Segment:
        
        
            Entry-level to mid-range sport/naked motorcycle, popular for commuting and beginner riders.
        
     
    
    
        
            Competitors:
        
        
            Similar 125cc motorcycles from brands like Yamaha (YZF-R125, MT-125), Honda (CBR125R), Suzuki (GSX-R125), Kawasaki (Ninja 125).
        
     
    
    
        
            Manual Value Proposition:
        
        
            Comprehensive, step-by-step guidance with detailed diagrams, crucial for DIY maintenance and repair, ensuring longevity and optimal performance of the Hyosung RX125.
        
     
    
        
            Vehicle Appeal:
        
        
            Affordable, lightweight, and agile motorcycle suitable for urban riding and learning motorcycling skills.
        
     
 
    
    
    
        
            Covered Years:
        
        
            1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
        
     
    
    
    
    
    
        
            Type:
        
        
            Workshop Service Repair Manual
        
     
    
    
    
    
 
    
    
    
        
            Engine Systems:
        
        
            Engine disassembly, assembly, internal components, lubrication, cooling (if applicable), ignition, fuel system (carburetor/injection), exhaust system.
        
     
    
        
            Transmission Drivetrain:
        
        
            Gearbox, clutch, final drive (chain/belt).
        
     
    
        
            Chassis Suspension:
        
        
            Frame, front forks, rear shock absorber/suspension, swingarm.
        
     
    
        
            Braking System:
        
        
            Front and rear brake mechanisms (disc/drum), hydraulic systems, levers, pedals.
        
     
    
        
            Electrical System:
        
        
            Wiring diagrams, battery, charging system (stator, regulator/rectifier), starting system (starter motor, solenoid), lighting, instrumentation, ignition system components.
        
     
    
        
            Fuel System:
        
        
            Fuel tank, fuel lines, fuel filter, carburetor (likely), fuel pump (if applicable).
        
     
    
        
            Bodywork Fittings:
        
        
            Fairings, seat, handlebars, mirrors, footpegs, fenders, body panels.
        
     
    
        
            Cooling System:
        
        
            Detailed procedures for inspecting and maintaining the cooling system, including coolant flushes and radiator service (if applicable).
        
     
    
    
        
            Maintenance:
        
        
            Periodic maintenance checks, lubrication, filter replacement, spark plug service, chain adjustment, brake adjustments, fluid changes.
        
     
    
        
            Troubleshooting:
        
        
            Diagnostic procedures for common faults, symptom analysis, step-by-step troubleshooting guides.
        
     
    
        
            Repair:
        
        
            Detailed instructions for removal, disassembly, inspection, repair, reassembly, and installation of all vehicle components.
        
     
    
        
            Adjustments:
        
        
            Carburetor tuning, clutch and brake lever free play adjustment, suspension preload adjustment.
        
     
    
        
            Electrical Diagnostics:
        
        
            Includes troubleshooting for common electrical faults, wiring harness inspection, and component testing.
        
     
    
        
            Wheel Tire Service:
        
        
            Procedures for tire removal/installation, wheel balancing (if applicable), and spoke tension adjustment.
        
     
    
        
            Frame Suspension Tuning:
        
        
            Guidance on adjusting suspension components for optimal handling and rider comfort.
        
     
    
        
            Carburetor Service:
        
        
            Comprehensive steps for carburetor cleaning, adjustment, and rebuilding.
        
     
    
    
        
            Depth:
        
        
            Comprehensive, covering routine maintenance to major engine and component overhauls. Includes service data, specifications, and special tool recommendations.
        
     
    
        
            Torque Specifications:
        
        
            Crucial torque values for critical fasteners are provided, essential for safe and accurate assembly.
        
     
    
        
            Pictorial Diagrams:
        
        
            Features detailed illustrations, exploded diagrams, and photos to visually guide users through procedures.
        
     
 
    
    
    
        
            Displacement:
        
        
            125cc class (specific displacement not provided in product info, but typical for this segment is around 124-125 cc)
        
     
    
        
            Configuration:
        
        
            Single-cylinder, 4-stroke (highly probable for this era and displacement)
        
     
    
        
            Cooling System:
        
        
            Likely air-cooled, though liquid cooling is possible on some models.
        
     
    
    
        
            Horsepower:
        
        
            Varies by market and specific model year, typically in the 10-15 HP range for 125cc engines.
        
     
    
        
            Torque:
        
        
            Not specified in product information.
        
     
    
    
        
            Fuel Delivery:
        
        
            Likely Carbureted (typical for 125cc motorcycles of this era). Sequential fuel injection is possible on later models but not confirmed without specific data.
        
     
    
        
            Fuel Type:
        
        
            Unleaded Gasoline
        
     
 
    
    
    
        
            Oil Change Interval:
        
        
            Typically every 3,000-5,000 km or 6-12 months, as specified in the manual. (Specific interval not provided, but standard for the class.)
        
     
    
        
            Spark Plug Replacement:
        
        
            Refer to manual for specific mileage or time interval. Generally checked during oil changes and replaced as needed.
        
     
    
    
        
            Engine Oil Type:
        
        
            Likely SAE 10W-40 or SAE 20W-50 motorcycle-specific oil (API SG or higher, JASO MA rated). Specific grade and capacity to be found in the manual.
        
     
    
        
            Brake Fluid Type:
        
        
            DOT 3 or DOT 4 (if hydraulic brakes are equipped). Refer to manual for exact specification.
        
     
    
        
            Coolant Type:
        
        
            If liquid-cooled, likely ethylene glycol-based coolant, pre-mixed or concentrated. Not applicable if air-cooled.
        
     
    
        
            Gearbox Oil:
        
        
            Likely specific motorcycle gear oil or the same engine oil, capacity to be confirmed in the manual.
        
     
    
    
        
            Common Wear Items:
        
        
            Chain and sprockets, brake pads, tires, clutch plates, fork seals, electrical connections due to vibration and age.
        
     
    
        
            Potential Reliability:
        
        
            While generally reliable, as with any motorcycle of this age, consistent maintenance and addressing minor issues promptly are key to long-term performance.