Motorcycle Segment:
High-performance motocross competition motorcycle.
Key Competitors Era:
Yamaha YZ250, Honda CR250R, Suzuki RM250.
Engine Type:
2-stroke, liquid-cooled, single-cylinder.
Suspension Design:
Advanced USD front forks and Uni-Trak rear suspension for superior handling and adjustability.
Intended Use:
Off-road racing and aggressive recreational riding.
Diy Repair Benefit:
Enables cost savings by empowering owners to perform maintenance and repairs themselves.
Ease Of Use:
Features easy-to-follow, step-by-step instructions with numerous pictures and diagrams.
Engine System:
Detailed coverage of the 2-stroke engine, including disassembly, inspection, assembly, and tuning.
Fuel System:
Covers carburetor settings, fuel delivery, and throttle body operation.
Ignition System:
Includes spark plug specifications, ignition timing, and CDI unit information.
Cooling System:
Details of the liquid cooling system, including radiator, water pump, and coolant specifications.
Exhaust System:
Information on the expansion chamber, muffler, and any associated components.
Chassis System:
Covers frame, swingarm, linkages, and mounting points.
Suspension System:
Front fork (e.g., USD cartridge forks) and rear shock absorber (e.g., Uni-Trak) adjustments, service, and specifications.
Brake System:
Front and rear disc brake system service, fluid specifications, and pad replacement.
Wheel And Tire System:
Wheel bearing service, tire pressure recommendations, and spoke tension.
Electrical System:
Wiring diagrams, lighting, battery maintenance, and fuse specifications.
Emission Control:
Information related to emission control components and their service, if applicable to the model.
Periodic Maintenance:
Scheduled maintenance tasks, including oil changes, filter replacements, chain adjustment, and general inspections.
Troubleshooting:
Diagnostic procedures for common problems and fault finding.
Engine Rebuild:
Step-by-step instructions for complete engine disassembly, rebuilding, and reassembly.
Suspension Service:
Front fork oil changes, seal replacement, and rear shock servicing.
Brake System Service:
Bleeding procedures, caliper service, and master cylinder maintenance.
Electrical Diagnostics:
Troubleshooting electrical circuits and components.
Cleaning And Lubrication:
Guidelines for cleaning the motorcycle and lubricating moving parts.
Depth Level:
Professional Dealership Level - detailed enough for certified technicians.
Diagnostic Capability:
Advanced diagnostics for engine performance, electrical faults, and fuel system issues.
Repair Scope:
Covers everything from routine maintenance to complete component overhauls and engine rebuilds.
Engine Configuration:
2-stroke, Liquid-Cooled, Single-Cylinder
Bore X Stroke:
Not explicitly stated, but typical for a 250cc 2-stroke of this era.
Compression Ratio:
Not explicitly stated.
Carburetor:
Likely a Keihin PWK carburetor (e.g., 38mm), but specific model not detailed in product info.
Ignition:
Digital CDI (Capacitor Discharge Ignition)
Lubrication:
Premix (Fuel/Oil) and separate transmission oil.
Horsepower:
Typically in the range of 45-50 HP, but exact figures not provided.
Torque:
Not explicitly stated.
Fuel Type:
Unleaded gasoline with 2-stroke oil mix.
Fuel Tank Capacity:
Likely around 7-8 liters (approx. 1.8-2.1 gallons).
Overall Length:
Not explicitly stated, but typical for a 250cc motocross bike.
Overall Width:
Not explicitly stated.
Overall Height:
Not explicitly stated.
Wheelbase:
Not explicitly stated, but typically around 57-59 inches.
Ground Clearance:
Not explicitly stated, but designed for high clearance.
Dry Weight:
Around 210-215 lbs (95-98 kg), but exact figure not provided.
Wet Weight:
Not explicitly stated.
Oil Change Interval:
Typically every 10-15 hours of riding, or as specified in the manual.
Air Filter Cleaning:
Frequent cleaning and re-oiling recommended, often after every few rides or in dusty conditions.
Chain Lubrication Adjustment:
Regularly, typically every 5-10 hours of riding, depending on conditions.
Top End Rebuild:
Recommended every 30-50 hours of riding, depending on usage intensity.
Transmission Oil:
Kawasaki specifies specific gear oil for the transmission, e.g., SAE 80W-90.
Coolant Type:
High-quality ethylene glycol-based antifreeze coolant, usually a 50/50 mix with distilled water.
Brake Fluid:
DOT 4 hydraulic brake fluid.
2 Stroke Oil:
High-quality 2-stroke racing oil recommended for pre-mix (e.g., castor-based or synthetic).
Common Wear Items:
Clutch plates, piston rings, top-end bearings, fork seals, chain and sprockets.
Performance Tuning Considerations:
Jetting adjustments for carburetor are critical for optimal performance and engine longevity.
Kawasaki Motorcycle Legacy:
Kawasaki has a long and successful history in motocross racing, with the KX line being a dominant force for decades.
Kx Series Development:
The KX250 has undergone continuous development, with significant chassis and engine updates throughout its production run.
Kx250 Production Years:
The KX250 (2-stroke) was produced for many years, with significant updates in 2005-2007 that are highly regarded.
Motocross Performance Awards:
The KX250 model line has consistently been recognized for its strong performance and competitive edge in motocross racing throughout its history.
Industry Reviews:
Well-received by motocross publications and riders for its potent engine and capable chassis during its production era.
Emission Compliance Certification:
N/A - Competition off-road motorcycles are generally not subject to the same emission regulations as street-legal vehicles.
