs. Wheels Tires: Wheel bearings, wheel balancing, tire pressure, tire types, rim specifications, spoke tension (if applicable). Electrical System: Headlights, taillights, turn signals, horn, dashboard indicators, battery maintenance, fuse box. Chassis Frame: Frame inspection, welds, engine mounts, subframe. Bodywork Fairings: Fairing removal and installation, cosmetic repairs, decal placement. Procedures Included Routine Maintenance: Oil changes, filter replacements, chain adjustment, lubrication, spark plug checks, coolant checks, brake checks. Troubleshooting: Diagnostic flowcharts, common problem identification and solutions, electrical system troubleshooting. Engine Overhaul: Detailed disassembly and reassembly procedures for all engine components. Transmission Repair: Clutch replacement, gearbox component inspection and replacement. Suspension Servicing: Fork seal replacement, shock absorber servicing, steering head bearing adjustment. Brake System Maintenance: Brake fluid flush and replacement, pad and disc replacement, caliper service. Electrical Diagnostics: Fault finding for ignition, charging, starting, and lighting systems. Wheel Tire Service: Wheel bearing replacement, tire mounting and balancing. Chassis Inspection: Frame integrity checks and repairs. Technical Depth Depth: Comprehensive and detailed, suitable for professional technicians and advanced DIY enthusiasts. Covers everything from basic maintenance to complete engine and gearbox rebuilds. 📊 Manual Specifications File Format Format: PDF Searchability: Searchable text for quick information retrieval. Printable: Printable pages for workshop use. Print Quality Image Resolution: High-resolution diagrams and illustrations for clarity. Binding Type Binding: Digital (PDF) Paper Type Paper Type: N/A (Digital Format) ⚙️ Engine Specifications Primary Engine Engine Type: Two-stroke, single-cylinder, liquid-cooled Displacement: 125cc (approx.) Bore X Stroke: Typically around 54mm x 54.5mm (specific to variant, refer to manual). Compression Ratio: Typically around 8.1:1 to 9.6:1 (specific to variant, refer to manual). Performance Horsepower: Around 15-30 hp (depending on restrictions and specific model year, peak power often achieved at high RPM). Torque: Typically around 10-15 Nm (specific to variant). Fuel System Carburetor: Dell'Orto VHST 28 (common, but may vary by market/year - check manual). Fuel Type: Unleaded gasoline (RON 95 or higher recommended). Fuel Delivery: Carburetor with automatic oil injection (Rotax 122 engine base). 🔧 Transmission Standard Type: 6-speed constant mesh gearbox. Optional Optional Gearbox: N/A (Standard 6-speed). Features Clutch Type: Wet, multi-plate clutch. Final Drive: Chain drive. 📐 Dimensions Exterior Length: Approx. 1945 mm (specific to variant). Width: Approx. 760 mm (at handlebars, specific to variant). Height: Approx. 1060 mm (at seat, specific to variant). Wheelbase: Approx. 1345 mm (specific to variant). Weights Dry Weight: Approx. 140 kg (specific to variant). Fuel Tank Capacity: Approx. 13 Liters (specific to variant). 🛡️ Safety Features Ratings Safety Ratings: N/A (Motorcycles are not typically rated by NCAP or similar automotive safety organizations). Active Features Braking System: Hydraulic disc brakes front and rear. ABS: Optional on some later models, but not standard for the 2006 onwards range generally. Check specific model details. Passive Features Lighting: Halogen headlight, LED taillight, turn signals. 💡 Technology Features Infotainment Display: Analog tachometer, digital speedometer, LCD multi-function display (fuel level, trip meter, clock). Driver Assistance ABS: Optional on some models, refer to specific vehicle configuration. Connectivity Connectivity Features: N/A (Motorcycle of this era typically lacks modern...
Diagnostic flowcharts, common problem identification and solutions, electrical system troubleshooting.
Engine Overhaul:
Detailed disassembly and reassembly procedures for all engine components.
Transmission Repair:
Clutch replacement, gearbox component inspection and replacement.
Suspension Servicing:
Fork seal replacement, shock absorber servicing, steering head bearing adjustment.
Brake System Maintenance:
Brake fluid flush and replacement, pad and disc replacement, caliper service.
Electrical Diagnostics:
Fault finding for ignition, charging, starting, and lighting systems.
Wheel Tire Service:
Wheel bearing replacement, tire mounting and balancing.
Chassis Inspection:
Frame integrity checks and repairs.
Technical Depth
Depth:
Comprehensive and detailed, suitable for professional technicians and advanced DIY enthusiasts. Covers everything from basic maintenance to complete engine and gearbox rebuilds.
📊 Manual Specifications
File Format
Format:
PDF
Searchability:
Searchable text for quick information retrieval.
Printable:
Printable pages for workshop use.
