Basic Information Identification Make: Yamaha Model: BRUIN 350 4WD / HUNTER / GRIZZLY 350 4WD / HUNTER Year: 2005 Vehicle Type: All-Terrain Vehicle (ATV) Codes Engine Code: Likely based on the Yamaha 348cc 4-stroke engine family Introduction Market Position Market Position: The 2005 Yamaha Bruin and Grizzly 350 4WD models were positioned as capable and versatile mid-size utility ATVs, catering to recreational riders, hunters, and general farm/ranch use. They offered a balance of power, maneuverability, and reliable Yamaha engineering. Competitive Analysis Competitive Analysis: Competed with similar models from Honda (e.g., FourTrax Rancher), Suzuki (e.g., KingQuad 300/345), Kawasaki (e.g., Prairie 360), and Polaris (e.g., Sportsman 335/400). Key Features Key Features: Push-button 4WD engagement, independent front suspension, reliable 348cc air-cooled engine, automatic transmission (Ultramatic), durable construction, comfortable seating position. Manual Details Coverage Areas Coverage Areas: Complete service, repair, maintenance, and overhaul for 2005 Yamaha BRUIN 350 4WD, HUNTER, GRIZZLY 350 4WD, and HUNTER models. Page Count Page Count: Estimated 300-400 pages (typical for comprehensive ATV service manuals). Manual Type Manual Type: Service Repair Maintenance Overhaul Manual Language Language: English Format Format: PDF Download Manual Coverage Systems Covered Systems Covered: Engine, Fuel System, Carburetor, Ignition System, Lubrication System, Cooling System, Transmission (Automatic), Drive System (4WD, Shaft Drive), Suspension (Front & Rear), Steering, Brakes (Front & Rear), Electrical System (Wiring Harness, Lighting, Battery), Chassis, Frame, Bodywork, Wheels & Tires, Troubleshooting. Procedures Included Procedures Included: Routine Maintenance, Scheduled Service, Troubleshooting Guides, Component Disassembly, Reassembly, Repair Procedures, Overhaul Instructions, Inspection Procedures, Component Testing, Electrical Diagnostics, Torque Specifications, Lubrication Points. Technical Depth Technical Depth: Comprehensive, suitable for professional mechanics and experienced DIY enthusiasts. Covers everything from basic fluid changes to complete engine and transmission rebuilds. Manual Specifications File Format File Format: PDF Print Quality Print Quality: High resolution, computer-generated for crisp text and clear, zoomable diagrams. Not a scanned image. Binding Type Binding Type: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) Engine Specifications Primary Engine Engine Type: 348cc, 4-stroke, SOHC, air-cooled, single-cylinder Bore X Stroke: Approx. 83 mm x 64.5 mm Compression Ratio: Likely around 9.3:1 to 9.6:1 Performance Horsepower: Estimated 20-23 HP Torque: Estimated 20-22 lb-ft Fuel System Fuel Delivery: Carburetor (likely Mikuni BSR33 or similar) Fuel Type: Unleaded gasoline, 87 octane recommended Engine Oil Oil Type: Yamalube 4 (or equivalent) SAE 10W-30 or 20W-40 (refer to manual for specific climate recommendations) Oil Capacity: Approx. 1.7 Liters (without filter change) / 1.8 Liters (with filter change) Ignition System Ignition Type: CDI (Capacitor Discharge Ignition) Cooling System Cooling Method: Air-cooled Transmission Standard Transmission Type: Automatic (Yamaha Ultramatic V-belt) Optional Gear Selection: Forward (Hi/Lo), Neutral, Reverse, Park Features Drive System: On-Demand Four-Wheel Drive (4WD) with 2WD option via push-button engagement. Shaft Drive. Transmission Fluid Transmission Fluid Type: Yamaha Genuine Gear Oil (or equivalent SAE 80 API GL-4) Transmission Fluid Capacity: Approx. 0.3 Liters Dimensions Exterior Length: Approx. 76.8 inches (1950 mm) Width: Approx. 43.7 inches (1110 mm) Height: Approx. 43.5 inches (1105 mm) Wheelbase: Approx. 49.2 inches (1250 mm) Weights Dry Weight: Approx. 564 lbs (256 kg) Ground Clearance: Approx. 10.2 inches (259 mm) Cargo Front Rack Capacity: Approx. 45 kg (99 lbs) Rear Rack Capacity: Approx. 85 kg (187 lbs) Towing Towing Capacity: Approx. 500 kg (1102 lbs) Safety Features Ratings Safety Certification: ATV Safety Institute (ASI) recommended practices apply. Active Features Braking System: Front: Dual hydraulic disc brakes; Rear: Single hydraulic disc brake. Parking Brake: Hand-operated brake lever mechanism. Passive Features Lighting: Dual 30W Krypton headlights, 8W Krypton taillight/stoplight. Handlebars: Standard handlebar with ergonomic grips and protective covers. Seat: Comfortable, contoured seat for rider and passenger (if equipped). Technology Features Infotainment Infotainment System: N/A (Basic utility ATV design, no integrated infotainment system). Driver Assistance Driver Assistance: N/A (Focus is on mechanical capability, not electronic driver aids). Connectivity Connectivity: N/A Lighting Technology Lighting Technology: Standard incandescent lighting. Maintenance Service Intervals Initial Service: First service typically at 100 km or 1 month, focusing on checking fluid levels, chain adjustment (if applicable, though this is shaft drive), and bolt torques. Engine Oil Change: Every 1000 km or 6 months, whichever comes first. Air Filter Cleaning: Every 500 km or more frequently in dusty conditions. Replacement as needed. Spark Plug Inspection: Every 1000 km. Replace as needed. Transmission Oil Change: Every 2000 km or annually. Brake Fluid Check: Every 500 km. Replace brake fluid every 2 years. Fluid Specifications Coolant Type: N/A (Air-cooled engine) Brake Fluid Type: DOT 3 or DOT 4 hydraulic brake fluid Known Issues Common Wear Items: Brake pads, tires, air filter, spark plug, drive belts (in CVT). Potential Issues: Carburetor gumming if fuel sits for extended periods, potential for occasional overheating in extreme conditions (though air-cooling is robust), U-joint wear on drive shafts with high mileage or heavy use. Vehicle History Brand Heritage Brand Heritage: Yamaha has a long-standing reputation for producing reliable,...