Category:
High-performance Motocross / Off-Road Motorcycle
Competitors:
Yamaha YZ250F, Honda CRF250R, Suzuki RM-Z250, KTM 250 SX-F
Features Of Vehicle:
Lightweight chassis, powerful engine, advanced suspension, fuel injection for improved throttle response and power delivery.
User Base:
Motocross racers, off-road enthusiasts, and mechanics specializing in performance motorcycles.
Primary Coverage:
Service, Repair, Workshop
Secondary Coverage:
Troubleshooting, Maintenance, Overhaul
Estimated Pages:
Likely 300-500 pages (typical for a comprehensive motorcycle service manual)
Type:
Service Manual / Repair Manual / Workshop Manual
Engine:
Complete engine overhaul, lubrication system, cooling system, fuel injection system (EFI), ignition system, starting system, exhaust system, engine disassembly/reassembly.
Transmission:
Clutch operation and overhaul, gearbox disassembly and reassembly, gearshift mechanism.
Chassis:
Frame, front fork (suspension), rear shock absorber (suspension), steering system, swingarm, wheel bearings, spoke tensioning.
Brakes:
Front and rear brake system (hydraulic disc), brake caliper overhaul, brake fluid replacement, brake line routing.
Electrical:
Wiring diagrams, battery, ignition system components, lighting system, sensors, EFI control unit (ECU), diagnostic connectors.
Bodywork:
Body panel removal and installation, seat, fuel tank, plastics.
Maintenance:
Oil change intervals, filter replacement, chain adjustment, spark plug replacement, air filter cleaning/replacement, valve clearance inspection/adjustment.
Troubleshooting:
Diagnosis of common performance issues, electrical faults, starting problems, engine noises, suspension malfunctions.
Repair:
Step-by-step instructions for component replacement, seal and gasket replacement, bearing replacement, major engine component rebuilds.
Assembly:
Detailed torque specifications for all critical fasteners, assembly sequences for complex components.
Depth:
Comprehensive, covering from basic routine maintenance to full engine and chassis overhauls. Suitable for professional mechanics and experienced DIY enthusiasts.
Engine Type:
4-stroke, DOHC, 4-valve
Bore X Stroke:
77.0 mm x 53.0 mm (typical for this generation)
Cooling System:
Liquid-cooled
Horsepower:
Estimated 38-42 HP (at crankshaft, typical for class)
Torque:
Estimated 20-22 lb-ft (at crankshaft, typical for class)
Fuel Delivery:
Digital Fuel Injection (DFI) with dual injectors (primary and secondary)
Fuel Type:
Unleaded gasoline, 91 octane or higher recommended
Spark Plug:
NGK CR9E (or equivalent, consult manual for exact spec)
Lubrication Type:
Semi-dry sump
Oil Capacity With Filter:
Approx. 1.2 - 1.5 Liters (Consult manual for exact figure and oil type)
Length:
Approx. 85.3 in (2165 mm)
Width:
Approx. 32.1 in (815 mm)
Height:
Approx. 49.2 in (1250 mm)
Wheelbase:
Approx. 58.3 in (1480 mm)
Curb Weight:
Approx. 232.7 lbs (105.6 kg)
Dry Weight:
Approx. 216.1 lbs (98.0 kg)
Front Suspension Travel:
Approx. 12.4 in (315 mm)
Rear Suspension Travel:
Approx. 12.4 in (315 mm)
Features:
N/A (Pure performance-oriented off-road motorcycle with no infotainment systems).
Features:
N/A (Focus is on rider input and mechanical feedback, not electronic driver aids).
Efi System:
Advanced Digital Fuel Injection (DFI) system with dual injectors and a 32-bit ECU for precise fuel metering and ignition timing, offering excellent throttle response and a broad powerband.
Ignition System:
Digital CDI (Capacitor Discharge Ignition) with electronic advance, optimized for the EFI system.
Front Fork:
Showa Separate Function Fork (SFF) or similar advanced upside-down telescopic fork, offering separate damping and spring functions for optimized performance and adjustability.
Rear Shock:
Showa rear shock absorber with adjustable rebound, compression, and preload for fine-tuning to track conditions and rider preference.
Engine Oil Change:
Every 8-10 hours of riding or annually (refer to manual for precise interval based on usage).
Air Filter Cleaning:
After every few rides, or as conditions dictate (e.g., dusty conditions).
Chain Lubrication Adjustment:
Every 5-8 hours of riding or after wet rides.
Valve Clearance Check:
Every 15-20 hours of riding or annually (critical for performance).
Engine Oil Type:
Full synthetic 10W-40 motorcycle oil (API SG or higher, JASO MA certified is recommended).
Coolant Type:
Permanent type anti-freeze (e.g., ethylene glycol based) with corrosion inhibitors, mixed with distilled water (50/50 ratio is typical).
Brake Fluid Type:
DOT 4 hydraulic brake fluid.
Common Wear Items:
Clutch plates, piston rings, valve seats, fork seals, wheel bearings, chain and sprockets are common wear items in high-performance motocross applications.
Efi System Considerations:
Regular cleaning of fuel injectors and throttle body is important for optimal EFI performance. The 2010 model's EFI system requires precise calibration for peak performance.
Brand Focus:
Kawasaki has a long-standing history in motorcycle racing, particularly in motocross and supercross, with a reputation for producing potent and competitive machinery.
Kx Lineage:
The KX250F is part of Kawasaki's renowned KX line, which has consistently evolved with advancements in engine technology, chassis design, and suspension performance to meet the demands of professional racing.
Production Era:
The 2010 model represents a significant iteration in the development of the four-stroke KX250F, building upon previous generations and incorporating new technologies.
Motorsport Achievements:
The KX250F platform has consistently been a front-runner in professional motocross and supercross championships, earning numerous race wins and titles for Kawasaki. Specific awards for the 2010 model would be performance-based within racing series.
Editorial Reviews:
Generally received positive reviews from motorcycle publications for its potent engine, agile handling, and advanced suspension for its time.
