Positioning:
High-performance motocross racing motorcycle, competitive within the 250cc four-stroke class
Competitors:
Yamaha YZ250F, Honda CRF250R, KTM 250 SX-F, Suzuki RM-Z250
Engine Type:
Liquid-cooled, four-stroke, single-cylinder DOHC
Suspension Type:
Advanced front and rear suspension for optimal handling and impact absorption
Chassis:
Lightweight and rigid aluminum perimeter frame
Primary Coverage:
Complete service, repair, and maintenance for the 2010 Kawasaki KX250F
Secondary Coverage:
Includes troubleshooting, diagnostics, electrical systems, and component overhauls
Estimated Page Count:
High (typical for a full service manual, often 300+ pages)
Type:
Professional Service Repair Manual
Language:
English (standard for most official service manuals)
Format:
PDF (Instant Download)
Engine:
Full engine disassembly, assembly, tuning, diagnostics, and repair procedures
Fuel System:
Carburetion system, fuel injection (if applicable for model year), fuel pump, filters, and lines
Ignition System:
CDI unit, coils, spark plug, wiring diagrams, and troubleshooting
Transmission:
Clutch assembly, gearbox, shift mechanism, lubrication, and repair
Suspension:
Front fork (Kayaba/Showa), rear shock absorber (Uni-Trak system), damping adjustments, seal replacement, and oil changes
Brakes:
Front and rear hydraulic disc brakes, caliper service, master cylinder overhaul, pad replacement, and fluid bleeding
Electrical System:
Wiring diagrams, lighting, charging system (if applicable), battery, and troubleshooting
Cooling System:
Radiator, coolant hoses, water pump, and thermostat (if applicable)
Frame And Bodywork:
Frame inspection, body panel removal and installation, seat, handlebars, and footpegs
Routine Maintenance:
Oil changes, filter replacements, chain adjustment, spark plug checks, air filter cleaning/replacement
Component Rebuild:
Engine top-end rebuild (piston, rings, cylinder), cylinder head service, transmission overhaul, suspension fork rebuild
Troubleshooting:
Diagnostic charts, common problems and solutions, electrical system fault finding
Torque Specifications:
All critical fastener torque values for engine, chassis, and suspension components
Special Tools:
Identification and usage of Kawasaki-specific or recommended special tools for repairs
Depth:
Comprehensive from basic maintenance to full engine and chassis overhauls, including advanced diagnostics
Searchability:
Likely text-searchable for efficient information retrieval
Quality:
High resolution, suitable for printing individual pages or the entire manual
Binding:
Not applicable (PDF format)
Paper:
Not applicable (PDF format)
Engine Type:
Liquid-cooled, four-stroke, DOHC, four-valve single cylinder
Displacement:
249 cc (approximate, specific internal codes may vary)
Bore X Stroke:
77.0 x 53.5 mm (typical for this model, verify in manual)
Compression Ratio:
12.5:1 (typical, verify in manual)
Horsepower:
Estimated 38-40 HP (typical for class, specific rating may be in manual)
Torque:
Estimated 19-21 lb-ft (typical for class, specific rating may be in manual)
Carburetor:
Keihin FCR39MX (39mm Flat-slide Carburetor with Accelerator Pump)
Fuel Type:
Unleaded premium gasoline (minimum 91 octane)
Oil Type:
SAE 10W-40 motorcycle oil meeting API SG or SH specifications (verify specific grade and API in manual)
Oil Capacity:
Approximately 0.75 - 0.85 liters (dry fill) (verify in manual)
Transmission Type:
Constant-mesh, 5-speed
Clutch Type:
Wet, multi-disc, cable-operated
Gear Ratios:
Specific ratios for 1st-5th gear will be detailed in the manual
Final Drive:
O-ring sealed chain, 13/50 tooth sprockets (typical, verify in manual)
Transmission Oil Type:
API GL-4, SAE 80W transmission oil (verify specific grade in manual)
Transmission Oil Capacity:
Approximately 0.65 liters (verify in manual)
Length:
Approximately 2165 mm (verify in manual)
Width:
Approximately 800 mm (verify in manual)
Height:
Approximately 1250 mm (verify in manual)
Wheelbase:
Approximately 1475 mm (verify in manual)
Ground Clearance:
Approximately 330 mm (verify in manual)
Curb Weight:
Approximately 103 kg (wet weight without fuel) (verify in manual)
Fuel Tank Capacity:
8.0 liters (verify in manual)
Safety Rating:
Not applicable for off-road competition motorcycles (no government safety ratings)
Braking System:
Powerful dual hydraulic disc brakes for precise stopping power
Tire Grip:
Aggressive off-road tire tread for maximum traction
Frame Design:
Rigid aluminum frame designed for stability and rider control
Ergonomics:
Optimized rider triangle and controls for improved handling and fatigue reduction
Infotainment System:
Not applicable for this competition motocross model.
Assistance Features:
Not applicable for this competition motocross model. Focus is on rider input and mechanical performance.
Connectivity Features:
Not applicable for this competition motocross model.
Carburetor Technology:
Accelerator pump for improved throttle response, flat-slide design for better airflow.
Front Fork Technology:
Large diameter cartridge forks with adjustable compression and rebound damping (typically Kayaba or Showa SFF - Separate Function Fork).
Rear Suspension Technology:
Uni-Trak linkage system with adjustable preload, compression, and rebound damping.
Engine Oil Change:
Every 5-10 hours of riding or annually (depending on usage, refer to manual for precise recommendations)
Air Filter Cleaning:
Before every race or after 2-3 rides in dusty conditions (refer to manual)
Spark Plug Inspection:
Every 10-15 hours of riding (refer to manual)
Chain Adjustment Lubrication:
Every 3-5 hours of riding (refer to manual)
Valve Clearance Check:
Every 15-20 hours of riding (critical for performance, refer to manual)
Engine Oil Specification:
SAE 10W-40, API SG or SH (verify)
Brake Fluid Specification:
DOT 4 hydraulic brake fluid (verify)
Coolant Specification:
High-quality engine coolant (50/50 mixture of distilled water and ethylene glycol based antifreeze) (verify)
Common Issues:
Potential for premature wear on clutch components under hard use, carburetor tuning can be sensitive to altitude and temperature, suspension requires regular maintenance to perform optimally.
Preventative Measures:
Strict adherence to maintenance schedule, using correct fluids and parts, proper jetting for conditions, regular suspension servicing.
Heritage:
Kawasaki has a long and successful history in motocross racing, with the KX line being a dominant force for decades.
Evolution:
The KX250F has seen continuous development, with significant updates to engine performance, suspension technology, and chassis design over the years to remain competitive.
Key Updates 2010:
The 2010 model likely featured refinements to the engine, suspension, and possibly chassis tuning based on previous racing feedback.
Manufacturing Origin:
Typically manufactured in Japan or Thailand by Kawasaki Heavy Industries.
