🏷️ Basic Information Identification Make: Yamaha Model: Bruin YFM350 / Grizzly YFM350 Model Variant: 4WD Model Years Covered: 2003, 2004, 2005, 2006 (Bruin YFM350); 2007, 2008, 2009, 2010, 2011 (Grizzly YFM350) Engine Type: 4-stroke, SOHC, 2-valve, Air-cooled with Fan Assist Codes Manual Part Number: LIT-11616-BN-35 Yamaha Tech Pubs Reference: Recommended for 2003, 2004-2007 for listed models 👋 Introduction Market Position Target Audience: Do-it-yourself mechanics, ATV enthusiasts, owners seeking to save on dealer labor costs. Competitive Analysis Value Proposition: Offers significant cost savings compared to dealer service rates (estimated $70+ per hour labor). Key Features Accessibility: Instant PDF download provides immediate access to repair information. Practicality: Empowers owners to perform routine maintenance and repairs themselves, fostering self-sufficiency. 📋 Manual Details Coverage Areas Primary Coverage: 2003-2006 Yamaha Bruin YFM350 4WD; 2007-2011 Yamaha Grizzly YFM350 4WD Supplementary Coverage: Bruin 350 models supplement begins on page 367, indicating potential base manual reference for 450 models, as per Yamaha tech pubs. Page Count Total Pages: 481 Manual Type Type: Complete Service Manual Language Language: English Format File Format: PDF Digital Delivery: Instant Download Printability: All pages printable 📖 Manual Coverage Systems Covered Engine Management: Fuel System, Cooling System, Engine Top End, Engine Lubrication System, Crankshaft/Crankcase Drivetrain: Transmission, Final Drive Chassis And Suspension: Wheels/Tires, Suspension, Steering, Frame Electrical: Electrical System Procedures Included Maintenance: Periodic Maintenance Diagnostics: Diagnostics Repair: Engine Removal/Installation, Crankshaft/Crankcase, Transmission, Wheels/Tires, Final Drive, Brakes, Suspension, Steering, Frame, Electrical System repairs Technical Depth Depth Level: Comprehensive, covering all repair topics from basic maintenance to detailed diagnostics and rebuild procedures. Visual Aids: Detailed Diagrams, Illustrations, Photos, Exploded Views Instruction Style: Step-by-step Instructions 📊 Manual Specifications File Format Required Software: Adobe PDF Reader Compatibility: All Versions of Windows & Mac Print Quality Quality: High-resolution, suitable for printing all pages. Binding Type Binding Type: Not Applicable (Digital Download) Paper Type Paper Type: Not Applicable (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Displacement: 348cc (for both Bruin YFM350 and Grizzly YFM350) Engine Configuration: Single Cylinder Valvetrain: SOHC, 2-valve Cooling System: Air-cooled with Fan Assist Performance Horsepower Estimate: Approximately 17-20 HP (typical for this displacement and configuration, exact figures would be in manual) Torque Estimate: Approximately 20-23 lb-ft (typical for this displacement and configuration, exact figures would be in manual) Fuel System Fuel Delivery: Carburetor (likely Mikuni BSR series, e.g., BSR33, specific details in manual) Fuel Type: Unleaded Gasoline 🔧 Transmission Standard Transmission Type: Automatic (Yamaha Ultramatic® Transmission) Drive System: Shaft Drive, 4WD with On-Command® Features Gear Selection: High/Low range, Neutral, Reverse 📐 Dimensions Exterior Overall Length: Refer to manual for exact specifications, typically around 75-80 inches. Overall Width: Refer to manual for exact specifications, typically around 43-45 inches. Overall Height: Refer to manual for exact specifications, typically around 43-45 inches. Weights Dry Weight: Refer to manual for exact specifications, typically around 550-570 lbs. Fuel Capacity: Refer to manual for exact specifications, typically around 3.7 gallons. 🛡️ Safety Features Ratings Atv Safety: ATVs are inherently designed for off-road use; safety relies heavily on operator skill, adherence to warnings in the manual, and appropriate safety gear. Active Features Braking System: Hydraulic disc brakes (front and rear), detailed in manual. Passive Features Stability: Wide wheelbase and low center of gravity for enhanced stability. 💡 Technology Features Infotainment Features: Basic instrumentation: speedometer, odometer, hour meter, fuel gauge, neutral/reverse/4WD indicators. No advanced infotainment systems typical of modern vehicles. Driver Assistance Features: Yamaha's Ultramatic® transmission provides engine braking on descents. On-Command® 4WD system allows on-the-fly engagement. Connectivity Features: N/A (No inherent connectivity features). 🔧 Maintenance Service Intervals Oil Change Interval: Typically every 100 hours or annually, consult manual for specific recommendation. Air Filter Cleaning: Frequent inspection and cleaning recommended, especially in dusty conditions; replacement intervals specified in manual. Spark Plug Replacement: Refer to manual for interval and correct plug type (e.g., NGK CR7E). Fluid Specifications Engine Oil Type: Yamalube (or equivalent) SAE 10W-40 API SG or higher, JASO MA certified. Specific capacity detailed in manual. Gear Oil Type: Yamalube SAE 80 Hypoid Gear Oil (or equivalent), specific capacities for front and rear differentials in manual. Brake Fluid Type: DOT 4 Hydraulic Brake Fluid (refer to manual for specific type and bleeding procedures). Known Issues Common Wear Items: Brake pads, drive belts (if applicable to specific sub-models), suspension bushings, wheel bearings (typical for ATVs of this age and use). Potential Maintenance Tasks: Carburetor cleaning/adjustment, differential oil changes, coolant flush (if liquid-cooled variant exists or for fan cooling system), general lubrication of pivot points. 📚 Vehicle History Brand Heritage Manufacturer: Yamaha Motor Corporation, a global leader in powersports, known for innovation and reliability. Model Evolution Bruin Grizzly Lineage: The Bruin YFM350 was a popular mid-size utility ATV. The Grizzly line generally represents Yamaha's higher-performance and feature-rich utility ATVs. The YFM350 designation indicates an evolution or continuation of similar platform features across these model names for the...