🏷️ Basic Information Identification Make: Yamaha Model: YFM Wolverine 350 Year: 2004 Vehicle Type: ATV (All-Terrain Vehicle) Product Name: Yamaha YFM Wolverine 350 2004 Factory Service Repair Manual PDF Download 👋 Introduction Market Position Market Segment: Mid-size utility ATV, popular for recreational and light-duty farm use. Competitive Analysis Competitors: Honda TRX300EX/350, Suzuki LT-F300 King Quad, Kawasaki Bayou 300 Key Features Key Features: Reliable 348cc air-cooled engine, selectable 2WD/4WD (on some variants), comfortable suspension, versatile for various terrains. Utility Focus: Designed for a balance of recreational riding and utility tasks, featuring a comfortable riding position and reliable power delivery. Value Proposition Manual Benefit: Enables owners to perform maintenance and repairs themselves, saving on labor costs and extending the vehicle's lifespan. 📋 Manual Details Coverage Areas Manual Type: Factory Service Repair Manual Language: English Format: PDF (Portable Document Format) Printability: Yes Compatibility: WINDOWS and MAC Requirements: Adobe PDF Reader Delivery Method: Instant PDF download after purchase. Page Count Estimated Page Count: The product description does not specify an exact page count. Factory service manuals for this era and complexity typically range from 200 to 500+ pages. 📖 Manual Coverage Systems Covered Systems Covered: General Information, Specifications, Periodic Inspection and Adjustment, Chassis, Engine Overhaul, Carburetion, Electrical, Troubleshooting Chassis Systems: Frame, suspension (front and rear), steering, wheels, tires, brakes, drivetrain (shaft drive, differentials). Engine Systems: Top end (cylinder head, valves), bottom end (crankshaft, connecting rod), lubrication system, cooling system, starting system, fuel system (carburetor). Electrical Systems: Ignition system (CDI), charging system (stator, regulator/rectifier), lighting system, battery, wiring diagrams, troubleshooting electrical faults. Procedures Included Procedures Included: Maintenance schedules, repair procedures, diagnostic troubleshooting, component overhaul, adjustments, system analysis Engine Rebuild Procedures: Detailed instructions for complete engine disassembly, inspection, overhaul, and reassembly, including valve adjustments and piston/cylinder replacement. Carburetor Overhaul Procedures: Comprehensive steps for carburetor disassembly, cleaning, inspection, reassembly, and adjustment of mixture and idle speed. Troubleshooting Guides: Systematic diagnostic procedures for common problems, including starting issues, poor performance, electrical faults, and drivetrain problems. Technical Depth Technical Depth: Comprehensive factory-level repair and maintenance information for all major systems. Diagnostic Tools: While not specific to electronic diagnostic tools, the manual details troubleshooting based on symptoms and component testing via multimeters and visual inspection. 📊 Manual Specifications File Specifications File Format: PDF Print Quality: High-resolution, suitable for printing. Binding Type: Digital Download (PDF) Paper Type: Not Applicable (Digital) Searchability: Typically, PDF service manuals have searchable text, allowing for quick access to specific topics. ⚙️ Engine Specifications Primary Engine Engine Type: 4-stroke, SOHC, air-cooled Displacement: 348cc Bore X Stroke: 83 mm x 64.5 mm Compression Ratio: 9.2:1 Performance Horsepower: Approximately 22 HP (manufacturer specific data may vary slightly) Torque: Approximately 20 lb-ft (manufacturer specific data may vary slightly) Engine Cooling: Fins on cylinder and cylinder head facilitate air flow for cooling. Fuel System Fuel Delivery: Carburetor (likely Mikuni BSR33) Carburetor Model: Mikuni BSR33 (common for this model) Fuel Type: Unleaded gasoline (minimum octane rating as specified in the manual, typically 87). Ignition Ignition System: CDI (Capacitor Discharge Ignition) Cooling Cooling Method: Air-cooled 🔧 Transmission Standard Transmission Type: Automatic (Continuously Variable Transmission - CVT) Drive System: Shaft drive Gear Selection: Forward, Neutral, Reverse Features Transfer Case: Sealed, gear type 📐 Dimensions Exterior Length: Approx. 74.8 inches Width: Approx. 42.9 inches Height: Approx. 42.5 inches Wheelbase: Approx. 49.2 inches Weights Dry Weight: Approx. 512 lbs Ground Clearance: Approx. 7.1 inches Capacity Fuel Capacity: Approx. 3.2 gallons (including reserve) 🛡️ Safety Features Ratings Safety Standards: Adheres to applicable ATV safety regulations for its class and year. Active Features Braking System: Hydraulic disc brakes, front and rear. Passive Features Lighting: Dual 30W headlights, 5W brake light. Tires: AT-specific knobby tires for traction. 💡 Technology Features Infotainment Infotainment System: Not applicable for this model; basic instrumentation (speedometer, odometer, fuel gauge, warning lights). Driver Assistance Driver Assistance Features: None (as expected for a 2004 utility ATV). Connectivity Connectivity Features: Not applicable. 🔧 Maintenance Service Intervals Oil Change Interval: Refer to manual for specific mileage/hours; typically every 1000 miles or annually. Air Filter Cleaning: Check and clean every 500 miles or more frequently in dusty conditions. Spark Plug Replacement: Refer to manual, typically around 2000-3000 miles. Brake Fluid Flush: Recommended every 2 years or as needed, consult manual. Fluid Specifications Engine Oil Type: Yamaha recommends Yamalube 4 (10W-40) or equivalent SAE 10W-40 API SG or higher. Engine Oil Capacity: Refer to manual; typically around 1.7-1.9 US qt (1.6-1.8 L) with filter change. Gear Oil Type: Refer to manual for specific grade, often SAE 80W-90 hypoid gear oil. Brake Fluid Type: DOT 3 or DOT 4 brake fluid. Coolant Type: Not applicable; this model is air-cooled. Known Issues Common Wear Items: CVT belt wear, carburetor jetting issues (clogging), suspension bushings, brake component wear. Carburetor Cleaning: Regular cleaning and adjustment of the Mikuni BSR33 carburetor is often necessary due...