Segment:
Lightweight sport motorcycle, often considered an entry-level or learner-legal sportbike.
Target Audience:
Enthusiasts seeking performance and sportbike aesthetics in a smaller displacement package, riders new to motorcycling.
Key Competitors:
Yamaha YZF-R125 (later models), Honda CBR125R (later models), Derbi GPR50, Aprilia RS Tuono 50.
Design Philosophy:
Emulates the styling and performance characteristics of larger Aprilia sportbikes.
Performance Orientation:
Focus on agile handling and a sporty riding experience.
Engine Type:
High-revving 2-stroke single-cylinder engine.
Engine Mechanical:
Complete overhaul, inspection, disassembly, assembly of the 2-stroke engine.
Fuel System:
Carburetor tuning and servicing (Dell'Orto PHVA/PHBG common), fuel pump, fuel lines, fuel tank.
Ignition System:
Spark plug selection, timing checks, CDI unit, stator, ignition coil testing.
Cooling System:
Liquid-cooled system maintenance, radiator, water pump, thermostat, coolant specifications.
Exhaust System:
Expansion chamber inspection, gasket replacement, silencing components.
Transmission Drivetrain:
6-speed gearbox, clutch operation and adjustment, chain and sprockets maintenance, lubrication.
Frame Chassis:
Frame inspection, steering head bearing service, swingarm maintenance.
Suspension Front:
Telescopic front fork service, oil change, seal replacement, spring specifications.
Suspension Rear:
Monoshock rear suspension service, linkage lubrication, shock absorber adjustments.
Brakes Front:
Hydraulic disc brake system, caliper service, pad replacement, rotor inspection, fluid specifications.
Brakes Rear:
Hydraulic disc brake system, caliper service, pad replacement, rotor inspection, fluid specifications.
Wheels Tires:
Wheel bearing service, tire pressure recommendations, wheel balancing.
Electrical System:
Wiring diagrams, lighting circuits, horn, battery maintenance, starter motor, switchgear.
Bodywork:
Fairing removal and installation, seat, fuel tank mounting, plastics.
Routine Maintenance:
Oil changes (gearbox oil), chain lubrication and adjustment, air filter cleaning/replacement, spark plug checks.
Engine Overhaul:
Piston and cylinder inspection/replacement, crankshaft, bearings, seals.
Carburetor Rebuild:
Complete disassembly, cleaning, reassembly, and jetting adjustments.
Suspension Service:
Fork oil replacement, seal installation, rear shock absorber servicing.
Brake System Maintenance:
Brake bleeding, pad and caliper servicing, fluid replacement.
Electrical Troubleshooting:
Diagnostic procedures for common electrical faults using wiring diagrams.
Clutch Adjustment:
Cable slack adjustment and lever play settings.
Wheel Bearing Replacement:
Proper methods for removing and installing wheel bearings.
Fairing Repair:
Instructions for removing, reinstalling, and potentially minor repair of plastic body panels.
Depth Level:
Comprehensive Workshop Level.
Diagnostic Capabilities:
Detailed troubleshooting guides and symptom-based diagnostics.
Rebuild Instructions:
Full engine, transmission, and component rebuild procedures.
Technical Data:
Includes torque specifications, clearances, tolerances, and fluid capacities.
Engine Type:
2-stroke, single-cylinder, liquid-cooled
Bore X Stroke:
39.5 mm x 40.5 mm
Power Output:
Approximately 10-15 hp (varies by market and tuning, restricted versions common)
Torque Output:
N/A (Specific figures not readily available, but optimized for the 50cc class)
Redline:
Around 9,500 - 10,000 RPM
Carburetor:
Dell'Orto PHVA 17.5mm (common, may vary)
Fuel Type:
Unleaded gasoline (minimum 95 RON recommended for optimal performance)
Oil Mixing:
Automatic oil injection system (separate oil reservoir)
Oil Change Gearbox:
Every 5,000-7,500 km or annually, consult manual for exact specification.
Spark Plug:
Inspect every 2,500 km, replace as needed or annually.
Air Filter:
Clean every 2,500 km, replace as needed.
Chain Lubrication:
Every 500-750 km and after washing or riding in rain.
Coolant:
Ethylene glycol-based antifreeze, typically a 50/50 mix with distilled water.
Brake Fluid:
DOT 4 hydraulic brake fluid.
Common Wear Items:
Clutch plates, piston rings, spark plugs, chain and sprockets, fork seals due to high-revving nature.
Carburetor Tuning:
Can be sensitive to altitude, temperature, and exhaust/air filter modifications, requiring periodic tuning.
Electrical Connections:
Corrosion or loose connections can occur over time, especially in damp climates.
