Market Segment:
        
        
            Lightweight sport motorcycle (125cc supersport class)
        
     
    
        
            Target Audience:
        
        
            Young riders, enthusiasts seeking performance and style in the 125cc category.
        
     
    
    
        
            Key Competitors:
        
        
            Yamaha TZR 125, Suzuki RG 125 Gamma, Aprilia RS 125 (later models), Honda NSR 125.
        
     
    
    
        
            Design Philosophy:
        
        
            Aspirational supersport styling mirroring larger Cagiva models, advanced chassis and suspension for its class.
        
     
    
        
            Aerodynamics:
        
        
            Full fairing designed for aerodynamic efficiency and distinctive Italian styling.
        
     
    
        
            Handling:
        
        
            Sport-oriented chassis geometry and suspension setup for agile handling.
        
     
 
    
    
    
        
            Engine Overhaul:
        
        
            Complete engine disassembly, inspection, repair, and reassembly procedures.
        
     
    
        
            Fuel System:
        
        
            Carburetor adjustment and overhaul (Dell'Orto PHBH/PHSB), fuel pump, fuel lines, fuel tank.
        
     
    
        
            Ignition System:
        
        
            CDI ignition system, spark plug specifications, timing adjustment, coil testing.
        
     
    
        
            Cooling System:
        
        
            Liquid cooling system, radiator, water pump, thermostat, coolant specifications and bleeding procedures.
        
     
    
        
            Exhaust System:
        
        
            Exhaust pipe and silencer maintenance and inspection.
        
     
    
        
            Transmission Clutch:
        
        
            Gearbox disassembly, inspection, and repair; clutch assembly, adjustment, and friction plate replacement.
        
     
    
        
            Suspension Front:
        
        
            Telescopic front fork (e.g., Marzocchi or Paioli) disassembly, oil change, seal replacement, and adjustment.
        
     
    
        
            Suspension Rear:
        
        
            Monoshock rear suspension system, shock absorber adjustment and overhaul, linkage maintenance.
        
     
    
        
            Brakes Front:
        
        
            Disc brake system, caliper overhaul, pad replacement, hydraulic fluid specifications and bleeding.
        
     
    
        
            Brakes Rear:
        
        
            Disc brake system, caliper overhaul, pad replacement, hydraulic fluid specifications and bleeding.
        
     
    
        
            Wheels Tires:
        
        
            Wheel bearing inspection and replacement, tire pressure recommendations, wheel balancing.
        
     
    
        
            Electrical System:
        
        
            Wiring diagrams, battery maintenance, lighting system, starter motor, alternator/stator testing.
        
     
    
        
            Bodywork Chassis:
        
        
            Frame inspection, fairing removal and installation, seat, fuel tank, and minor body panel repairs.
        
     
    
    
        
            Routine Maintenance:
        
        
            Oil changes, filter replacements, chain adjustment, spark plug checks, lubrication points.
        
     
    
        
            Troubleshooting Guides:
        
        
            Diagnostic procedures for common starting, running, and electrical issues.
        
     
    
        
            Engine Rebuild:
        
        
            Piston, cylinder, crankshaft, and connecting rod replacement and measurement specifications.
        
     
    
        
            Carburetor Tuning:
        
        
            Detailed steps for jetting, float height adjustment, and idle speed control.
        
     
    
        
            Brake Bleeding:
        
        
            Step-by-step instructions for purging air from the hydraulic brake system.
        
     
    
        
            Fork Seal Replacement:
        
        
            Comprehensive guide to disassembling and reassembling front forks for seal replacement.
        
     
    
        
            Electrical Component Testing:
        
        
            Methods for testing CDI units, ignition coils, regulators, and other electrical parts using a multimeter.
        
     
    
        
            Wheel Bearing Replacement:
        
        
            Guidance on removing and installing wheel bearings.
        
     
    
    
        
            Technical Depth:
        
        
            Comprehensive (from basic maintenance to complete engine and chassis rebuilds)
        
     
    
        
            Diagnostic Capability:
        
        
            Detailed troubleshooting sections with symptom-to-cause correlation.
        
