Vehicle Segment:
Performance Sport ATV
Target Audience:
Enthusiasts, off-road riders, recreational users seeking performance and reliability
Key Competitors:
Suzuki LT250R, Honda TRX250R, Kawasaki Tecate-4
Engine Characteristic:
Torquey and reliable air-cooled engine known for its low-end grunt
Handling:
Agile and predictable handling, popular for trail riding and general sport use
Durability:
Renowned for its robust construction and long-term reliability
Manual Value:
Essential resource for owners to maintain, diagnose, and repair their Warrior 350 efficiently
Engine:
Complete engine disassembly, inspection, overhaul, and reassembly
Fuel System:
Carburetor service and tuning, fuel tank, fuel lines, fuel pump
Ignition System:
CDI unit, ignition coil, spark plug specifications, timing
Transmission Drivetrain:
Clutch operation, gear shifting mechanisms, final drive, axle maintenance
Cooling System:
Radiator, fan, coolant specifications, flow diagnostics (if applicable)
Electrical System:
Wiring diagrams, battery, starter, lighting, charging system
Suspension Steering:
Front and rear suspension, steering components, alignment specifications
Braking System:
Hydraulic brake system, caliper service, rotor inspection, brake fluid specifications
Wheels Tires:
Tire pressure, wheel bearing service, tire replacement guidelines
Frame Chassis:
Frame inspection, component mounting, skid plate installation
Bodywork Plastics:
Panel removal and installation, decal placement
Maintenance:
Scheduled maintenance intervals, oil changes, filter replacements, lubrication points
Troubleshooting:
Diagnostic flowcharts for common problems, symptom-based repair guidance
Repair:
Detailed step-by-step instructions for component disassembly, repair, and reassembly
Rebuilds:
Full engine and transmission rebuild procedures
Diagnostics:
Diagnostic tests for electrical components and engine performance
Depth Level:
Factory Level / Professional Technician
Detail Level:
Comprehensive, including torque specifications, clearances, and tolerances
Special Tools:
Identification and usage of specialized tools required for certain procedures
Engine Type:
4-stroke, SOHC, air-cooled
Bore X Stroke:
83.0 mm x 64.5 mm
Valve Configuration:
SOHC, 2 valves per cylinder
Horsepower:
Approximately 21-23 HP (estimated, varies with tuning)
Torque:
Approximately 20-22 lb-ft (estimated, varies with tuning)
Carburetor Type:
Mikuni VM34SS (single carburetor)
Fuel Type:
Unleaded gasoline, 87 octane minimum
Oil Type:
Yamalube 4 (or equivalent SAE 10W-40 motorcycle oil)
Oil Capacity:
1.75 L (1.85 US qt) without filter change, 1.90 L (2.01 US qt) with filter change
Transmission Type:
Constant mesh, 6-speed manual with reverse
Transmission Options:
N/A (standard 6-speed manual)
Clutch Type:
Wet, multi-plate
Final Drive:
O-ring sealed chain drive
Transmission Oil Type:
Yamalube 4 (or equivalent SAE 10W-40 motorcycle oil)
Transmission Oil Capacity:
0.90 L (0.95 US qt)
Atv Safety Standards:
Designed to meet ANSI standards for recreational ATVs
Throttle Limiter:
Adjustable throttle stop screw for controlling speed (user adjustable)
Frame Construction:
High-tensile steel frame for rigidity and durability
Parking Brake:
Integrated parking brake system
Engine Oil Change:
Every 100 hours or 6 months, whichever comes first
Air Filter Cleaning:
Every 20 hours or before riding in dusty conditions
Spark Plug Inspection:
Every 100 hours or 12 months
Chain Lubrication Adjustment:
Every 500 km (300 miles) or weekly during heavy use
Engine Oil Spec:
SAE 10W-40 API SG or higher (Yamalube 4)
Brake Fluid Spec:
DOT 3 or DOT 4 hydraulic brake fluid
Carburetor Fouling:
Can occur due to infrequent use or poor fuel quality, leading to starting or running issues.
Camshaft Wear:
In some high-mileage units, wear on the camshaft lobes can occur, affecting valve timing and performance.
Rear Axle Bearings:
Can require periodic inspection and replacement, especially under heavy use or after submersion.
Recommended Maintenance Items
Air Filter Part Number:
3X4-14451-00-00 (example, confirm with manual)
Oil Filter Part Number:
5JX-13440-00-00 (example, confirm with manual)
Yamaha Atv Legacy:
Yamaha has a long-standing reputation for producing reliable and high-performance ATVs.
Warrior Lineage:
The Warrior 350 is an evolution of Yamaha's popular sport ATV line, offering a blend of performance and usability.
Production Period:
Originally introduced in the mid-1980s, with continuous updates through the early 2000s.
Manufacturing Location:
Japan
