This manual covers ATVs, model years 2004 through 2007, including the YFM350A, YFM350FA, and YFM400FA variants. These utility ATVs are powered by reliable 4-stroke, SOHC engines, available in 348cc and 386cc displacements, and feature automatic transmission with shaft drive. Known for their robust construction and off-road capability, the Bruin and Grizzly series are designed for both work and recreational use, offering features like selectable 2WD or 4WD and hydraulic disc brakes. The heritage in powersports ensures a focus on durability and performance for these versatile machines. This comprehensive service repair workshop manual provides detailed information essential for the maintenance and repair of your ATV. It covers a wide range of systems, including engine mechanicals, fuel injection, cooling, electrical systems, and chassis components such as suspension and brakes. You will find step-by-step instructions for scheduled maintenance, troubleshooting common issues, and performing complex repairs or rebuilds. The manual includes clear illustrations, wiring diagrams, and technical specifications, making it an invaluable resource for owners and technicians aiming to keep these ATVs in optimal condition. 🏷️ Basic Information Identification Make: Yamaha Model: Bruin / Grizzly Engine Type: ATV Product Name: Yamaha YFM 350 400 BRUIN GRIZZLY 2004-2007 ATV Service Repair Workshop Manual PDF Download Codes Model Codes: YFM350A, YFM350FA, YFM400FA 👋 Introduction Market Position Vehicle Segment: Utility ATVs (All-Terrain Vehicles) Competitive Analysis Key Competitors: Polaris Sportsman, Honda FourTrax, Suzuki King Quad, Kawasaki Brute Force (in their respective displacement classes). Key Features Manual Value Proposition: Comprehensive, technician-level repair and maintenance guidance for DIY owners, enabling cost savings and self-sufficiency. Target Audience User Profile: DIY enthusiasts, independent mechanics, and owners seeking to maintain, repair, or restore their Yamaha Bruin or Grizzly ATVs. 📋 Manual Details Coverage Areas Covered Years: 2004, 2005, 2006, 2007 Covered Models: YFM350 Bruin/Grizzly 2WD, YFM350F Bruin/Grizzly 4WD, YFM400F Bruin/Grizzly 4WD Page Count Estimated Pages: Varies based on specific model and options, typically 400-800 pages for comprehensive service manuals. Manual Type Type: Service Repair Workshop Manual Language Primary Language: English Format Delivery Format: PDF Download (potentially zipped) 📖 Manual Coverage Systems Covered Engine Mechanical: Complete engine disassembly, assembly, inspection, and repair for both 350cc and 400cc variants. Fuel System: Fuel injection system diagnosis, maintenance, and repair, including fuel pump, injectors, sensors, and throttle body. Cooling System: Radiator, fan, thermostat, water pump, and coolant flow troubleshooting and repair. Electrical System: Starting system, charging system, ignition system, lighting, battery, and fuses. Includes detailed wiring diagrams. Chassis: Suspension (front and rear), steering, brakes (hydraulic disc), wheels, and tires. Procedures Included Maintenance: Scheduled maintenance tasks, oil changes, filter replacements, lubrication, and general upkeep. Troubleshooting: Diagnostic procedures for common and uncommon problems, symptom-based troubleshooting guides. Repair Rebuild: Detailed step-by-step instructions for component repair and complete engine or drivetrain rebuilds. Adjustments: Carburetor (if applicable, though fuel injection is primary), throttle cable, brake levers, and other linkage adjustments. Technical Depth Depth: Comprehensive. Covers everything from basic periodic checks and adjustments to complete engine and transmission overhauls. Includes detailed diagnostics and troubleshooting for all major systems. 📊 Manual Specifications File Format File Type: PDF Searchability: Likely searchable text-based PDF, enabling quick information retrieval. Print Quality Printability: Printable on any computer and printer, as specified by the product description. Binding Type Physical Binding: N/A (Digital download only, no physical copy) Paper Type Physical Paper: N/A (Digital download only, no physical copy) Illustrations Illustration Quality: Illustrated with clear step-by-step instructions, zoomable illustrations, and detailed component explosions/exploded views. File Size Estimated Size: Can be up to 1800 MB, requiring significant storage space and a stable internet connection. ⚙️ Engine Specifications Primary Engine Engine Type: 4-stroke, SOHC (Single Overhead Cam) Displacement 350: 348cc Displacement 400: 386cc Performance Horsepower Estimated 350: Approximately 20-25 HP (exact figures vary by specific tuning and year) Torque Estimated 350: Approximately 22-26 lb-ft (exact figures vary by specific tuning and year) Horsepower Estimated 400: Approximately 25-30 HP (exact figures vary by specific tuning and year) Torque Estimated 400: Approximately 27-32 lb-ft (exact figures vary by specific tuning and year) Fuel System Fuel Delivery: Electronic Fuel Injection (EFI) Cooling System Cooling Method: Liquid-cooled 🔧 Transmission Standard Transmission Type: Automatic (Yamaha's Ultramatic® transmission with engine braking) Drive Type: 2WD or 4WD (selectable, with locking front differential on some models) Features Gear Selection: High/Low range, Neutral, Reverse Final Drive: Shaft drive 📐 Dimensions Exterior Wheelbase Estimated: Approximately 48.5 inches (1230 mm) for both 350 and 400 models. Weights Dry Weight Estimated 350: Approximately 570-600 lbs (259-272 kg) Dry Weight Estimated 400: Approximately 585-615 lbs (265-279 kg) Cargo Rack Capacity Front Estimated: Typically around 99 lbs (45 kg) Rack Capacity Rear Estimated: Typically around 187 lbs (85 kg) 🛡️ Safety Features Ratings Atv Safety Standards: Meets ANSI/SVIA 1-2001 and 2-2001 standards. (Common for Yamaha ATVs of this era). Active Features Braking System: Hydraulic disc brakes front and rear, with parking brake. Engine Braking: Utilizes the...