Category:
High-performance sport ATV
Target Audience:
Enthusiasts, racers, recreational riders requiring detailed maintenance and repair guidance.
Competitors:
Honda TRX series, Suzuki LT-R series, Kawasaki KFX series.
Model Advantages:
Powerful fuel-injected engine, advanced suspension, lightweight chassis, renowned reliability.
Benefit To Owner:
Empowers owners to perform all levels of maintenance and repair, saving time and money, and ensuring optimal performance and longevity.
Powertrain:
Engine, fuel system, exhaust system, transmission, drivetrain
Chassis:
Frame, suspension (front and rear), steering, wheels, tires
Electrical:
Ignition system, charging system, lighting, starting system, battery, wiring diagrams
Brakes:
Hydraulic brake system (front and rear), brake components, bleeding procedures
Bodywork:
Body panels, fenders, plastics, seating
Controls:
Throttle, clutch, shifter, brake levers
Maintenance:
Regular inspections, lubrication, filter replacement, fluid changes
Troubleshooting:
Diagnostic charts for common problems, symptom-based troubleshooting
Repair:
Engine overhaul, transmission repair, suspension rebuild, electrical component replacement
Disassembly Reassembly:
Step-by-step instructions for component removal and installation
Specifications Data:
Torque specifications, clearances, fluid capacities, electrical values
Suspension Adjustment:
Detailed procedures for adjusting front and rear suspension settings (pre-load, rebound, compression).
Wheel Alignment:
Specifications and checks for wheel alignment and camber.
Carburetor Adjustment:
N/A (EFI model)
Fuel Injector Cleaning:
Procedures for cleaning and testing fuel injectors.
Engine Rebuilding:
Complete overhaul instructions, including piston, ring, valve, and camshaft replacement.
Transmission Rebuilding:
Detailed steps for gearbox disassembly, inspection, and reassembly.
Depth:
Comprehensive: from basic maintenance to full engine and transmission rebuilds, including advanced diagnostics and component-level repairs.
Wiring Diagrams:
Includes comprehensive electrical system wiring diagrams with component identification.
Engine Type:
4-stroke, Single-cylinder, Liquid-cooled, DOHC, 4-valve
Bore X Stroke:
100.0 mm x 83.9 mm
Fueling:
Electronic Fuel Injection (EFI)
Ignition:
TCI (Transistor Controlled Ignition)
Horsepower Estimate:
Approx. 46-50 HP (dependent on specific model year tuning)
Torque Estimate:
Approx. 45-48 lb-ft
Fuel Type:
Unleaded gasoline, 87 octane minimum (RON+MON)/2 = 87
Oil Type:
Yamalube 4G or equivalent, SAE 10W-40 API SG or higher
Coolant Type:
Yamaha's Yamalube Antifreeze or equivalent (50/50 mixture with distilled water)
Transmission Type:
5-speed manual with Reverse
Clutch Type:
Wet, multi-disc
Drive Type:
2WD (Rear Wheel Drive)
Final Drive:
O-ring sealed chain drive
Transmission Oil Type:
Yamalube Gear Oil 10W-40 or SAE 80 hypoid gear oil
Transmission Oil Capacity:
Approx. 0.80 L (0.85 US qt)
Safety Standards:
Designed to meet applicable ATV safety regulations for off-road use; rider training and protective gear are essential.
Braking System:
Dual hydraulic disc brakes (front), Single hydraulic disc brake (rear), high-performance calipers.
Parking Brake:
Mechanical parking brake system.
Frame Construction:
High-tensile steel, optimized for strength and weight distribution.
Display Type:
Digital LCD multi-function display (speedometer, odometer, tripmeter, clock, etc.)
Efi System:
Advanced EFI system for optimized fuel delivery, throttle response, and altitude compensation.
Diagnostic Ports:
Diagnostic connectors for EFI system analysis using specific Yamaha diagnostic tools.
Oil Change Interval:
Every 100 hours or 6 months, whichever comes first (under normal use). Shorter intervals recommended for severe use.
Air Filter Cleaning:
Inspect and clean every 20 hours or monthly. Replace as needed.
Spark Plug Replacement:
Recommended every 200 hours or 12 months.
Valve Clearance Check:
Check every 200 hours or 12 months.
Engine Oil Capacity:
2.20 L (2.32 US qt) with filter change, 2.00 L (2.11 US qt) without filter change
Coolant Capacity:
1.90 L (2.01 US qt)
Common Wear Items:
Front and rear brake pads, wheel bearings, chain and sprockets, tires, steering stem bearings.
Potential Problems:
While generally robust, early models might benefit from checking for specific EFI sensor calibration or exhaust system integrity if used heavily in wet or dusty conditions.