Print Quality
Image Resolution:
High-resolution diagrams and illustrations for clarity.
Binding Type
Binding:
Digital (PDF)
Paper Type
Paper Type:
N/A (Digital Format)
⚙️ Engine Specifications
Primary Engine
Engine Type:
Two-stroke, single-cylinder, liquid-cooled
Displacement:
125cc (approx.)
Bore X Stroke:
Typically around 54mm x 54.5mm (specific to variant, refer to manual).
Compression Ratio:
Typically around 8.1:1 to 9.6:1 (specific to variant, refer to manual).
Performance
Horsepower:
Around 15-30 hp (depending on restrictions and specific model year, peak power often achieved at high RPM).
Torque:
Typically around 10-15 Nm (specific to variant).
Fuel System
Carburetor:
Dell'Orto VHST 28 (common, but may vary by market/year - check manual).
Fuel Type:
Unleaded gasoline (RON 95 or higher recommended).
Fuel Delivery:
Carburetor with automatic oil injection (Rotax 122 engine base).
🔧 Transmission
Standard
Type:
6-speed constant mesh gearbox.
Optional
Optional Gearbox:
N/A (Standard 6-speed).
Features
Clutch Type:
Wet, multi-plate clutch.
Final Drive:
Chain drive.
📐 Dimensions
Exterior
Length:
Approx. 1945 mm (specific to variant).
Width:
Approx. 760 mm (at handlebars, specific to variant).
Height:
Approx. 1060 mm (at seat, specific to variant).
Wheelbase:
Approx. 1345 mm (specific to variant).
Weights
Dry Weight:
Approx. 140 kg (specific to variant).
Fuel Tank Capacity:
Approx. 13 Liters (specific to variant).
🛡️ Safety Features
Ratings
Safety Ratings:
N/A (Motorcycles are not typically rated by NCAP or similar automotive safety organizations).
Active Features
Braking System:
Hydraulic disc brakes front and rear.
ABS:
Optional on some later models, but not standard for the 2006 onwards range generally. Check specific model details.
Passive Features
Lighting:
Halogen headlight, LED taillight, turn signals.
💡 Technology Features
Infotainment
Display:
Analog tachometer, digital speedometer, LCD multi-function display (fuel level, trip meter, clock).
Driver Assistance
ABS:
Optional on some models, refer to specific vehicle configuration.
Connectivity
Connectivity Features:
N/A (Motorcycle of this era typically lacks modern connectivity features).
🔧 Maintenance
Service Intervals
Oil Change:
Every 3,000-5,000 km or annually, depending on usage (refer to manual for specific interval).
Spark Plug Check:
Every 3,000-6,000 km (refer to manual for specific type and gap).
Air Filter Cleaning:
Every 3,000-5,000 km or as needed based on conditions.
Chain Lubrication Adjustment:
Every 500-1000 km and as needed.
Fluid Specifications
Engine Oil:
Fully synthetic 2-stroke oil, specific grade (e.g., API TC, JASO FD). Refer to manual for exact specification.
Coolant:
Ethylene glycol-based antifreeze mixture (50/50 with distilled water). Refer to manual for specific type.
Brake Fluid:
DOT 4 brake fluid.
Gearbox Oil:
Specific gear oil, e.g., SAE 75W/90 or SAE 80W/90 GL-4. Refer to manual for exact specification and capacity.
Known Issues
Common Wear Items:
Clutch plates, piston rings, exhaust valve (power valve) operation, steering head bearings, wheel bearings, fork seals due to sporty nature.
Carburetor Tuning:
Sensitivity to temperature and altitude changes, may require periodic jetting adjustments for optimal performance.
Cooling System Maintenance:
Regular flushing and checking for leaks is crucial for preventing overheating in this high-performance 2-stroke engine.
📚 Vehicle History
Brand Heritage
Brand Reputation:
Aprilia is an Italian manufacturer renowned for its racing pedigree and sporty motorcycles, particularly in smaller displacement categories.
Model Evolution
Rs125 Legacy:
The RS125 has a long and successful history, often considered one of the benchmark 125cc sportbikes, celebrated for its performance and handling that punches above its weight.
Engine Development:
Based on the reliable Rotax 122 engine, known for its strong performance and tunability in the lightweight class.
Production
Manufacturing Origin:
Italy.
🏆 Awards & Recognition
Recognitions
Model Acclaim:
Consistently praised in motorcycling media for its performance and handling in the 125cc sportbike class. Often a popular choice for racing championships.
Ratings
Reliability Perception:
Generally considered reliable when properly maintained, especially the Rotax engine. However, being a high-strung 2-stroke, adherence to maintenance schedules is critical.
Certifications
Emissions Standards:
Compliant with European emissions standards relevant to its production year (Euro 3 for later models in the range).
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