Basic Information Identification Make: Yamaha Model: Grizzly 350 4WD / Hunter Year: 2009 Codes Chassis Codes: Likely variations of YFM350FG for Grizzly, YFM350FW for Bruin (specific codes would be detailed in the manual) Introduction Market Position Market Position: The 2009 Yamaha 350cc 4WD ATVs (Bruin and Grizzly variants) were positioned as capable, mid-size utility ATVs suitable for recreational riding, light farm work, and trail exploration. They offered a balance of features, performance, and Yamaha's renowned reliability. Competitive Analysis Competitive Analysis: Competed directly with models like the Polaris Sportsman 400/500, Arctic Cat 400/500, and Suzuki King Quad 400/500. Yamaha's emphasis on build quality, smooth power delivery, and user-friendly operation were key selling points. Key Features Key Features: Electronic fuel injection (EFI) on some models, 4WD with differential lock, independent rear suspension (IRS), automatic transmission (CVT), ample ground clearance, durable chassis, robust engine. Manual Details Coverage Areas Coverage Areas: Engine, Transmission, Drivetrain, Suspension, Brakes, Electrical System, Fuel System, Cooling System, Chassis, Bodywork, Troubleshooting, Maintenance, Overhaul Page Count Page Count: Not explicitly stated, but typically service manuals for this era are extensive, likely 300+ pages. Manual Type Manual Type: Service Repair Maintenance Overhaul Manual Language Language: English Format Format: PDF Download Manual Coverage Systems Covered Systems Covered: Engine mechanicals (top end, bottom end), fuel injection/carburetion, ignition, starting system, charging system, drivetrain (CVT, gears, driveshafts, differentials), suspension components, steering, braking system (hydraulic lines, calipers, master cylinders), lighting, instrumentation, wiring diagrams, frame, body panels, radiators, cooling fan. Procedures Included Procedures Included: Routine maintenance (oil changes, filter replacements, spark plug checks), detailed disassembly and reassembly instructions for all major components, troubleshooting guides for common electrical and mechanical issues, component inspection and testing procedures, torque specifications, valve clearance adjustments, clutch and drive belt inspection/replacement, carburetor/fuel injector cleaning and adjustment, brake bleeding, suspension alignment checks, electrical diagnostics. Technical Depth Technical Depth: Comprehensive, covering everything from basic maintenance to full engine and transmission rebuilds. Includes detailed diagnostic procedures, specifications, and tolerances required by professional technicians. Manual Specifications File Format File Format: PDF Print Quality Print Quality: High quality, computer-generated (not scanned). Enables lossless zooming of text and diagrams. Binding Type Binding Type: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) Engine Specifications Primary Engine Primary Engine: 348cc, Liquid-Cooled, 4-Stroke, SOHC, 2-Valve, Single-Cylinder Performance Horsepower: Approximately 20-22 HP (specific figures may vary slightly by model variant and tune). Torque: Estimated around 20-22 lb-ft (specific figures may vary slightly by model variant and tune). Fuel System Fuel System: Mikuni BSR33 carburetor (on some Bruin/Grizzly 350 models) or Electronic Fuel Injection (EFI) system. Bore X Stroke Bore X Stroke: 83 mm x 64.5 mm Compression Ratio Compression Ratio: 9.2:1 Cooling System Cooling System: Liquid-cooled with fan and radiator Transmission Standard Transmission: Yamaha Ultramatic® Automatic Transmission (CVT) with Engine Braking Optional Optional: N/A (CVT was standard across these models) Features Features: Continuously Variable Transmission (CVT) with high/low range and reverse. Provides smooth acceleration and optimal engine RPM for various conditions. Engine braking is a significant feature for downhill control. Drive System Drive System: 2WD/4WD with on-command push-button engagement and locking front differential. Dimensions Exterior Length: Approximately 76.8 inches (1950 mm) Width: Approximately 42.5 inches (1080 mm) Height: Approximately 44.3 inches (1125 mm) Wheelbase: Approximately 49.2 inches (1250 mm) Ground Clearance: Approximately 10.5 inches (267 mm) Weights Dry Weight: Approximately 575 lbs (261 kg) Cargo Rack Capacity Front: 45 kg (99 lbs) Rack Capacity Rear: 85 kg (187 lbs) Towing Capacity: Approximately 1,102 lbs (500 kg) Tires Front Tire Size: AT25 x 8-12 Rear Tire Size: AT25 x 10-12 Wheels Wheel Bolt Pattern: N/A (Typically Hub-centric with lugs) Safety Features Ratings Ratings: ATV safety is heavily reliant on operator skill and adherence to trailering/operation guidelines. Specific crash ratings are not applicable as for passenger vehicles. Active Features Active Features: Engine braking, strong hydraulic disc brakes, on-command 4WD with differential lock for enhanced traction, low center of gravity design. Passive Features Passive Features: Durable steel frame, ergonomic seating position, integrated floorboards with heel guards, handguards (on some Hunter models). Technology Features Infotainment Infotainment: Basic instrumentation including speedometer, odometer, trip meter, hour meter, fuel gauge, and indicator lights. No advanced infotainment features. Driver Assistance Driver Assistance: Electronic Fuel Injection (EFI) for improved throttle response and cold starting (on EFI models). Automatic transmission with engine braking provides ease of use and control. Connectivity Connectivity: N/A Maintenance Service Intervals Service Intervals: Refer to manual for specific intervals. Typical intervals include: Oil & Filter Change - every 6 months or 1,000 miles (whichever comes first), Air Filter Cleaning/Replacement - as needed based on conditions, Spark Plug Check/Replacement - every 12 months or 2,000 miles, Valve Clearance Check - every 12 months or 2,000 miles, Drive Belt Inspection - every 6 months or 1,000 miles. Drivetrain oil changes are also critical. Fluid Specifications Engine Oil: Yamalube 4W SAE...