🏷️ Basic Information Identification Make: Yamaha Model: Bruin 350 Model Variant: 400 Body Style: ATV (All-Terrain Vehicle) Powertrain Layout: 4x4 (Four-Wheel Drive) Codes Engine Code: 350cc class, likely single-cylinder, SOHC, 4-stroke Chassis Code: Refer to VIN and specific model identification for detailed chassis codes 👋 Introduction Market Position Market Position: The Yamaha Bruin 350 400 (likely referring to the 350cc model with 4WD capabilities, often colloquially grouped with similar displacements) was positioned as a capable and reliable utility ATV, designed for recreational riding, light farm work, and trail exploration. It competed in a segment that prioritized durability and ease of use. Competitive Analysis Competitive Analysis: Competed against models from Honda (e.g., FourTrax), Suzuki (e.g., KingQuad), and Arctic Cat, offering a blend of power, comfort, and 4WD functionality. Its focus was on delivering value for riders needing a versatile off-road machine. Key Features Key Features: Automatic transmission, selectable 4WD, independent front suspension, robust engine, comfortable seating, and Yamaha's reputation for build quality. Manual Value Proposition Manual Value Proposition: This manual provides comprehensive, model-specific repair and maintenance information, empowering owners and technicians to perform a wide range of services accurately and efficiently, saving time and money compared to relying solely on professional service centers. 📋 Manual Details Coverage Areas Covered Model Years: 2004, 2005, 2006 Coverage Scope: All workshop repair procedures, electrical diagrams, service procedures, fluid capacities Page Count Estimated Page Count: Comprehensive (Specific count not provided, but content indicates full workshop coverage) Manual Type Manual Type: Workshop Service Repair Manual Language Language: English Format Format: PDF (Digital Download) 📖 Manual Coverage Systems Covered Engine Systems: Engine removal/installation, cylinder head, valve, cylinder, piston, crankcase, crankshaft, primary shaft, clutch, lubrication Drivetrain Systems: Transmission, sub-transmission, gearshift linkage Suspension And Steering: Front wheel/suspension, rear wheel/suspension Braking Systems: Hydraulic brake system Electrical Systems: Battery/charging system, ignition system, electric starter, switches, electrical diagrams Fuel And Ignition: Fuel system, ignition system Procedures Included Maintenance Procedures: Routine maintenance, lubrication, inspection, adjustment Repair Procedures: Engine rebuilding, component overhaul, suspension repair, brake system repair, electrical system repair Diagnostic Procedures: Troubleshooting guides, electrical diagnostics Technical Depth Technical Depth: Comprehensive: from basic maintenance and adjustments to complete engine and component rebuilds, including detailed electrical schematics. 📊 Manual Specifications File Format File Format: PDF File Compatibility: PC and MAC compatible File Features: Searchable text, zoom in/out functionality for clarity Print Quality Print Quality: High-resolution for clear diagrams and text. Printable pages. Binding Type Binding Type: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Type: Single-cylinder, 4-stroke, SOHC (Single Overhead Camshaft) Displacement: Approximately 348cc (for the 350 designation) Cooling System: Likely liquid-cooled, with radiator and fan Performance Bore X Stroke: Specific figures would be detailed in the manual, typical for this class of engine. Compression Ratio: Specific figures would be detailed in the manual. Fuel System Fuel Delivery: Likely Carbureted, possibly Mikuni Lubrication Oil Capacity: Specific capacity detailed in the manual, typically around 1.5-2.0 liters Oil Type Recommendation: Yamalube or equivalent API SG or higher, SAE 10W-40 or 20W-50 depending on temperature (specifics in manual) Ignition Ignition Type: CDI (Capacitor Discharge Ignition) 🔧 Transmission Standard Transmission Type: Automatic Transmission (AT) with Ultramatic® system Drive System: Shaft drive, 4WD with On-Command® (selectable 2WD/4WD) Features Gear Ratios: Detailed low and high range ratios provided in the manual. Clutch Type: Automatic centrifugal clutch Final Drive Type: Bevel gear and drive shaft 📐 Dimensions Exterior Length: Approx. 76.8 inches (1950 mm) Width: Approx. 42.7 inches (1085 mm) Height: Approx. 45.7 inches (1160 mm) Weights Dry Weight: Approx. 591 lbs (268 kg) Towing Capacity: Likely 1,100 lbs (500 kg) or more, detailed in manual. Payload Capacity: Front Rack: 88 lbs (40 kg), Rear Rack: 176 lbs (80 kg) Wheelbase Wheelbase: Approx. 49.2 inches (1250 mm) Ground Clearance Ground Clearance: Approx. 10.5 inches (267 mm) 🛡️ Safety Features Ratings Safety Ratings: ATVs are not typically subject to the same crash safety ratings as passenger vehicles. Safety is inherent in design and rider operation. Active Features Active Features: Powerful hydraulic disc brakes (front and rear), aggressive tire tread for traction, selectable 4WD for enhanced grip. Passive Features Passive Features: Ergonomic seating, robust chassis, durable bodywork. 💡 Technology Features Infotainment Infotainment System: N/A (Utility ATV, focus is on mechanical function and performance). Driver Assistance Driver Assistance: N/A (No electronic driver aids in the modern sense. 4WD system and braking are the primary performance-enhancing technologies). Connectivity Connectivity: N/A 🔧 Maintenance Service Intervals Initial Service: Typically at 10-20 hours or 100 miles (break-in service: oil change, filter check, chain adjustment if applicable). Engine Oil Change: Every 100 hours or 6 months (whichever comes first). Air Filter Cleaning: Every 20 hours or 2 months (more frequently in dusty conditions). Spark Plug Replacement: Inspect every 100 hours, replace as needed. Valve Clearance Check: Every 100 hours or 12 months....