Category:
Motocross / Off-Road Competition Motorcycle
Target Audience:
Motocross racers, off-road enthusiasts, DIY mechanics
Competitors:
Yamaha YZ450F, Honda CRF450R, Suzuki RM-Z450, KTM 450 SX-F
Vehicle Philosophy:
Performance-oriented, race-proven design
Benefit To Owner:
Enables owners to perform their own repairs and maintenance, saving money and time
Professional Equivalent:
Same manual used by professional technicians and workshops
Primary Coverage:
Repair, Servicing, Preventative Maintenance
Diagnostic Coverage:
Troubleshooting procedures
Rebuild Coverage:
Complete tear down and rebuild
Type:
Service Repair Manual / Workshop Manual
Primary Language:
English
Digital Format:
PDF Download
File Compression:
Potentially Zipped (WinZip/WinRAR required for extraction)
Device Compatibility:
Computers (Windows, Linux, Mac), iPad, Hard Drives
Printing Capability:
Printable from any computer and printer
Delivery Type:
Instant Digital Download
Access Period:
Three days after payment
Engine:
Complete engine assembly, internal components, lubrication, cooling
Fuel System:
Fuel injection system, throttle body, fuel pump, injectors
Ignition System:
Ignition coil, spark plug, ECU (Engine Control Unit)
Transmission:
Gearbox, clutch, shifting mechanisms
Drivetrain:
Chain drive, sprockets, rear wheel hub
Suspension:
Front forks (USD - Upside Down), rear shock absorber, linkages
Brakes:
Front and rear hydraulic disc brakes, master cylinders, calipers, lines
Electrical System:
Wiring diagrams, battery, lighting, starter motor, sensors, ECU
Frame And Bodywork:
Chassis, subframe, fuel tank, seat, body panels, handlebars
Maintenance Procedures:
Scheduled maintenance, oil changes, filter replacements, chain adjustment, lubrication
Repair Procedures:
Engine disassembly/assembly, transmission overhauls, suspension fork servicing, brake bleeding
Troubleshooting Guides:
Step-by-step diagnostic procedures for common and uncommon issues
Inspection Procedures:
Pre-ride checks, wear inspections, component testing
Torque Specifications:
Critical torque values for all fasteners and assemblies
Depth:
Comprehensive (from basic maintenance to full engine rebuilds)
Illustration Quality:
Clear, step-by-step illustrations
Diagrams:
Part diagrams included
Engine Type:
Four-stroke, Single Cylinder, DOHC
Bore X Stroke:
96.0 x 62.1 mm
Cooling System:
Liquid-cooled
Horsepower:
Estimated 50+ HP (factory figures often not published, based on competitive models)
Torque:
Estimated 35+ lb-ft (factory figures often not published, based on competitive models)
Fuel Delivery:
Digital Fuel Injection (DFI) with dual injectors
Throttle Body Size:
43 mm
Ignition:
Digital CDI with variable ignition timing
Oil Type:
Motorcycle-specific 4-stroke engine oil (e.g., SAE 10W-40, API SG or higher, JASO MA)
Oil Capacity:
Approximately 1.0 L (refer to manual for precise capacity)
Type:
5-speed, constant mesh, sequential manual
Clutch Type:
Multi-plate wet clutch
Gear Ratios:
Specific gear ratios detailed in the manual
Transmission Oil:
Refer to manual, typically a separate compartment filled with engine oil or specific gear oil
Overall Length:
Approx. 2,185 mm (86.0 in)
Overall Width:
Approx. 815 mm (32.1 in)
Overall Height:
Approx. 1,275 mm (50.2 in)
Wheelbase:
Approx. 1,475 mm (58.1 in)
Curb Weight:
Approx. 112.5 kg (248.0 lbs) (wet weight)
Fuel Capacity:
Approx. 8.0 L (2.1 US gal)
Front Fork Travel:
315 mm (12.4 in)
Rear Shock Travel:
305 mm (12.0 in)
Safety Features Type:
Motorcycle-specific safety considerations (no formal crash ratings like cars)
Braking System:
Powerful dual hydraulic disc front brakes, single hydraulic disc rear brake
Tire Specifications:
Motocross specific knobby tires (sizes typically 80/100-21 front, 110/100-18 rear)
Frame Construction:
Lightweight aluminum perimeter frame for stability and handling
Infotainment System:
Not applicable (performance-oriented motocross bike)
Electronic Aids:
Primarily focused on engine performance tuning (e.g., ECU mapping, if applicable with aftermarket tuners); no rider assistance systems like ABS or traction control.
Connectivity Features:
Not applicable
ECU Function:
Engine Control Unit (ECU) manages fuel injection timing, ignition timing, and other engine parameters.
Oil Change Interval:
Refer to manual (typically every 15-20 hours of riding for competitive use)
Air Filter Cleaning:
Frequent cleaning/replacement recommended, especially in dusty conditions (refer to manual)
Chain Lubrication Adjustment:
Regularly (refer to manual for specific interval and slack specification)
Engine Oil Specification:
SAE 10W-40, API SG or higher, JASO MA certified
Coolant Specification:
High-quality ethylene glycol-based coolant (50/50 mixture with distilled water), refer to manual for specific type
Brake Fluid Specification:
DOT 4 hydraulic brake fluid
Common Wear Items:
Clutch plates, brake pads, chain and sprockets, air filter, piston rings (typical for high-performance dirt bikes)
Engine Performance Considerations:
Regular valve clearance checks are crucial for optimal performance and engine longevity.
Motocross Wins:
Kawasaki KX models, including the KX450F, have a strong track record of wins in professional motocross and supercross championships.
Industry Reviews:
Generally praised by motocross publications for its powerful engine, stable chassis, and excellent suspension (specific reviews for 2009-2011 models would be detailed in specialized motorcycle media).
