The YFM Wolverine 350, an All-Terrain Vehicle (ATV) produced in 2004, represents a mid-size utility model renowned for its durability and versatility. Designed for recreational riders, farmers, ranchers, and trail enthusiasts, this ATV combines rugged build quality with user-friendly operation. Its 348 cc four-stroke engine, featuring a Mikuni BS32 carburetor and CDI ignition, provides reliable power for various terrains. The 5-speed manual transmission with an automatic clutch and shaft drive ensures efficient power delivery, while its robust suspension and dual front hydraulic disc brakes offer capable performance and safety. The Wolverine 350 is a testament to a legacy of engineering dependable powersports vehicles. This comprehensive factory service manual is designed to assist owners and technicians in maintaining and repairing the 2004 YFM Wolverine 350. It covers all essential systems, including the engine, transmission, chassis, braking, and electrical systems, with detailed procedures for disassembly, assembly, and troubleshooting. The manual provides factory-level detail, including torque specifications, tolerances, and special tool requirements for tasks ranging from routine maintenance like oil changes and filter replacements to complex engine rebuilding and electrical diagnostics. Its systematic approach to problem-solving and clear guidance ensures that the ATV can be kept in optimal working condition for years to come. 🏷️ Basic Information Identification Make: Yamaha Model: YFM Wolverine 350 Year: 2004 Vehicle Type: All-Terrain Vehicle (ATV) 👋 Introduction Market Position Category: Mid-size utility ATV Target Audience: Recreational riders, farmers, ranchers, trail enthusiasts Competitive Analysis Key Competitors: Honda TRX350 Rancher, Suzuki LT-F300 King Quad, Polaris Sportsman 335 Key Features Durability: Known for its rugged build and reliability in demanding conditions Versatility: Suitable for various terrains and applications due to its 4x2 drivetrain and capable suspension Ease Of Use: User-friendly operation and maintenance, making it accessible for a wide range of riders 📋 Manual Details Coverage Areas Engine: Complete engine overhaul, tuning, and troubleshooting Transmission: Clutch, gearbox, drive shaft, and differential maintenance and repair Suspension: Front and rear suspension systems, shock absorbers, and bushings Brakes: Front and rear brake systems, including hydraulic lines, calipers, and master cylinders Electrical: Ignition system, charging system, lighting, starter motor, and wiring diagrams Fuel System: Carburetor disassembly, cleaning, and adjustment; fuel pump and lines Cooling System: Radiator, fan, thermostat, and coolant flow Frame And Body: Chassis inspection, body panel removal and installation, and seat assembly Wheels And Tires: Tire pressure, wear patterns, and wheel removal/installation Troubleshooting: Diagnostic procedures for common issues and fault finding Page Count Estimated Pages: Approximately 300-400 pages (typical for comprehensive factory manuals) Manual Type Type: Factory Service Manual / Repair Manual Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine Systems: Internal combustion engine, lubrication, cooling, fuel delivery, ignition, exhaust Drivetrain Systems: Clutch operation, manual transmission, final drive (differential), drive shafts Chassis Systems: Frame structure, steering mechanism, suspension (front and rear), wheel hubs Braking Systems: Hydraulic brake circuits, brake pads, rotors, master cylinders, slave cylinders Electrical Systems: 12V electrical system, battery, charging (stator, regulator/rectifier), starting system, lighting, instrumentation, CDI ignition Fuel And Emission Systems: Carburetor specifications (Mikuni BS32), fuel tank, fuel lines, air filter assembly Procedures Included Preventive Maintenance: Scheduled maintenance intervals, lubrication points, filter replacement, fluid changes Disassembly And Assembly: Step-by-step instructions for component removal and installation of major assemblies Troubleshooting Guide: Systematic approach to diagnosing and resolving common mechanical and electrical issues Engine Rebuilding: Detailed procedures for cylinder head removal, piston replacement, valve adjustment, crankshaft inspection, and sealing Transmission Service: Clutch adjustment, gear inspection, and lubrication procedures Electrical Diagnostics: Wiring diagrams, component testing procedures, and troubleshooting electrical faults Technical Depth Depth: Comprehensive (covering all aspects from routine maintenance to complete engine rebuilds and chassis repairs) Detail Level: Factory-level detail with torque specifications, tolerances, and special tool requirements 📊 Manual Specifications File Format Format Type: Portable Document Format (PDF) Searchability: Text-searchable for quick information retrieval Print Quality Clarity: High-resolution scans of original factory documentation, ensuring clear diagrams and text Binding Type Binding: Not Applicable (Digital PDF format) Paper Type Paper: Not Applicable (Digital PDF format) ⚙️ Engine Specifications Primary Engine Engine Type: Four-stroke, SOHC, air-cooled, single-cylinder Displacement: 348 cc Bore X Stroke: 83.0 mm x 64.5 mm Compression Ratio: 8.7:1 Valve Clearance Intake Cold: 0.08 - 0.12 mm (0.003 - 0.005 in) Valve Clearance Exhaust Cold: 0.12 - 0.17 mm (0.005 - 0.007 in) Performance Horsepower Estimated: Approximately 20-22 hp (actual figures vary and are not always published by manufacturers for ATVs) Torque Estimated: Not readily published, but optimized for low-end torque for trail riding Fuel System Carburetor Model: Mikuni BS32 Fuel Type: Unleaded gasoline Fuel Tank Capacity: 11.0 Liters (2.9 US gal) Ignition System Ignition Type: CDI (Capacitor Discharge Ignition) 🔧 Transmission Standard Transmission Type: 5-speed manual with automatic clutch (Wet, multi-plate) Drive System: 2WD (Shaft drive to rear wheels) Clutch Operation: Centrifugal automatic clutch Features Reverse Gear: Yes Final Drive: Sealed O-ring chain, however,...