The Yamaha Warrior YZF350 is a renowned sport ATV, first introduced in 1987 and produced through various iterations until approximately 2004. This robust machine, powered by a 347cc liquid-cooled, 2-stroke engine, is celebrated for its sporty performance and enduring reliability, making it a favorite among enthusiasts. Its engineering prioritizes agility and responsiveness, characteristic of Yamaha's commitment to creating high-quality recreational vehicles. With a 5-speed manual transmission and chain drive, the Warrior YZF350 offers an engaging and capable riding experience for a variety of terrains and applications. This comprehensive service manual provides essential information for the maintenance, repair, and rebuild of the Yamaha Warrior YZF350 (model code YZF350). It covers critical areas including engine tune-ups and overhauls, transmission and drivetrain services, suspension and brake system maintenance, and electrical system troubleshooting, along with bodywork and accessory upkeep. Designed for owners and technicians alike, this manual offers step-by-step instructions and factory-level accuracy to ensure the vehicle remains in optimal condition. Its detailed content empowers users to perform routine maintenance and address more complex repairs, enhancing the longevity and performance of their ATV. 🏷️ Basic Information Identification Make: Yamaha Model: Warrior YZF350 Product Type: Service Manual Codes Model Code: YZF350 👋 Introduction Market Position Target Audience: Yamaha Warrior YZF350 ATV owners, mechanics, enthusiasts Competitive Analysis Value Proposition: Cost-effective DIY repair and maintenance, empowering users. Key Features Ease Of Use: Step-by-step instructions with illustrations. Comprehensiveness: Covers all major systems and procedures. Accessibility: Instant digital download. 📋 Manual Details Coverage Areas Primary Coverage: Maintenance, Repair, Rebuild Engine Coverage: Tune-ups, Overhauls, Valve Adjustments, Piston Replacement, Crankshaft Repair Electrical Coverage: Wiring Diagrams, Sensor Troubleshooting, Component Replacement Suspension And Brakes Coverage: Shock/Strut Adjustments, Steering Repairs, Brake System Maintenance Body And Accessories Coverage: Body Panel Replacement, Lighting Repair, Accessory Maintenance Page Count Estimated Page Count: Refer to manual; typically 300-500 pages for comprehensive ATV service manuals Manual Type Type: Service Manual Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Powertrain: Engine, Transmission, Drivetrain Chassis: Suspension, Steering, Brakes, Frame Electrical: Ignition, Lighting, Wiring Harness, Battery, Charging System Bodywork: Plastics, Body Panels, Seating, Controls Procedures Included Routine Maintenance: Oil Changes, Filter Replacements, Chain Adjustments, Air Filter Cleaning/Replacement Engine Repair: Top-end rebuilds, Bottom-end rebuilds, Carburetor Overhaul, Valve Lapping, Gasket Replacement Transmission Repair: Clutch adjustment, Gearbox inspection and repair Suspension And Steering Repair: Shock absorber service, Bushing replacement, Tie rod end replacement Brake System Repair: Brake pad replacement, Brake fluid flush and bleed, Caliper service Electrical Troubleshooting: Component testing, Diagnostic procedures, Wiring harness repair Technical Depth Depth: Comprehensive; covers basic maintenance to full engine and component rebuilds. Diagnostic Capabilities: Detailed troubleshooting guides for common and uncommon issues. Accuracy: Factory-level accuracy and detail. 📊 Manual Specifications File Format Format: PDF Compatibility: Windows, Mac, Linux Searchability: Searchable text content Print Quality Printability: Printable for hard copy reference Binding Type Digital Format Advantage: Instant access, no physical binding required Paper Type Digital Format Advantage: No physical paper type; digital accessibility ⚙️ Engine Specifications Primary Engine Type: 2-Stroke, Single-Cylinder Displacement: 347cc Bore X Stroke: 64.0 mm x 54.0 mm Cooling System: Liquid-Cooled Performance Horsepower: Approx. 24-26 HP (Varies by year and specific tuning) Torque: Refer to manual for specific torque figures Fuel System Carburetion: Mikuni VM26SS (Single Carburetor) Fuel Type: Unleaded Gasoline (Minimum 87 Octane Recommended) Fuel Mix Ratio: 50:1 (Gasoline to 2-stroke oil) for pre-mix, or use injection system if applicable to specific model year. Engine Management Ignition System: CDI (Capacitor Discharge Ignition) 🔧 Transmission Standard Type: 5-Speed Manual with Reverse Optional Gear Ratios: Refer to manual for specific gear ratios. Features Clutch Type: Wet, Multi-disc Drive System: Chain Drive 📐 Dimensions Exterior Overall Length: Approx. 70.7 inches (1795 mm) Overall Width: Approx. 43.3 inches (1100 mm) Overall Height: Approx. 42.3 inches (1075 mm) Weights Dry Weight: Approx. 397 lbs (180 kg) Fuel Capacity: Approx. 2.4 gallons (9.0 Liters) Wheels And Tires Front Tire Size: AT21x7-10 Rear Tire Size: AT20x10-9 Wheel Bolt Pattern: Refer to manual for specific specifications 🛡️ Safety Features Ratings Atv Safety: ATV safety guidelines and recommended practices are crucial for operation. Consult manual for specific safety warnings. Active Features Parking Brake: Mechanical drum brake Passive Features Hand Guards: Standard Kill Switch: Handlebar-mounted engine kill switch 💡 Technology Features Infotainment Features: Basic controls; no complex infotainment systems typical of modern vehicles. Driver Assistance Features: No electronic driver assistance systems. Connectivity Features: No integrated connectivity features. 🔧 Maintenance Service Intervals Engine Oil Change: Every 100 hours or annually (refer to manual for precise intervals based on usage). Air Filter Cleaning: Clean every 10 hours or as needed, depending on riding conditions. Spark Plug Replacement: Inspect every 100 hours, replace as needed. Chain Lubrication And Adjustment: Lubricate every 20 hours, adjust slack every 50 hours or as needed. Fluid Specifications Engine Oil Type: Yamalube 2-stroke oil or equivalent API service TC, JASO...