Segment:
Sport Motorcycle / Lightweight Sportbike
Target Audience:
Enthusiasts seeking performance and sporty styling in a 125cc class
Key Competitors:
Yamaha TZR 125, Suzuki RG 125 Gamma, Aprilia AF1 Futura 125
Styling:
Aggressive, aerodynamic fairing design inspired by larger sportbikes
Engine Layout:
Two-stroke, single-cylinder, liquid-cooled
Chassis:
Steel perimeter frame, often with alloy swingarm
Engine:
Disassembly, assembly, troubleshooting, tuning, specifications
Fuel System:
Carburetor, fuel lines, fuel tank maintenance and repair
Ignition System:
CDI, ignition timing, spark plug specifications
Cooling System:
Liquid cooling system components and maintenance
Transmission:
Clutch, gearbox, shift mechanism, maintenance and repair
Suspension:
Front fork, rear shock absorber, linkages, adjustments
Brakes:
Front and rear brake systems, hydraulic lines, caliper maintenance
Electrical System:
Wiring diagrams, battery, lighting, starter, charging system
Bodywork And Frame:
Fairings, chassis, seat, body panel removal and installation
Wheels And Tires:
Wheel bearing maintenance, tire pressures, rim specifications
Exhaust System:
Muffler, expansion chamber maintenance
Maintenance:
Scheduled maintenance, oil changes, filter replacements, chain adjustment
Troubleshooting:
Diagnostic procedures for common issues, electrical faults, engine performance problems
Repair:
Step-by-step instructions for component disassembly, repair, and reassembly
Overhaul:
Complete engine and gearbox overhaul procedures
Adjustments:
Carburetor tuning, ignition timing, clutch and brake lever adjustments
Depth:
In-depth, suitable for experienced home mechanics and professional technicians
Diagnostic Capabilities:
Detailed diagnostic charts and flowcharts for various systems
Specifications Detail:
Precise torque values, clearances, fluid capacities, and performance data
Type:
2-stroke, liquid-cooled, reed valve induction
Bore X Stroke:
56 mm x 50.6 mm
Compression Ratio:
Approx. 7.0:1
Horsepower:
Approx. 28-32 hp @ 11,500 rpm (depending on market restrictions)
Torque:
Approx. 18-20 Nm @ 10,500 rpm
Top Speed:
Approx. 140-150 km/h (87-93 mph)
Carburetor:
Dell'Orto PHBH 28 or equivalent
Fuel Type:
Unleaded gasoline, minimum 95 RON
2-Stroke Oil:
Fully synthetic 2-stroke oil, mixture ratio 1:50 (oil injection system)
Crash Safety Standards:
N/A (Motorcycle safety standards vary by region and era; focus is on design integrity)
Braking System:
Disc brakes front and rear
Suspension Stability:
Telescopic front forks and monoshock rear suspension contributing to handling stability
Lighting:
Halogen headlight, taillight, turn signals
Oil Change Engine:
Every 3,000 - 4,000 km or annually
Spark Plug Replacement:
Every 5,000 - 8,000 km
Air Filter Cleaning:
Every 2,000 - 3,000 km
Chain Lubrication Adjustment:
Every 500 km or after washing/rain
Coolant Type:
Ethylene glycol-based coolant, 50% mix with distilled water
Transmission Oil Type:
SAE 10W-40 API SG or higher (for gearbox and wet clutch)
Carburetor Fouling:
Common with older 2-strokes, requires regular cleaning and adjustment
Exhaust Power Valve:
Can seize or become carboned up, requiring cleaning or replacement
Electrical Connections:
Corrosion or loose connections can cause intermittent issues
Liquid Cooling Leaks:
Hose degradation or radiator issues can lead to coolant loss
