Segment:
Lightweight sport motorcycle (125cc class equivalent performance in its era).
Target Audience:
Young riders, commuters, track day enthusiasts seeking a sporty and agile machine.
Key Competitors:
Aprilia RS125 (larger displacement), Yamaha YZF-R125, Honda CBR125R, Suzuki GSX-R125.
Design Philosophy:
Race-inspired styling, aggressive ergonomics, performance-oriented chassis.
Handling:
Renowned for its sharp handling and agility, typical of Aprilia's racing heritage.
Engine Mechanical:
Top-end overhaul, bottom-end assembly, cylinder head, piston, connecting rod, crankshaft, valve timing, lubrication system, cooling system.
Fuel System:
Carburetor identification, disassembly, cleaning, adjustment (Dell'Orto PHVA 12/17.5 series), fuel pump, fuel lines, fuel tank maintenance.
Ignition System:
CDI ignition, spark plug specifications, ignition timing, troubleshooting.
Exhaust System:
Muffler, expansion chamber, heat shields, gaskets, removal and installation procedures.
Transmission:
6-speed gearbox, clutch operation, lubrication, disassembly, reassembly, gear shift mechanism.
Chassis Frame:
Frame inspection, weld integrity, steering head bearings, swingarm.
Suspension Front:
Telescopic fork specifications (Marzocchi/Paioli), oil type and level, seal replacement, fork leg disassembly.
Suspension Rear:
Monoshock absorber, linkage system, spring preload adjustment, shock absorber replacement.
Braking System Front:
Hydraulic disc brake, caliper specifications (Brembo/Grimeca), brake pad replacement, fluid type (DOT 4), bleeding procedure, master cylinder.
Braking System Rear:
Hydraulic disc brake, caliper specifications, brake pad replacement, fluid type, bleeding procedure.
Wheels Tires:
Wheel bearing inspection and replacement, tire size specifications, pressure recommendations, rim maintenance.
Electrical System:
Wiring diagrams, battery specifications, lighting system (headlight, taillight, indicators), horn, starter circuit.
Bodywork:
Fairing removal and installation, seat, fuel tank, fenders, graphics.
Maintenance:
Oil changes, filter replacements, chain adjustment, spark plug replacement, brake fluid flush, coolant checks.
Troubleshooting:
Diagnosing common starting issues, engine performance problems, electrical faults, braking system malfunctions.
Repair:
Engine rebuilds, carburetor tuning, suspension servicing, brake system overhauls, electrical component replacement.
Diagnostics:
Diagnostic charts for common issues, fault code interpretation (where applicable).
Depth:
Detailed technical specifications, step-by-step repair instructions, torque values, special tool recommendations.
Oil Change Engine:
Every 3,000 km or annually (for gearbox oil).
Spark Plug Replacement:
Every 5,000 km or as needed based on inspection.
Air Filter Cleaning:
Every 2,000 km, replace as needed.
Chain Lubrication:
Every 500 km and after washing/rain.
Brake Fluid Change:
Every 2 years or as per manufacturer recommendation.
Engine Oil Transmission:
SAE 80W/90 GL-4 transmission oil. Capacity approx. 0.8-1.0 Liters (check manual for exact capacity).
Coolant Type:
Ethylene glycol based coolant with anti-corrosion additives. Typically a 50/50 mix with distilled water.
Brake Fluid:
DOT 4 hydraulic brake fluid.
2 Stroke Oil:
High-quality synthetic 2-stroke oil, specifically for premix or separate injection systems.
Carburetor Wear:
Common for older Dell'Orto carburetors to require periodic cleaning and jetting adjustments.
Exhaust Leaks:
Gasket seals between cylinder and expansion chamber can degrade over time.
Cooling System Maintenance:
Importance of proper coolant levels and radiator cleanliness for the 2-stroke engine.
Clutch Slippage:
Can occur with excessive use or worn clutch plates/springs.