Segment:
Lightweight, off-road focused dual-sport motorcycle.
Target Audience:
Riders seeking an agile, capable machine for trail riding, dual-sport adventures, and light commuting.
Key Competitors Era:
Honda XR250L, Yamaha WR250 (early models), Suzuki DR250SE.
Performance Bias:
Emphasized off-road capability with a tractable engine suitable for various terrains.
Design Philosophy:
Lightweight chassis, long-travel suspension, and a torquey single-cylinder engine for versatile performance.
Engine Mechanical:
Disassembly, inspection, repair, and reassembly of engine components (cylinder head, piston, crankshaft, transmission gears, clutch).
Engine Fuel System:
Carburetor inspection, cleaning, adjustment, and overhaul; fuel tank, fuel lines, and fuel pump (if applicable) maintenance.
Engine Ignition System:
Spark plug inspection and replacement, ignition coil testing, CDI unit troubleshooting, timing adjustment procedures.
Engine Cooling System:
Radiator maintenance, coolant replacement, thermostat testing, water pump inspection and repair.
Transmission And Drivetrain:
Gearbox inspection, clutch operation, chain and sprocket maintenance, final drive troubleshooting.
Suspension System:
Front fork (telescopic) service, rear shock absorber inspection and replacement, linkage maintenance.
Braking System:
Front and rear brake caliper service, brake pad replacement, brake fluid flush and replacement, master cylinder inspection.
Electrical System:
Wiring diagrams, battery maintenance, charging system (stator, regulator/rectifier) testing, lighting system troubleshooting, starter motor operation.
Exhaust System:
Muffler and header pipe inspection, gasket replacement, exhaust leak troubleshooting.
Chassis And Frame:
Frame inspection, steering head bearing service, swingarm maintenance, wheel bearing replacement.
Bodywork And Trim:
Fairing removal and installation, seat maintenance, fender replacement.
Routine Maintenance:
Oil changes, filter replacements, chain adjustment and lubrication, spark plug checks, tire pressure checks, brake system checks.
Troubleshooting:
Diagnostic procedures for common starting, running, and electrical issues, symptom-based troubleshooting guides.
Component Overhaul:
Detailed step-by-step instructions for overhauling major engine and transmission components.
Adjustment Procedures:
Carburetor synchronization, idle speed adjustment, clutch cable adjustment, brake lever free play adjustment.
Torque Specifications:
Essential torque values for all critical fasteners and bolts.
Special Tool Requirements:
Identification of specific tools required for certain procedures.
Level Of Detail:
Comprehensive, covering everything from basic rider maintenance to full engine rebuilds and complex electrical diagnostics.
Diagnostic Capabilities:
Includes symptom analysis, troubleshooting charts, and specific tests for electrical and mechanical components.
Rebuild Instructions:
Detailed, illustrated instructions for complete teardown and reassembly of engine, transmission, and suspension units.
Engine Type:
Four-stroke, liquid-cooled, DOHC, single-cylinder
Displacement:
249 cc (cubic centimeters)
Bore X Stroke:
72.0 mm x 61.2 mm (typical for this generation, confirm in manual)
Compression Ratio:
11.0:1 (typical, confirm in manual)
Horsepower Estimated:
Approximately 25-30 HP at 7,000-8,000 RPM (exact figures vary by region and tuning, manual will provide specifics).
Torque Estimated:
Approximately 2.5-2.7 kgf-m (18-19 lb-ft) at 5,500-6,500 RPM (exact figures vary, manual will provide specifics).
Carburetor Type:
Mikuni VM34 (typical, confirm in manual)
Fuel Delivery:
Carbureted
Fuel Type:
Unleaded gasoline
Oil Type:
SAE 10W-40 API SE or SF (check manual for exact specification)
Oil Capacity:
Approx. 1.5 - 1.8 liters (depending on filter change, confirm in manual)
Overall Length:
Approx. 2,200 mm (varies slightly, confirm in manual)
Overall Width:
Approx. 820 mm (varies slightly, confirm in manual)
Overall Height:
Approx. 1,190 mm (varies slightly, confirm in manual)
Wheelbase:
Approx. 1,430 mm (confirm in manual)
Ground Clearance:
Approx. 255 mm (confirm in manual)
Dry Weight:
Approx. 118 kg (confirm in manual)
Wet Weight:
Approx. 125 kg (approx. with fluids, confirm in manual)
Fuel Tank Capacity:
Approx. 10 liters (including reserve, confirm in manual)
Crash Safety Standards:
Not applicable for motorcycles in the same way as cars; focus on build integrity and protective features.
Braking System:
Disc brakes front and rear for effective stopping power.
Lighting:
Headlight, tail light, brake light, and turn signals for visibility and signaling.
Chassis Design:
Robust frame designed for off-road abuse and stability.
Ergonomics:
Designed for rider control and comfort during varied riding conditions.
Engine Oil Change:
Every 2,000 - 4,000 km or 6 months, whichever comes first (refer to manual for precise interval).
Oil Filter Replacement:
Concurrent with oil changes.
Air Filter Cleaning:
Every 1,000 - 2,000 km or as needed based on operating conditions (especially dusty environments).
Spark Plug Inspection:
Every 4,000 - 6,000 km.
Chain Lubrication Adjustment:
Every 500 - 1,000 km, or as needed.
Valve Clearance Check:
Every 8,000 - 12,000 km (critical for engine health).
Engine Oil:
SAE 10W-40 API SE or SF (verify in manual).
Coolant:
Ethylene glycol-based coolant with corrosion inhibitors (typically 50/50 mix with distilled water).
Brake Fluid:
DOT 3 or DOT 4 hydraulic brake fluid (confirm exact type in manual).
Carburetor Tuning:
Can be sensitive to altitude and atmospheric changes, requiring occasional re-jetting or adjustment for optimal performance.
Suspension Seals:
Fork seal leaks can occur with aggressive off-road use, requiring periodic inspection and potential replacement.
Cam Chain Tensioner:
Some older models may have had issues with automatic cam chain tensioners becoming noisy or failing; manual will detail inspection and manual tensioner conversion if applicable.
