Engine Mechanical:
        
        
            Engine assembly, disassembly, inspection, maintenance, repair of all internal and external components.
        
     
    
        
            Fuel System:
        
        
            Carburetor (or fuel injection for specific markets), fuel pump, fuel lines, fuel filter, fuel tank.
        
     
    
        
            Ignition System:
        
        
            CDI unit, ignition coil, spark plug, wiring.
        
     
    
        
            Cooling System:
        
        
            Radiator, coolant hoses, thermostat, water pump, fan.
        
     
    
        
            Exhaust System:
        
        
            Exhaust pipes, muffler, catalytic converter (if applicable).
        
     
    
        
            Transmission Drivetrain:
        
        
            CVT (Continuously Variable Transmission) assembly, drive belt, pulleys, clutch, gearbox (if applicable).
        
     
    
        
            Brakes:
        
        
            Hydraulic brake system, front and rear brake calipers, master cylinders, brake lines, brake pads, brake discs, parking brake.
        
     
    
        
            Suspension:
        
        
            Front fork assembly, rear shock absorber(s), swingarm, linkage (if applicable).
        
     
    
        
            Steering:
        
        
            Handlebar, steering stem, headstock bearings.
        
     
    
        
            Electrical System:
        
        
            Battery, starter motor, alternator/stator, lighting system (headlight, taillight, turn signals), horn, wiring diagrams, fuses, relays.
        
     
    
        
            Chassis Frame:
        
        
            Frame inspection, mounting points, removal and installation of major chassis components.
        
     
    
        
            Bodywork Trim:
        
        
            Fairings, seat, floorboards, storage compartments, plastics, graphics.
        
     
    
    
        
            Scheduled Maintenance:
        
        
            Oil changes, filter replacements, spark plug checks/replacement, air filter cleaning/replacement, brake fluid checks/replacement, coolant checks/replacement, drive belt inspection/replacement.
        
     
    
        
            Troubleshooting:
        
        
            Diagnostic procedures for common problems, fault finding guides, symptom-based solutions.
        
     
    
        
            Engine Repair:
        
        
            Piston and cylinder inspection/replacement, valve clearance adjustment, crankshaft and connecting rod checks, head gasket replacement.
        
     
    
        
            Transmission Repair:
        
        
            CVT component inspection, drive belt tensioning and replacement, clutch adjustment.
        
     
    
        
            Brake Service:
        
        
            Brake pad replacement, caliper servicing, master cylinder bleeding, brake fluid flush.
        
     
    
        
            Suspension Service:
        
        
            Front fork oil change and seal replacement, rear shock absorber inspection and replacement.
        
     
    
        
            Electrical Diagnostics:
        
        
            Wiring harness inspection, component testing (starter, stator, etc.), troubleshooting electrical faults using wiring diagrams.
        
     
    
        
            Bodywork Removal Installation:
        
        
            Step-by-step instructions for removing and reinstalling fairings, panels, and trim.
        
     
    
    
        
            Depth:
        
        
            Detailed technical procedures suitable for professional mechanics and experienced DIY enthusiasts.
        
     
    
        
            Torque Specifications:
        
        
            Includes torque values for all critical fasteners.
        
     
    
        
            Clearances Tolerances:
        
        
            Specifications for valve clearances, piston ring gaps, bearing clearances, etc.
        
     
    
        
            Wiring Diagrams:
        
        
            Comprehensive electrical system wiring diagrams.
        
     
 
    
    
    
        
            Engine Type 125:
        
        
            4-stroke, liquid-cooled, SOHC, 4-valve
        
     
    
        
            Engine Type 200:
        
        
            4-stroke, liquid-cooled, SOHC, 4-valve
        
     
    
        
            Displacement 125:
        
        
            124.9 cc
        
     
    
    
        
            Bore X Stroke 125:
        
        
            57 mm x 48.6 mm (approximate)
        
     
    
        
            Bore X Stroke 200:
        
        
            69 mm x 53.2 mm (approximate)
        
     
    
        
            Compression Ratio:
        
        
            12.5:1 (typical for LEADER engines)
        
     
    
    
        
            Horsepower 125:
        
        
            Approx. 15 HP @ 8,250 RPM
        
     
    
        
            Horsepower 200:
        
        
            Approx. 21 HP @ 8,250 RPM
        
     
    
        
            Torque 125:
        
        
            Approx. 12.3 Nm @ 7,000 RPM
        
     
    
        
            Torque 200:
        
        
            Approx. 18.2 Nm @ 6,500 RPM
        
     
    
    
        
            Fuel Delivery 125:
        
        
            Carburetor (likely a 30mm Mikuni or similar)
        
     
    
        
            Fuel Delivery 200:
        
        
            Carburetor (likely a 32mm or 34mm Keihin/Mikuni or similar)
        
     
    
        
            Fuel Type:
        
        
            Unleaded gasoline (RON 95 or higher)
        
     
    
        
            Fuel Tank Capacity:
        
        
            Approx. 9.5 Liters
        
     
 
    
    
    
        
            Engine Oil Change:
        
        
            Every 5,000-7,000 km or annually (refer to manual for exact interval and oil type).
        
     
    
        
            Air Filter Maintenance:
        
        
            Clean every 5,000 km, replace every 10,000-15,000 km (or as needed based on conditions).
        
     
    
        
            Spark Plug Replacement:
        
        
            Inspect every 10,000 km, replace every 20,000-30,000 km.
        
     
    
        
            Drive Belt Inspection:
        
        
            Inspect every 10,000 km, replace every 20,000-30,000 km (or based on wear).
        
     
    
        
            Brake Fluid Change:
        
        
            Every 2 years or 20,000 km.
        
     
    
        
            Coolant Change:
        
        
            Every 2-3 years or 20,000-30,000 km.
        
     
    
    
        
            Engine Oil Type:
        
        
            Synthetic SAE 5W-40 or 10W-40 (API SG/SH/SJ or higher)
        
     
    
        
            Engine Oil Capacity:
        
        
            Approx. 1.2 - 1.4 Liters (with filter change)
        
     
    
        
            Coolant Type:
        
        
            Ethylene glycol-based coolant with anti-corrosion additives (e.g., Piaggio/Aprilia brand coolant or equivalent)
        
     
    
    
    
        
            Common Problems:
        
        
            Potential for wear on CVT components (belt, rollers) at higher mileage, occasional electrical gremlins if not maintained, carburation adjustments might be needed over time.