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.
