Market Position:
The Kawasaki KX250F series is a highly competitive motocross motorcycle known for its performance and handling in its era. This manual targets owners seeking to maintain and repair their machines, often DIY enthusiasts or privateer racers looking to save on professional service costs.
Competitive Analysis:
Competitors in this segment during 2004-2007 included models like the Yamaha YZ250F, Honda CRF250R, and KTM 250 SX-F. The KX250F was lauded for its strong mid-range power and capable chassis. Access to a comprehensive service manual like this is crucial for owners to keep these high-performance machines in peak condition.
Key Features:
Official manufacturer documentation, detailed procedures, high-resolution images, organized content for quick information retrieval, comprehensive coverage of all major motorcycle systems.
Target Audience:
Motocross enthusiasts, mechanics, and owners of the Kawasaki KX250F (2004-2007) seeking comprehensive technical guidance for maintenance and repair.
Systems Covered:
General Information, Periodic Maintenance, Fuel System, Cooling System, Engine Top End, Engine Right Side, Engine Lubrication System, Engine Removal/Installation, Crankshaft/Transmission, Wheels/Tires, Final Drive, Brakes, Suspension, Steering, Frame, Electrical System, Appendix
Electrical System Coverage:
Detailed wiring diagrams, component testing, troubleshooting for ignition, lighting (if applicable), and sensors.
Frame And Steering:
Includes inspection, maintenance, and repair of the frame, steering head bearings, and triple clamps.
Procedures Included:
Maintenance, Repair, Troubleshooting, Diagnostics, Reassembly, Component Overhaul, Electrical Schematics, Technical Data
Engine Rebuild Procedures:
Complete disassembly, inspection, component replacement (pistons, rings, valves, bearings), reassembly, and initial break-in procedures.
Suspension Overhaul Procedures:
Fork and shock absorber disassembly, seal replacement, oil changes, and valving adjustments (if applicable).
Fuel System Cleaning And Adjustment:
Detailed instructions for carburetor cleaning, jetting adjustments, and fuel system component inspection.
Technical Depth:
Comprehensive, from basic maintenance to full engine rebuilds and electrical system diagnostics.
Torque Specifications:
Extensive list of all critical torque values for fasteners throughout the motorcycle.
Diagnostic Flowcharts:
Included for common problems, aiding in systematic troubleshooting.
Special Tools:
Lists any specialized tools required for specific maintenance or repair procedures.
Engine Type:
Liquid-cooled, four-stroke, single-cylinder, DOHC, 4-valve
Bore X Stroke:
72.0 x 61.2 mm (for 2004-2005, likely similar for later years; manual will confirm exact specifications)
Displacement:
249cc (approximate, manual will provide exact figure)
Horsepower:
Estimated 37-40 HP (at crankshaft, subject to specific model year and tuning; manual will provide precise figures)
Torque:
Estimated 18-20 lb-ft (at crankshaft, subject to specific model year and tuning; manual will provide precise figures)
Fuel System Type:
Carburetor (Keihin FCR series, manual will specify exact model and jetting details)
Fuel Type:
Unleaded gasoline, minimum 91 octane recommended (manual will specify)
Lubrication Type:
Wet sump
Oil Capacity:
Approximately 0.7-0.8 Liters (manual will specify exact capacity and oil type)
Recommended Oil Grade:
10W-40 or 10W-50 Motorcycle Oil, JASO MA certified (manual will specify)
Cylinder Head Details:
Details on valve train assembly, cam timing, and cylinder head disassembly/reassembly.
Clutch And Transmission Details:
Procedures for clutch removal, inspection, replacement of friction plates and springs, as well as transmission gear inspection and maintenance.
Crankshaft And Transmission Overhaul:
In-depth procedures for crankshaft removal, bearing replacement, connecting rod inspection, and full transmission component overhaul.
Length:
Approx. 2135 mm (manual will provide exact figures)
Width:
Approx. 800 mm (manual will provide exact figures)
Height:
Approx. 1240 mm (manual will provide exact figures)
Dry Weight:
Approx. 94 kg (manual will provide exact figures)
Curb Weight:
Not typically quoted for motocross bikes, but manual may list wet weight.
Suspension Travel:
Front: Approx. 315mm (12.4 in), Rear: Approx. 320mm (12.6 in) (manual will confirm specific measurements)
Wheel Size Front:
21 inches
Wheel Size Rear:
19 inches
Tire Size Front:
80/100-21 (manual will specify recommended pressures)
Tire Size Rear:
100/90-19 or 110/90-19 (manual will specify recommended pressures)
Infotainment Features:
N/A (This is a dedicated motocross competition motorcycle, it does not feature infotainment systems.)
Driver Assistance Features:
N/A (No electronic rider aids or driver assistance systems are present on this model.)
Connectivity Features:
N/A (No connectivity features are present.)
Oil Change Interval:
Every 8-10 hours of riding or annually (manual will provide precise recommendation based on usage type).
Air Filter Cleaning:
Every 4-6 hours of riding, or more frequently in dusty conditions (manual will detail procedure).
Spark Plug Check:
Every 15-20 hours of riding (manual will specify type and gap).
Valve Clearance Check:
Every 20-25 hours of riding (manual will provide specifications and adjustment procedures).
Coolant Type:
High-quality engine coolant, 50/50 mix of antifreeze and distilled water (manual will specify)
Brake Fluid Type:
DOT 4 (manual will specify)
Transmission Oil Type:
Motorcycle-specific transmission oil (manual will specify grade and capacity)
Fork Oil Type:
Specific fork oil viscosity grade (e.g., Showa SS-02, Kayaba KSH-02, or equivalent; manual will specify).
Fork Oil Level:
Specific oil level measurement in mm from the top of the inner tube (manual will specify).
Known Issues:
Potential for carburetor jetting sensitivity to altitude and temperature changes, clutch wear with aggressive use, and normal wear and tear on engine components due to high-performance racing use. The manual will guide through diagnosing and rectifying these.
Brand Heritage:
Kawasaki has a long and storied history in motocross, with the KX line consistently being a benchmark for performance and innovation. The KX250F represents Kawasaki's commitment to the highly competitive 250cc four-stroke motocross class.
Model Evolution:
The KX250F underwent significant development during this period, moving towards a more potent and refined motocross machine. Key advancements often included chassis refinements, engine tuning, and suspension updates to remain competitive.
Production Era:
2004-2007 models represent a specific generation of the KX250F, built for competitive motocross racing.