     
    
        
            Torque Specifications:
        
        
            Includes critical torque values for engine, chassis, and brake components.
        
     
    
        
            Tolerances And Clearances:
        
        
            Specific measurements for critical engine parts like piston-to-cylinder clearance, bearing clearances.
        
     
 
    
    
    
        
            Engine Type:
        
        
            2-stroke, liquid-cooled
        
     
    
        
            Engine Displacement:
        
        
            124.5 cc
        
     
    
        
            Bore X Stroke:
        
        
            56 mm x 50.6 mm
        
     
    
        
            Compression Ratio:
        
        
            Approx. 7.4:1 (variable by variant/region, often lower for emission compliance)
        
     
    
        
            Cylinder Configuration:
        
        
            Single-cylinder, reed valve intake
        
     
    
    
        
            Horsepower Peak:
        
        
            Approx. 30-32 HP @ 11,000 RPM (varies by market restrictions)
        
     
    
        
            Torque Peak:
        
        
            Approx. 19 Nm @ 10,500 RPM
        
     
    
    
        
            Carburetor Model:
        
        
            Dell'Orto PHBH 30 or PHSB 30 (common)
        
     
    
        
            Fuel Delivery:
        
        
            Gravity feed from fuel tank to carburetor.
        
     
    
        
            Fuel Type:
        
        
            Unleaded gasoline (RON 95 recommended), requires 2-stroke oil premixed or via oil injection system.
        
     
    
    
        
            Lubrication System:
        
        
            Pre-mix or separate oil injection system (depending on specific C9 variant).
        
     
 
    
    
    
        
            Engine Oil Change:
        
        
            Every 3,000-5,000 km or annually, check manual for specific recommendation.
        
     
    
        
            Spark Plug Replacement:
        
        
            Inspect every 5,000 km, replace as needed (refer to manual for specific plug type and gap).
        
     
    
        
            Air Filter Cleaning:
        
        
            Clean every 5,000 km, replace every 10,000-15,000 km.
        
     
    
        
            Chain Lubrication:
        
        
            Lubricate and adjust chain every 1,000 km or as needed.
        
     
    
        
            Fork Oil Change:
        
        
            Recommended every 10,000-15,000 km or if fork performance degrades.
        
     
    
    
        
            Coolant Type:
        
        
            Ethylene glycol based antifreeze mixture (50/50 with distilled water recommended).
        
     
    
        
            Brake Fluid Type:
        
        
            DOT 3 or DOT 4 hydraulic brake fluid (refer to manual for exact specification).
        
     
    
        
            2 Stroke Oil Type:
        
        
            High-quality 2-stroke synthetic or semi-synthetic oil (API TC, JASO FD or FD compliant).
        
     
    
    
        
            Known Issues List:
        
        
            Typical issues include carburetor gumming due to infrequent use, wear on reed valves, aging electrical connectors, and fork seal leaks. Overheating can occur if cooling system is not maintained. Two-stroke engines require diligent maintenance.
        
     
 
    
    
    
        
            Brand Origin:
        
        
            Cagiva is an Italian motorcycle manufacturer, known for its sporty and performance-oriented machines.
        
     
    
        
            Brand Focus:
        
        
            Historically focused on 2-stroke performance and racing heritage, particularly in smaller displacement classes.
        
     
    
    
        
            Predecessor:
        
        
            Models like the Cagiva Mito 125 (which evolved from this platform) and earlier Cagiva 125 models.
        
     
    
        
            Successor:
        
        
            The Freccia platform paved the way for the highly successful Cagiva Mito series.
        
     
    
        
            Design Influences:
        
        
            Features a design language heavily influenced by larger sportbikes of the era, aiming for a 'big bike' feel in a 125cc package.
        
     
    
    
        
            Manufacturing Location:
        
        
            Italy
        
     
    
        
            Production Period:
        
        
            The C9 model designation specifically covers the 1988-1990 production years.