Vehicle Segment:
Mid-size utility ATV, popular for recreational trail riding and light work tasks.
Competitors:
Polaris Sportsman, Honda FourTrax, Suzuki King Quad, Kawasaki Bayou.
Vehicle Strengths:
Reliability, torquey engine, comfortable ride, capable off-road performance.
Benefits For Owner:
Empowers owners to perform routine maintenance, diagnose issues, and complete repairs, saving time and money on dealership visits.
Benefits For Mechanic:
Provides essential technical data, specifications, and procedures for efficient and accurate workshop repairs.
Powertrain:
Engine (Top End, Bottom End, Cooling, Lubrication), Transmission (Clutch, Gearbox, Driveshafts)
Chassis:
Suspension (Front and Rear), Steering System, Braking System (Front and Rear), Wheels and Tires
Electrical:
Ignition System, Lighting System, Charging System, Starting System, Wiring Diagrams, Switches, Sensors
Body And Frame:
Frame, Body Panels, Seat, Handlebars, Fenders, Racks
Routine Maintenance:
Oil Changes, Filter Replacements, Spark Plug Service, Air Filter Cleaning/Replacement, Chain Adjustment/Lubrication, General Inspection
Repair And Rebuild:
Engine Rebuild (Piston, Rings, Valves, Crankshaft), Transmission Overhaul, Carburetor Cleaning and Adjustment, Brake Caliper Service, Suspension Component Replacement, Electrical Component Diagnosis and Replacement
Troubleshooting:
Diagnostic Flowcharts, Common Problem Identification and Solutions, Symptom-Based Troubleshooting
Level Of Detail:
Comprehensive workshop-level repair procedures with step-by-step instructions and detailed diagrams.
Diagnostic Capability:
Advanced diagnostic procedures, including testing of electrical circuits, fuel system components, and engine performance parameters.
Engine Type:
4-stroke, SOHC, Air-Cooled (for 350 model); 4-stroke, SOHC, Liquid-Cooled (for 400 model, typically)
Displacement:
Approximately 348cc (350 model), Approximately 386cc (400 model, depending on exact variant)
Bore X Stroke:
Refer to specific model year in manual for exact dimensions.
Compression Ratio:
Refer to specific model year in manual for exact ratio.
Horsepower Estimate:
Typically in the 20-25 HP range, depending on specific model and tuning.
Torque Estimate:
Torquey delivery suitable for trail riding and moderate hauling.
Fuel Delivery:
Carburetor (e.g., Mikuni VM Series or similar)
Fuel Type:
Unleaded Gasoline (Octane rating specified in manual)
Ignition System:
CDI (Capacitor Discharge Ignition)
Cooling Method:
Air-cooled (350) or Liquid-cooled (400)
Transmission Type:
Automatic (CVT - Continuously Variable Transmission) with Reverse, Neutral, and Forward gears.
Drive System:
Shaft Drive, 2WD or 4WD depending on sub-model.
Clutch Type:
Automatic Centrifugal Clutch
Transmission Fluid Type:
Yamalube (or equivalent API GL-4 SAE 80W-90 hypoid gear oil for final drive, check manual for specific CVT fluid spec).
Length:
Refer to specific model year in manual for exact dimensions (typically around 75-80 inches).
Width:
Refer to specific model year in manual for exact dimensions (typically around 42-46 inches).
Height:
Refer to specific model year in manual for exact dimensions (typically around 44-47 inches).
Dry Weight:
Refer to specific model year in manual for exact weight (typically in the 500-600 lbs range).
Ground Clearance:
Refer to specific model year in manual for exact ground clearance (typically 8-11 inches).
Fuel Tank Capacity:
Typically around 3.2-3.7 gallons.
Oil Capacity:
Refer to specific model year in manual for exact oil capacity (engine oil).
Vehicle Safety Design:
Designed for off-road use, user assumes responsibility for safe operation and adherence to local regulations.
Braking System:
Hydraulic disc brakes front and rear.
Lighting:
Dual halogen headlights, taillight, and brake light.
Operator Controls:
Thumb throttle, handlebar controls for braking and gear selection.
Display Features:
Basic digital instrument cluster displaying speed, odometer, trip meter, 4WD indicator, gear indicator (if equipped).
Atv Specific Features:
Engine braking provided by the CVT transmission.
Connectivity Options:
N/A for this model era, focused on core off-road functionality.
Engine Oil Change:
Typically every 100 hours or 6 months, refer to manual for precise intervals based on usage.
Air Filter Service:
Inspect and clean/replace every 20-40 hours or as needed based on dusty conditions.
Spark Plug Replacement:
Typically every 100-200 hours or annually, consult manual for specific plug type and gap.
Valve Clearance Check:
Periodic check and adjustment recommended, typically every 500-1000 hours or as per manual schedule.
Engine Oil Type:
Yamalube 4M or equivalent 10W-40 API SG, SJ, or SL.
Coolant Type:
For liquid-cooled models: Permanent Antifreeze/Coolant (Ethylene Glycol based) with a 50/50 mix of water. Check manual for Yamaha specific coolant recommendation.
Common Wear Items:
Brake pads, tires, drive belts (CVT), suspension bushings, wheel bearings.
Potential Problems:
Carburetor clogging due to ethanol in fuel, starter motor issues, overheating on liquid-cooled models if coolant system is not maintained.
Yamaha Atv Legacy:
Yamaha has a long-standing reputation for building reliable and capable ATVs, dating back to the early days of the industry.
Wolverine Lineage:
The Wolverine line has been a staple in Yamaha's ATV lineup, evolving with engine updates and chassis improvements throughout its production. This 2003-2009 generation represents a significant iteration of the mid-size utility ATV concept.
Manufacturing Origin:
Likely manufactured in Japan or the United States, consistent with Yamaha's global manufacturing strategy.
