Category:
Motocross Competition Motorcycle
Target Audience:
Motocross racers, track day enthusiasts, and advanced mechanics.
Competitors:
Yamaha YZ250F, Honda CRF250R, Suzuki RM-Z250, KTM 250 SX-F.
Engine Type:
High-revving, liquid-cooled, DOHC, four-valve, four-stroke single-cylinder.
Chassis Design:
Advanced perimeter frame, designed for rigidity and mass centralization.
Suspension:
Industry-leading Kayaba PSF (Pneumatic Spring Fork) and Kayaba rear shock, offering superior adjustability and performance.
Fueling:
Digital fuel injection for optimal power delivery, throttle response, and fuel efficiency.
Engine:
Complete engine disassembly, assembly, inspection, and repair procedures for the 249cc liquid-cooled, four-stroke engine.
Fuel System:
Fuel injection system (EFI), throttle body, fuel pump, injectors, fuel tank, fuel lines, and pressure regulation.
Cooling System:
Radiator, coolant hoses, water pump, thermostat, and coolant flow diagnostics.
Ignition System:
ECU (Engine Control Unit), ignition coil, spark plug, and related wiring.
Transmission:
Clutch assembly, gear shifting mechanism, internal transmission components, gear ratios, and lubrication.
Suspension Front:
Front fork (kayaba twin-chamber), internal components, seals, oil levels, damping adjustments, and fork leg maintenance.
Suspension Rear:
Rear shock absorber (kayaba), linkage system, spring pre-load adjustment, damping adjustments, and rear shock maintenance.
Brakes:
Front and rear hydraulic disc brakes, brake calipers, master cylinders, brake lines, brake fluid specifications, bleeding procedures, and pad replacement.
Electrical System:
Wiring diagrams, battery, stator, lighting system, starter motor, fuses, relays, and diagnostic connectors.
Chassis Frame:
Frame inspection, steering head bearings, swingarm, and rear suspension linkage maintenance.
Wheels Tires:
Wheel bearing inspection and replacement, tire pressure recommendations, and spoke tensioning.
Controls:
Throttle cable adjustment, clutch cable adjustment, shifter operation, and handlebar components.
Maintenance:
Regular maintenance, oil changes, filter replacements, chain adjustment, air filter cleaning, spark plug replacement, and valve clearance checks.
Troubleshooting:
Diagnostic procedures for common problems, fault code interpretation (if applicable), and systematic problem-solving guidance.
Repair:
Detailed step-by-step instructions for component disassembly, repair, and reassembly.
Disassembly Assembly:
Complete guides for engine, transmission, suspension, and chassis component removal and installation.
Specifications Settings:
Torque specifications for all fasteners, clearance measurements, and adjustment procedures.
Electrical Diagnostics:
Wiring harness testing, component testing, and troubleshooting electrical faults.
Depth:
Factory-level technical information for professional technicians and experienced DIY enthusiasts.
Detail Level:
Highly detailed illustrations, exploded views, and clear, concise instructions.
Scope:
Covers everything from basic maintenance to complete engine rebuilds and advanced diagnostics.
Engine Type:
Liquid-cooled, four-stroke, DOHC, four-valve, single cylinder
Bore X Stroke:
77.0 x 53.7 mm
Compression Ratio:
13.2:1
Valve Train:
DOHC, 4 valves
Horsepower:
Estimated 39-42 HP (specific figures vary and are best confirmed via dyno charts or official Kawasaki specs).
Torque:
Estimated 20-22 lb-ft (specific figures vary).
Fuel Delivery:
Digital Fuel Injection (DFI) with 43mm Keihin throttle body
Fuel Type:
Unleaded premium gasoline
Oil Type:
SAE 10W-40 motorcycle specific oil with Jaso MA certification.
Infotainment System:
N/A (Competition Off-Road Motorcycle - no infotainment features)
Electronic Aids:
N/A (Competition Off-Road Motorcycle - no electronic rider aids like traction control or ABS)
Connectivity Features:
N/A (Competition Off-Road Motorcycle - no connectivity features)
Efi System:
Digital Fuel Injection (DFI) with ECU control for optimized engine mapping.
Launch Control:
N/A for this model year; typically introduced in later iterations.
Engine Mapping Adjustment:
May support optional ignition timing couplers for different track conditions (refer to manual or accessories).
Oil Change:
Every 15-20 hours of riding or as specified in the manual.
Air Filter:
Clean/replace after every few rides or as conditions dictate.
Spark Plug:
Inspect and clean/replace per manual recommendations (e.g., every 20-30 hours).
Chain Lubrication:
Lubricate chain every ride; adjust tension as needed per manual.
Valve Clearance:
Inspect and adjust every 20-30 hours of riding.
Engine Oil Capacity:
Refer to manual; typically around 0.7-0.8 liters (with filter change).
Coolant Type:
Permanent type antifreeze coolant, 50% mixture with distilled water.
Brake Fluid:
DOT 4 hydraulic brake fluid.
Common Wear Items:
Clutch plates, piston, piston rings, valve seats, wheel bearings, fork seals, and chain/sprockets are common wear items on performance motocross bikes.
Maintenance Importance:
Adherence to the maintenance schedule is critical for peak performance and longevity due to the high-stress environment of motocross.