Hyosung Comet 250 / Comet 125 Service Manual (163 P.)
Complete maintenance and repair guide for V-2 cylinder Comet models. Factory technical reference with valve clearance, compression specs, and wiring diagrams. PN 99000-94710
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Sample pages from the Hyosung Comet 250 / Comet 125 Service Manual (163 P.) manual
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Models Covered & Key Technical Specifications
Hyosung Comet 250, Comet 125 — 2002 Certified Documentary Dossier | Comet Series Repository.
- Factory Storage Capacity: Fuel tank volume is calibrated to 17.0 ℓ (4.49 US gal) Mapping.
- Essential Tolerance Values: Valve clearance intake governs 0.1–0.2 mm (0.004–0.008 in) Configuration.
- Key Consumption Data: Engine oil change is specified as 1,450 ㎖ (48.98 fl oz) Benchmarks.
- Primary Heat Dissipation: The battery supports 12V 12Ah electrical storage Range.
- General Footprint Data: Unladen mass provides 170 kg (375 lbs) structural weight Sequences.
- Approved Tank Capacity: Piston displacement is rated at 249 ㎤ (15.2 in³) for the 250cc variant Baseline.
Manual Description & Preview
Definitive Instructional Diagnostic Manual: Motorcycle Official Hyosung Comet 250, Comet 125 Manual - Maintenance & Repair Reference Service-Catalog
Engineering-Base: Hyosung Comet 250, Comet 125 // Design-Core: V-2 Four-stroke Engine Systems / Mechanical Architecture Logic // Application-Range: 163-page comprehensive technical documentation for scheduled servicing.
| Identifier | Operational-Logic | Validation-Data |
|---|---|---|
| Periodic Maintenance Schedules | Interval-based service procedures with component specifications | Complete intervals from 1,000 to 12,000 km |
| Engine Systems Coverage | V-2 cylinder displacement data and internal mechanism references | Compression pressure standards documented |
| Transmission and Drivetrain | Gear ratio tables and clutch assembly component listings | 5-speed constant mesh specifications included |
| Electrical Architecture | Battery, ignition, charging system component identification | CDI unit and regulator/rectifier function descriptions |
| Chassis and Suspension | Front fork and rear shock absorber servicing procedures | Steering stem bearing adjustment information documented |
Following OEM groupings, the manual includes engine disassembly procedures, covers fuel system carburetor configuration and adjustment reference data, documents periodic maintenance schedules spanning clutch operation and drive chain management, addresses electrical system ignition timing and charging voltage standards, and provides detailed chassis component inspection and suspension servicing information.
Steering component information is provided for handlebar removal, fork reassembly, and steering stem bearing service. Inspection guidelines are provided for wheel runout, brake disc thickness, and suspension component wear limits. Alignment specifications are included for drive chain slack measurement and rear axle positioning. Reference data is included for valve clearance tappet shim selection and compression pressure baselines. This manual covers complete V-2 engine architecture including crankshaft assembly, piston and ring specifications, conrod bearing clearance data, and oil pump function descriptions.
The document presents information on carburetor float height adjustment and jet sizing for both 250cc and 125cc engine variants. System procedures encompassing brake fluid replacement and caliper inspection methodology are detailed for front and rear hydraulic circuits. Electrical troubleshooting tables correlate spark plug performance, ignition coil resistance values, and battery charging specifications. Suspension and chassis sections reference fork spring free length, swingarm pivot shaft runout tolerances, and tire pressure requirements for solo and dual riding conditions.
The manual documents torque specifications for engine mounting bolts to ensure proper assembly integrity.
| Document Overview Table | System Component | Coverage Type | Chapter Reference |
|---|---|---|---|
| Engine Removal/Reinstallation | Disassembly sequence with component identification | Chapter 3 | |
| Fuel Delivery Architecture | Pump inspection and carburetor service procedures | Chapter 4 | |
| Electrical Ignition/Charging | Magneto, CDI unit, and regulator testing methods | Chapter 5 | |
| Brake System Hydraulics | Caliper, master cylinder, and fluid replacement | Chapter 6 | |
| Servicing Data and Specifications | Torque values, clearance data, and troubleshooting tables | Chapter 7 |
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