Segment:
        
        
            Premium mid-size scooter, positioned for urban commuting and light touring
        
     
    
    
        
            Competitors:
        
        
            Honda Pantheon 125, Gilera Nexus 125, Piaggio X9 125, Yamaha X-MAX 125 (later models)
        
     
    
    
        
            Design Philosophy:
        
        
            Sporty styling combined with practicality and Italian flair
        
     
    
        
            Engine Architecture:
        
        
            Robust and reliable single-cylinder, liquid-cooled engine known for good performance in its class
        
     
    
        
            Handling:
        
        
            Sport-oriented chassis and suspension providing confident handling
        
     
    
        
            Comfort:
        
        
            Comfortable riding position and seat for longer journeys
        
     
 
    
    
    
        
            Engine:
        
        
            Complete engine overhaul, top-end, bottom-end, cooling system, lubrication system
        
     
    
        
            Fuel System:
        
        
            Carburetor (likely Mikuni or Keihin) tuning, cleaning, and overhaul; fuel pump, fuel lines, fuel filter replacement
        
     
    
        
            Ignition System:
        
        
            CDI unit, spark plug specifications, coil testing, timing adjustments
        
     
    
        
            Transmission:
        
        
            Automatic transmission (CVT - Continuously Variable Transmission) service, belt replacement, roller weights, clutch assembly
        
     
    
        
            Electrical System:
        
        
            Wiring diagrams, battery, charging system (alternator/stator, regulator/rectifier), starter motor, lighting, indicators, horn, fuses
        
     
    
        
            Braking System:
        
        
            Hydraulic disc brakes (front and rear), brake fluid specifications, caliper overhaul, pad replacement, line bleeding
        
     
    
        
            Suspension:
        
        
            Front telescopic forks (service, seal replacement, oil levels), rear shock absorber unit (adjustment, replacement)
        
     
    
        
            Frame And Bodywork:
        
        
            Chassis inspection, body panel removal/installation, seat assembly, storage compartment
        
     
    
        
            Cooling System:
        
        
            Liquid cooling system, radiator, fan, thermostat, coolant type and capacity
        
     
    
    
        
            Maintenance:
        
        
            Scheduled maintenance, oil changes, filter replacements, spark plug checks, tire pressure, chain adjustment (if applicable, though likely belt-driven)
        
     
    
        
            Troubleshooting:
        
        
            Step-by-step diagnostic procedures for common and uncommon faults, fault codes (if applicable)
        
     
    
        
            Repair:
        
        
            Detailed instructions for component repair, assembly, and disassembly
        
     
    
        
            Engine Rebuild:
        
        
            Complete engine disassembly, inspection, component replacement (pistons, rings, valves), reassembly, and break-in procedures
        
     
    
        
            Electrical Diagnostics:
        
        
            Testing circuits, component testing (e.g., stator output, regulator function), wiring harness troubleshooting
        
     
    
    
        
            Depth:
        
        
            Comprehensive, suitable for professional technicians and experienced DIY mechanics
        
     
    
        
            Diagnostic Level:
        
        
            Advanced diagnostics, including electrical system analysis and component testing
        
     
    
        
            Rebuild Level:
        
        
            Full rebuild procedures for major components
        
     
 
    
    
    
        
            Engine Designation:
        
        
            Aprilia Atlantic 125 (Likely uses a Rotax engine variant)
        
     
    
    
        
            Bore X Stroke:
        
        
            57 mm x 48.6 mm (Typical for this class/engine)
        
     
    
        
            Compression Ratio:
        
        
            10.5:1 (Typical)
        
     
    
        
            Cooling System:
        
        
            Liquid-cooled
        
     
    
    
        
            Horsepower:
        
        
            Approx. 15 HP (11 kW) @ 9000 RPM (Estimated, specific figures vary)
        
     
    
        
            Torque:
        
        
            Approx. 12 Nm @ 7000 RPM (Estimated, specific figures vary)
        
     
    
    
        
            Carburetor Type:
        
