Segment:
High-performance, utility-focused All-Terrain Vehicle (ATV).
Target Audience:
Enthusiasts, landowners, hunters, and recreational riders seeking a powerful, reliable, and capable ATV for challenging terrain.
Competitors:
Competes with models from Honda (e.g., Foreman, Rubicon), Polaris (e.g., Sportsman), Kawasaki (e.g., Brute Force), and Can-Am (e.g., Outlander).
Engine Power:
Proven 686cc engine known for its torque and reliability.
Drivetrain Technology:
Industry-leading On-Command 3-way locking differential system for superior traction control.
Suspension Capability:
Long-travel independent front and rear suspension for a smooth ride over rough terrain.
Durability:
Robust build quality and components designed for demanding off-road use.
Engine:
Comprehensive coverage including disassembly, inspection, repair, and reassembly of the 686cc liquid-cooled, DOHC, 4-valve engine, including piston, cylinder, crankshaft, camshaft, valves, cooling system, lubrication system, and fuel injection.
Transmission:
Detailed procedures for the Ultramatic automatic transmission system, including belt inspection and replacement, clutch assembly, and torque converter operation.
Drivetrain:
In-depth coverage of the On-Command 3-way drivetrain system (2WD, 4WD, 4WD with differential lock), including front and rear differential servicing, driveshafts, CV joints, and final drive units.
Suspension:
Complete maintenance and repair procedures for the independent front suspension (double A-arm) and rear swingarm with shock absorber, including shock absorber adjustment, fork seal replacement, and alignment.
Brakes:
Detailed information on the hydraulic disc brake system, including caliper servicing, brake pad replacement, master cylinder maintenance, brake fluid bleeding, and parking brake adjustment.
Electrical System:
Extensive coverage of the electrical system, including wiring diagrams, battery maintenance, charging system (stator, regulator/rectifier), starter motor, ignition system, lighting, and electronic control units (ECU).
Fuel System:
Comprehensive guide to the fuel injection system, including throttle body servicing, fuel pump, fuel filter replacement, and troubleshooting fuel delivery issues.
Cooling System:
Detailed procedures for radiator maintenance, coolant replacement, fan operation, and thermostat servicing.
Exhaust System:
Information on exhaust pipe inspection, muffler servicing, and related components.
Body And Frame:
Guidance on body panel removal and installation, fender servicing, seat maintenance, and frame inspection.
Routine Maintenance:
Complete schedule and instructions for oil changes, filter replacements, air filter cleaning/replacement, spark plug servicing, and lubrication points.
Troubleshooting:
Extensive diagnostic flowcharts and symptom-based troubleshooting guides for common mechanical and electrical issues.
Repair And Rebuild:
Step-by-step instructions for complete disassembly, repair, and reassembly of all major components and systems.
Diagnostic Procedures:
Guidance on using diagnostic tools, checking sensor readings, and interpreting error codes (if applicable).
Assembly And Disassembly:
Detailed instructions for safely taking apart and putting back together all mechanical and electrical assemblies.
Depth:
Comprehensive technical depth, suitable for both professional technicians and experienced DIY mechanics. Covers everything from basic fluid checks to complete engine and transmission overhauls.
Accuracy:
Official factory specifications and procedures ensure the highest level of accuracy and reliability for repairs.
Engine Type:
686cc liquid-cooled, DOHC, 4-stroke, 4-valve, single-cylinder
Bore X Stroke:
100.0 mm x 83.9 mm
Fuel Induction:
Mikuni 44mm throttle body with EFI (Electronic Fuel Injection)
Ignition System:
TCI (Transistor Controlled Ignition) with electronic advance
Horsepower:
Approx. 45-50 HP (estimated, varies by region/tuning)
Torque:
High torque output for low-speed crawling and pulling power.
Fuel Type:
Unleaded gasoline (91 octane or higher recommended)
Fuel Tank Capacity:
4.0 gal (15 L)
Engine Oil Change:
Every 1,000 miles (1600 km) or 6 months, whichever comes first. More frequently under severe use.
Air Filter Cleaning:
Clean every 6 months or 3,000 miles (4800 km), or more often in dusty conditions.
Spark Plug Replacement:
Replace every 6,000 miles (9,600 km) or 24 months.
Transmission Belt Inspection:
Inspect every 1,000 miles (1600 km) or 6 months for wear and damage.
Engine Oil Type:
Yamalube 4 (10W-40) or equivalent API SG, SF, SH, SJ, SL, SM or SN, JASO Standard MA.
Engine Oil Capacity:
2.20 US qt (2.08 L) without filter change; 2.32 US qt (2.2 L) with filter change.
Coolant Type:
Yamaha Super Coolant or equivalent (50/50 mixture of ethylene glycol based antifreeze and distilled water).
Brake Fluid Type:
SAE J1703 or DOT 3.
Common Wear Items:
Regular maintenance of the CVT belt, drive belts, suspension components, and brake pads is crucial due to the demanding nature of ATV use.
Electrical Connectors:
Inspection and cleaning of electrical connectors can prevent minor electrical gremlins.
