This manual covers the Bruin YFM350 and Grizzly YFM35 2WD All-Terrain Vehicles. The Bruin, produced from 2003-2006, and the Grizzly, from 2007-2011, represent a commitment to reliable and capable off-road vehicles. These ATVs, powered by a 348cc air-cooled, 4-stroke engine, are designed for a variety of terrains and uses, reflecting a long-standing reputation for engineering quality and durability in the ATV market. This comprehensive service manual provides detailed information for the maintenance, repair, and troubleshooting of your ATV. It covers all aspects of the vehicle, including the engine, fuel system, cooling system, transmission, brakes, suspension, steering, frame, and electrical systems. With clear instructions, diagrams, and illustrations, this manual is an essential resource for DIY mechanics and owners looking to maintain their vehicles effectively and ensure optimal performance and longevity. 🏷️ Basic Information Identification Make: Yamaha Model: Bruin YFM350 / Grizzly YFM35 Model Variant: 2WD ATVs Codes Manual Part Number: LIT-11616-BN-20 Generation Model Generation Bruin: YFM350 Bruin series production spanned several years before being integrated or succeeded by other lines. Model Generation Grizzly: Grizzly line evolved significantly, with the YFM35 designation covering the earlier 350cc models of this generation. 👋 Introduction Market Position Target Audience: DIY mechanics, ATV owners seeking to perform maintenance and repairs, saving on dealer labor costs. Competitive Analysis Value Proposition: Provides extensive repair information at a fraction of dealer service costs. Enables owners to maintain their ATVs effectively. Key Features Benefits: Cost savings on labor, empowerment for self-maintenance, comprehensive repair guidance, instant access to technical data. 📋 Manual Details Coverage Applicable Years: 2003, 2004, 2005, 2006 (Bruin YFM350); 2007, 2008, 2009, 2010, 2011 (Grizzly YFM35) Coverage Areas: All repair topics including general information, periodic maintenance, fuel system, cooling system, engine top end, engine lubrication system, engine removal/installation, crankshaft/crankcase, transmission, wheels/tires, final drive, brakes, suspension, steering, frame, electrical system, diagnostics. Page Count Total Pages: 483 Bruin Specific Pages Start: 367 Type Manual Type: Complete Service Manual / Repair Manual Language Language: English Format File Format: PDF Supplementary Info Supplement Note: The 350 Bruin models are presented as a supplement to a base manual for the 450 model, indicating shared chassis and some systems but specific engine/drivetrain details for the 350. 📖 Manual Coverage Systems Systems Covered: Engine (Top End, Lubrication, Removal/Installation, Crankshaft/Crankcase), Fuel System, Cooling System, Transmission, Final Drive, Brakes, Suspension, Steering, Frame, Electrical System. Procedures Procedures Included: Periodic Maintenance, Troubleshooting, Diagnostics, Repair, Overhaul, Component Replacement, System Adjustments. Depth Technical Depth: Comprehensive, from basic maintenance to detailed engine and transmission rebuilds, including diagnostic procedures and component-level repair instructions. Visuals Visual Aids: Detailed diagrams, illustrations, photographs, and exploded views. Diagnostics Diagnostic Procedures: Detailed troubleshooting charts and diagnostic procedures for common problems within each system. Special Tools Special Tool Requirements: Manual may list specific Yamaha special tools required for certain repair procedures. 📊 Manual Specifications File Quality Print Quality: High-resolution, suitable for printing all pages. Searchability: Likely text-searchable PDF (standard for modern manuals). Binding Type Binding Type: N/A (Digital PDF Download) Paper Type Paper Type: N/A (Digital PDF Download) Compatibility Operating Systems: Compatible with all versions of Windows & Mac. Requirements Software Requirements: Adobe PDF Reader. Delivery Download Speed: Instant Download (No Waiting). Content Enhancements Illustrations Quality: High-quality, clear illustrations and diagrams that aid in understanding complex procedures. ⚙️ Engine Specifications Primary Engine Engine Type Bruin: Air-cooled, 4-stroke, SOHC, 2-valve Engine Displacement Bruin: 348cc Engine Type Grizzly: Air-cooled, 4-stroke, SOHC, 2-valve Engine Displacement Grizzly: 348cc (YFM35 designation likely refers to the 350cc class, not an exact 35cc displacement) Performance Cooling System: Air-cooled Compression Ratio: Refer to manual for specific compression ratio figures for these engine variants. Fuel System Fuel Delivery: Carburetor (specific model/size detailed in manual) Lubrication Lubrication System: Wet Sump (details on oil type and capacity in manual) Engine Identification Bore Stroke: Specific bore and stroke measurements for the 348cc engine are detailed in the manual. 🔧 Transmission Standard Transmission Type: Automatic (likely Ultramatic or similar Yamaha CVT system for these models) Features Transmission Features: Continuously Variable Transmission (CVT) with engine braking. Details on belt inspection/replacement, fluid type and changes are critical. Gear Ratios Gear Ratios: Manual provides detailed gear ratios for the transmission and final drive, crucial for performance and maintenance. 📐 Dimensions Exterior Body Style: All-Terrain Vehicle (ATV) Weights Dry Weight Approx Bruin: Refer to manual for exact figures (typically around 500-550 lbs) Dry Weight Approx Grizzly: Refer to manual for exact figures (typically around 570-610 lbs) Wheels Tires Wheel Size: Refer to manual for specific front and rear wheel sizes (typically 12-inch). Tire Size: Refer to manual for specific front and rear tire size recommendations and specifications. 🛡️ Safety Features Ratings Safety Standards: Adherence to relevant ATV safety standards (details and precautions in manual). Active Features Braking System: Hydraulic disc brakes (front and rear). Manual covers brake system maintenance, bleeding, pad replacement. Passive Features Throttle Limiter:...