        
            CVK (Constant Velocity Carburetor) type, e.g., Keihin or Mikuni, 28mm (typical)
        
     
    
        
            Fuel Delivery:
        
        
            Gravity feed with electric fuel pump for carburetor priming
        
     
    
        
            Fuel Type:
        
        
            Unleaded gasoline (RON 95 or higher recommended)
        
     
    
    
        
            Engine Oil Type:
        
        
            SAE 10W-40 API SG or JASO MA
        
     
    
        
            Engine Oil Capacity:
        
        
            Approx. 1.2 Liters (Check manual for exact specification)
        
     
    
        
            Coolant Type:
        
        
            Ethylene Glycol based, anti-freeze/anti-boil mixture (50/50)
        
     
 
    
    
    
        
            Length:
        
        
            Approx. 2000 mm (Estimated)
        
     
    
        
            Width:
        
        
            Approx. 760 mm (Estimated)
        
     
    
        
            Height:
        
        
            Approx. 1350 mm (Estimated)
        
     
    
    
        
            Dry Weight:
        
        
            Approx. 150 kg (Estimated)
        
     
    
        
            Gross Vehicle Weight Rating:
        
        
            Approx. 300 kg (Estimated)
        
     
    
    
        
            Underseat Storage:
        
        
            Sufficient for one full-face helmet and small items
        
     
    
    
        
            Front Tire Size:
        
        
            120/70-14 (Typical)
        
     
    
        
            Rear Tire Size:
        
        
            140/70-14 (Typical)
        
     
    
        
            Wheelbase:
        
        
            Approx. 1440 mm (Estimated)
        
     
 
    
    
    
        
            Crash Test Data:
        
        
            N/A (Motorcycle/Scooter safety ratings are typically not applicable in the same way as cars)
        
     
    
    
        
            Braking:
        
        
            Disc brakes front and rear, linked braking system (possible)
        
     
    
        
            Lighting:
        
        
            Halogen headlight, LED taillight (likely)
        
     
    
    
        
            Chassis Design:
        
        
            Steel tube frame for rigidity and stability
        
     
    
        
            Handlebar Design:
        
        
            Ergonomic handlebar for control and comfort
        
     
 
    
    
    
        
            Oil Change Interval:
        
        
            Every 3,000 km or 6 months (typical, refer to manual for precise interval)
        
     
    
        
            Air Filter Check:
        
        
            Every 3,000 km
        
     
    
        
            Spark Plug Replacement:
        
        
            Every 6,000 km (typical, use specified plug type)
        
     
    
        
            Cvt Belt Inspection:
        
        
            Every 6,000 km, replace as needed
        
     
    
        
            Valve Clearance Check:
        
        
            Every 12,000 km or annually
        
     
    
    
    
        
            Coolant Capacity:
        
        
            Approx. 1.0 Liters (check manual)
        
     
    
    
        
            Common Problems:
        
        
            CVT belt wear, regulator/rectifier failure, starter solenoid issues, carburetor gumming if not used regularly.
        
     
    
        
            Preventative Maintenance:
        
        
            Regular use or fuel stabilizer during storage, consistent oil changes, and cleaning the air filter are crucial.
        
     
 
    
    
    
        
            Manufacturer:
        
        
            Aprilia is an Italian manufacturer known for its performance-oriented motorcycles and scooters.
        
     
    
        
            Company Focus:
        
        
            Racing heritage and innovative engineering.
        
     
    
    
        
            Atlantic Lineage:
        
        
            The Atlantic series represented Aprilia's foray into the maxi-scooter market, offering comfort and performance.
        
     
    
        
            Engine Platform:
        
        
            The 125cc variant often utilized the proven and reliable Rotax engine, shared within the Piaggio Group.
        
     
    
    
        
            Manufacturing Location:
        
        
            Italy (Likely Noale, Venice)
        
     
    
        
            Production Period:
        
        
            The Atlantic 125 was produced in various iterations from the late 1990s into the 2000s.