Segment:
Performance Enduro Motorcycle
Target Audience:
Enthusiast riders, off-road competitors, and DIY mechanics seeking in-depth service information.
Key Competitors:
KTM EXC series, Yamaha WR250F, Honda CRF250X, Kawasaki KLX250S.
Offroad Capability:
Designed for aggressive off-road riding with durable components and capable suspension.
Dual Sport Versatility:
Street-legal components allowing for transition between off-road trails and public roads.
Completeness:
Official factory documentation ensures accuracy and thoroughness for all service and repair tasks.
Usability:
Downloadable format allows for easy access and printing of relevant sections for on-the-go use.
Engine Coverage:
Detailed breakdown of engine components, assembly, disassembly, inspection, and repair procedures for the 250cc engine.
Fuel System Coverage:
Carburetor (likely Mikuni or Keihin) tuning, cleaning, and overhaul; fuel pump (if applicable), fuel tank, and lines.
Ignition System Coverage:
Ignition timing, coil, CDI unit, spark plug specifications, and troubleshooting.
Cooling System Coverage:
Radiator, fan, coolant type, coolant capacity, and related component maintenance.
Transmission Coverage:
Gearbox internal components, shifting mechanism, clutch operation, and fluid specifications.
Chassis Suspension Coverage:
Front fork (USD WP or Marzocchi likely) service, seals, oil levels, and rear shock absorber overhaul and adjustment.
Braking System Coverage:
Front and rear brake caliper maintenance, piston seals, brake pad replacement, master cylinder service, and hydraulic fluid specifications.
Electrical System Coverage:
Wiring diagrams, lighting system, battery maintenance, starter motor, and charging system troubleshooting.
Frame Bodywork Coverage:
Frame inspection, fairing removal and installation, seat, and plastic component servicing.
Routine Maintenance Procedures:
Oil changes, filter replacements (air, oil, fuel), chain adjustment and lubrication, spark plug checks, and general inspection points.
Engine Repair Procedures:
Piston and ring replacement, valve clearance adjustment, cylinder head service, crankshaft and connecting rod inspection, seal and gasket replacement.
Transmission Repair Procedures:
Gearbox disassembly and reassembly, bearing replacement, clutch pack service, and seal replacement.
Suspension Overhaul Procedures:
Complete fork and shock absorber rebuild, seal head replacement, and oil and gas charging.
Electrical Troubleshooting Procedures:
Diagnostic steps for common electrical faults, component testing, and wiring harness repair.
Carburetor Rebuild Procedures:
Step-by-step guide for disassembling, cleaning, and reassembling the carburetor with specific jetting information.
Wheel And Tire Service:
Tire mounting and balancing, spoke tensioning, and wheel bearing replacement.
Diagnostic Capabilities:
Covers basic troubleshooting for common issues to advanced diagnostics requiring specific tools and measurements.
Rebuild Scope:
Provides comprehensive instructions for complete engine, transmission, and suspension rebuilds.
Specifications Detail:
Includes critical torque values, clearances, fluid capacities, and material specifications.
Engine Type:
Four-stroke, Single-cylinder
Displacement:
249.5 cc (approximately)
Bore X Stroke:
Specifications available in manual (typical ~76mm x 55mm).
Valve Train:
SOHC, 4 Valves
Horsepower:
Approx. 30-35 HP (unconfirmed, manual will specify)
Torque:
Specifications available in manual
Fuel Delivery:
Carburetor (likely Mikuni TM36 or similar)
Fuel Type:
Unleaded Gasoline (Octane rating specified in manual)
Oil Type:
Motorcycle-specific 4-stroke engine oil (viscosity and API rating specified in manual, e.g., 10W-40 JASO MA)
Oil Capacity:
Approximately 1.0-1.2 liters (specified in manual)
Engine Oil Change:
Every 10-15 hours of riding or annually (typical for off-road use).
Air Filter Cleaning:
Every 5-10 hours or as needed based on dust conditions.
Valve Clearance Check:
Every 20-30 hours of riding.
Engine Oil Spec:
Consult manual for exact viscosity and API/JASO rating (e.g., Motorex or equivalent). Example: SAE 10W-40, API SG or higher, JASO MA.
Fork Oil Type:
Specific grade of suspension fluid (e.g., Motorex Fork Oil 5W or equivalent) with precise level indicated in manual.
Coolant Type:
Ethylene glycol-based coolant (e.g., Motorex Coolant M3.0 or equivalent) mixed with distilled water (50/50).
Brake Fluid Type:
DOT 4 or DOT 5.1 (check manual for exact specification).
Common Wear Items:
Clutch plates, brake pads, wheel bearings, steering head bearings, fork seals, and chain/sprockets.
Potential Electrical Gremlins:
Wiring harness connections, stator output, and rectifier/regulator can be points of failure on older bikes.
Carburetor Tuning Sensitivity:
May require precise jetting for optimal performance at varying altitudes and temperatures.