Segment:
High-performance sport ATV.
Target Audience:
Enthusiasts and owners focused on performance, trail riding, and recreational use.
Key Competitors:
Honda TRX450R, Suzuki LT-R450, Bombardier/Can-Am DS450.
Vehicle Selling Points:
Powerful 686cc engine, lightweight chassis, long-travel suspension, electric start, aggressive styling.
Owner Benefit:
Empowers owners to perform maintenance, diagnose issues, and conduct repairs confidently, reducing reliance on dealership service and extending the vehicle's lifespan.
Engine:
Comprehensive coverage of the 686cc liquid-cooled, SOHC, 4-valve, four-stroke engine.
Fuel System:
Detailed diagnostics and repair procedures for the fuel injection system (throttle body, injectors, fuel pump, sensors).
Transmission:
Repair and maintenance of the 5-speed manual transmission with reverse.
Drivetrain:
Front and rear drive shaft, differentials, and axle components.
Suspension:
Front and rear suspension systems, including shocks, springs, control arms, and linkages.
Brakes:
Front and rear hydraulic disc brake systems, including caliper service, rotor replacement, and bleeding procedures.
Electrical System:
Wiring diagrams, troubleshooting for ignition, starting, lighting, charging system (stator, regulator/rectifier, battery).
Cooling System:
Radiator, fan, water pump, thermostat, and coolant flow diagnostics.
Lubrication System:
Engine oil, transmission oil, and final drive oil change procedures and capacities.
Exhaust System:
Exhaust pipe, muffler, and catalytic converter maintenance and inspection.
Body Chassis:
Frame, body panels, seat, handlebars, and footpegs.
Scheduled Maintenance:
Detailed maintenance schedules and procedures for routine servicing.
Troubleshooting:
Systematic diagnostic procedures for identifying and resolving common and complex issues.
Engine Repair:
Complete engine disassembly, inspection, repair, and reassembly procedures.
Transmission Repair:
Gearbox overhaul, clutch inspection and replacement.
Electrical Diagnostics:
Component testing, wiring harness repair, and sensor calibration.
Brake Service:
Bleeding, pad replacement, caliper rebuilding, and rotor resurfacing/replacement.
Suspension Adjustment:
Preload, compression, and rebound damping adjustments and component replacement.
Fuel System Cleaning:
Injector cleaning and fuel system component cleaning and testing.
Tire Wheel Service:
Tire mounting, balancing, and wheel bearing maintenance.
Torque Specifications:
Precise torque values for critical fasteners across all systems.
Depth:
Comprehensive, suitable for professional technicians and advanced DIY mechanics.
Scope:
Covers routine maintenance, diagnostics, component-level repair, and complete unit overhauls.
Engine Type:
686cc liquid-cooled, SOHC, 4-stroke, 4-valve, single-cylinder.
Bore X Stroke:
102 mm x 84 mm
Horsepower Est:
Approx. 50-55 HP (stock, varies by market and specific tune)
Torque Est:
Approx. 45-50 lb-ft (stock)
Fuel Delivery:
Electronic Fuel Injection (EFI) with 44mm throttle body.
Fuel Type:
Unleaded gasoline (minimum 87 octane recommended).
Ignition System:
Digital TCI (Transistor Controlled Ignition) with electronic advance.
Oil Type Engine:
Yamalube 4 (or equivalent) SAE 10W-40, API SG or higher.
Oil Capacity Engine W Filter:
Approx. 2.4 Liters (2.5 US qt)
Transmission Type:
Constant-mesh 5-speed sequential manual with reverse.
Clutch:
Wet, multiple-disc, heavy-duty.
Drivetrain Type:
O-ring chain, sealed.
Final Drive:
Shaft drive to rear differential.
Transmission Oil Type:
Yamalube Gear Oil (or equivalent) SAE 80 GL-4.
Transmission Oil Capacity:
Approx. 0.7 Liters (0.74 US qt)
Length:
Approx. 72.6 in (1845 mm)
Width:
Approx. 45.1 in (1145 mm)
Height:
Approx. 43.7 in (1110 mm)
Wheelbase:
Approx. 50.4 in (1280 mm)
Dry Weight:
Approx. 421 lbs (191 kg)
Fuel Capacity:
Approx. 2.9 gallons (11 Liters)
Front Tire Size:
AT22x7R10
Rear Tire Size:
AT20x10R9
Front Suspension Travel:
Approx. 9.5 inches (241 mm)
Rear Suspension Travel:
Approx. 11.0 inches (279 mm)
Atv Safety Classification:
Sport ATV (designed for experienced riders).
Braking System:
Hydraulic disc brakes front and rear for reliable stopping power.
Throttle Governor:
Not equipped (inherent to sport ATVs, requires rider skill).
Frame Construction:
Lightweight steel frame for agility and strength.
Handguards:
Standard handlebar guards for protection.
Footpegs:
Wide, serrated footpegs with heel guards for secure footing.
Engine Oil Change:
Every 100 hours or 6 months, whichever comes first (refer to manual for specific conditions).
Air Filter Cleaning:
Every 20 hours or 3 months, or more frequently in dusty conditions.
Spark Plug Inspection:
Every 100 hours or 12 months.
Valve Clearance Check:
Every 200 hours or 24 months.
Coolant Type:
Yamaha Super Coolant (or equivalent) - 50/50 mix of ethylene glycol and distilled water.
Brake Fluid Type:
DOT 3 or DOT 4 hydraulic brake fluid.
Common Wear Items:
Brake pads, tires, drive chain, sprockets, suspension bushings, wheel bearings.
Potential Engine Issues:
Carburation issues (on earlier models not covered here), potential for valve seat wear with extreme use, occasional starter clutch issues.
Potential Electrical Issues:
Faulty regulator/rectifier, intermittent wiring connections.
Oil Filter Part Number:
Yamaha part number 5TA-13440-00-00 (or equivalent aftermarket).
Air Filter Part Number:
Yamaha part number 1S3-14451-00-00 (or equivalent aftermarket).
