Classification:
High-performance sport ATV.
Target Audience:
Enthusiasts, recreational riders, competitive off-road racers.
Key Competitors:
Honda TRX450R, Suzuki QuadRacer LTR450, Polaris Outlaw 525.
Engine Type:
Powerful liquid-cooled, DOHC, 4-stroke single.
Suspension:
Long-travel, independent front suspension and a progressive rear swingarm.
Transmission:
5-speed manual with reverse.
Brakes:
Hydraulic disc brakes front and rear.
Styling:
Aggressive, sport-oriented design.
Engine:
Complete engine overhaul, disassembly, inspection, assembly, troubleshooting, specifications.
Fuel System:
Fuel injection system (EFI) components, fuel pump, injectors, throttle body, ECU, troubleshooting.
Transmission:
Clutch system, gearbox, lubrication, troubleshooting, repair procedures.
Drivetrain:
Shaft drive, differential, axle components, maintenance, inspection.
Suspension:
Front and rear suspension systems, shocks, A-arms, adjustments, rebuild procedures.
Brakes:
Hydraulic brake system, calipers, master cylinders, brake lines, bleeding procedures, troubleshooting.
Electrical System:
Ignition system, starting system, charging system, battery, lighting, wiring diagrams, component testing.
Cooling System:
Radiator, fan, water pump, coolant specifications, troubleshooting.
Chassis Frame:
Frame inspection, disassembly, reassembly, torque specifications.
Steering System:
Handlebar, steering shaft, tie rods, adjustments, repair.
Bodywork:
Plastic panels, seat, fenders, removal and installation procedures.
Preventive Maintenance:
Detailed oil change intervals, filter replacements, lubrication points, inspections.
Troubleshooting:
Systematic diagnostic procedures for common and uncommon problems, symptom-based troubleshooting charts.
Repair:
Step-by-step instructions for component removal, repair, and reinstallation for all major systems.
Disassembly Assembly:
Complete breakdown and reassembly instructions for the entire ATV.
Specifications Data:
Torque values, clearances, fluid capacities, electrical specifications, engine timing.
Wiring Diagrams:
Comprehensive electrical schematics for all circuits and components.
Depth:
Comprehensive factory-level detail suitable for professional technicians and experienced DIY enthusiasts.
Diagnostics:
In-depth diagnostic procedures, fault code interpretation (if applicable), and testing methods.
Rebuilds:
Detailed instructions for complete engine, transmission, and suspension component rebuilds.
Engine Type:
4-stroke, liquid-cooled, DOHC, 5-valve, single-cylinder.
Bore X Stroke:
100.0 mm x 84.0 mm
Horsepower:
Approx. 50-55 HP (manufacturer estimated, actual may vary based on tuning and conditions)
Torque:
Approx. 45-50 lb-ft (manufacturer estimated)
Fuel Delivery:
Electronic Fuel Injection (EFI) with twin-spray injectors.
Fuel Type:
Unleaded gasoline, 87 octane or higher.
Transmission Type:
Constant-mesh 5-speed with reverse.
Clutch Type:
Wet, multi-plate clutch.
Gear Ratios:
Specific ratios detailed in manual (e.g., 1st: 2.714, 2nd: 1.882, 3rd: 1.500, 4th: 1.273, 5th: 1.045)
Final Drive:
O-ring sealed chain, 520 pitch.
Lubrication:
Engine oil lubrication for clutch and gearbox.
Display:
Digital LCD multi-function meter displaying speedometer, odometer, tripmeter, clock, and engine hour meter.
Traction Control:
None (This model relies on rider skill and tire traction).
ECU:
Engine Control Unit (ECU) manages fuel injection, ignition timing, and other engine parameters.
Efi Tuning:
The manual would provide specifications for optimizing the EFI system, and potentially information relevant to aftermarket tuning devices.
Engine Oil Change:
Every 20 hours or 6 months (whichever comes first).
Oil Filter Replacement:
Every 20 hours or 6 months (concurrently with oil change).
Air Filter Cleaning:
Every 10 hours or as needed depending on conditions.
Spark Plug Inspection:
Every 40 hours or 12 months.
Valve Clearance Check:
Every 40 hours or 12 months.
Engine Oil:
Yamalube 4 (10W-40) or equivalent API SG or higher, JASO MA certified oil. Refer to manual for specific viscosity recommendations based on temperature.
Coolant:
Permanent type antifreeze coolant, 50/50 mix with distilled water. Refer to manual for Yamaha specific P/N.
Brake Fluid:
DOT 3 or DOT 4 hydraulic brake fluid.
Common Problems:
While generally robust, potential issues can include occasional electrical connector corrosion in wet environments, wear on suspension components due to aggressive riding, and clutch wear under extreme use. EFI systems are generally reliable but require clean fuel.
Maintenance Tips:
Regular cleaning of the air filter, proper chain maintenance, and adherence to service intervals are crucial for longevity. Checking for loose fasteners and electrical connections is also advised.