🏷️ Basic Information Identification Make: Polaris Model: Sportsman 400 H.O. Year: 2009 Vehicle Type: ATV (All-Terrain Vehicle) Codes Vin Code: Refer to vehicle's VIN plate Engine Code: Likely refers to the 375cc engine variant 👋 Introduction Market Position Market Position: The 2009 Polaris Sportsman 400 H.O. was positioned as a mid-range, versatile ATV, suitable for utility work, recreational trail riding, and hunting. It offered a balance of performance, comfort, and Polaris's renowned 4x4 capability at a competitive price point. Competitive Analysis Competitive Analysis: Competed directly with models like the Can-Am Outlander 400, Yamaha Grizzly 450, Honda Foreman 4x4, and Arctic Cat 400. Key selling points included its Independent Rear Suspension (IRS), powerful H.O. engine for its class, and the Polaris Lock & Ride accessory system. Key Features Key Features: 375cc 4-stroke engine, Automatic PVT (Polaris Variable Transmission) with High/Low range and Reverse, On-Demand All-Wheel Drive (AWD), Independent Rear Suspension (IRS), Hydraulic Disc Brakes, 12-volt accessory outlet, Engine Braking System (EBS), comfortable seating and ergonomics, Polaris Lock & Ride system compatibility. 📋 Manual Details Coverage Areas Coverage Areas: Engine, Transmission, Drivetrain, Suspension, Steering, Brakes, Electrical System, Fuel System, Cooling System, Chassis, Bodywork, Troubleshooting, Maintenance, Specifications Page Count Page Count: Estimated 300-500 pages (typical for comprehensive service manuals) Manual Type Manual Type: Service and Repair Manual Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Systems Covered: Engine (internal and external components), Automatic Transmission (PVT), Final Drive (AWD/2WD), Front and Rear Suspension, Steering System, Hydraulic Disc Brakes, 12V Electrical System (including lighting, ignition, starting, charging), Carburetor Fuel System, Air Cooling System, Exhaust System, Frame and Chassis, Body Panels and Plastics Procedures Included Procedures Included: Routine Maintenance (oil changes, filter replacements, lubrication), Scheduled Service Intervals, Engine Overhaul and Reassembly, Transmission Diagnosis and Repair, Drivetrain Component Inspection and Replacement, Suspension Adjustments and Component Replacement, Steering System Maintenance and Repair, Brake System Bleeding and Component Replacement, Electrical System Troubleshooting (wiring diagrams included), Fuel System Cleaning and Adjustment, Carburetor Tuning, Cooling System Flushes and Component Checks, Chassis Inspection and Repair, Bodywork Alignment and Fastener Tightening, Diagnostic Procedures, Component Specifications and Tolerances Technical Depth Technical Depth: Comprehensive. Covers from basic owner-level maintenance to advanced diagnostic and repair procedures requiring specialized tools. Includes detailed step-by-step instructions, torque specifications, wiring diagrams, and exploded views. 📊 Manual Specifications File Format File Format: Portable Document Format (PDF) Print Quality Print Quality: High-resolution scans suitable for printing; includes clear text, diagrams, and images. Binding Type Binding Type: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Primary Engine: 375cc, 4-stroke, liquid-cooled, SOHC, single-cylinder engine Performance Horsepower: Approximately 26-28 HP (peak) Torque: Estimated 22-24 lb-ft Fuel System Fuel System: Mikuni BNS34 carburetor Ignition Ignition System: CDI (Capacitor Discharge Ignition) Cooling Cooling System: Liquid-cooled 🔧 Transmission Standard Transmission Type: Polaris Variable Transmission (PVT) Gear Selection: Park, Reverse, Neutral, Low, High Optional Optional Transmission: N/A (PVT is standard) Features Drive Modes: 2WD / On-Demand AWD Engine Braking: Standard on PVT system 📐 Dimensions Exterior Length: Approx. 81 inches Width: Approx. 46 inches Height: Approx. 45 inches Wheelbase: Approx. 50.5 inches Weights Dry Weight: Approx. 640 lbs Ground Clearance: Approx. 10.5 inches Cargo Front Rack Capacity: 100 lbs Rear Rack Capacity: 200 lbs Towing Capacity: 1,500 lbs Dimensions Fuel Capacity: 4.0 gallons 🛡️ Safety Features Ratings Safety Ratings: ATVs are not subject to formal automotive crash test ratings like cars. Safety relies on design, rider skill, and adherence to safe operating practices. Active Features Active Features: On-Demand AWD, Engine Braking System (EBS), powerful hydraulic disc brakes, thumb throttle with safety lever. Passive Features Passive Features: Ergonomic handgrips, comfortable seat, integrated footwells, sturdy frame construction. 💡 Technology Features Infotainment Infotainment Features: Basic functionality: 12-volt accessory outlet for charging devices or powering accessories. No integrated audio or navigation systems on this model. Driver Assistance Driver Assistance Features: On-Demand AWD system enhances traction, Engine Braking System aids in downhill control. Connectivity Connectivity Features: N/A (No electronic connectivity features) Instrumentation Instrumentation: Digital/Analog combination meter including speedometer, odometer, trip meter, tachometer, fuel gauge, engine hour meter, 2WD/AWD indicator, high/low gear indicator, and warning lights. 🔧 Maintenance Service Intervals Initial Service: Refer to manual; typically first oil change around 10-20 hours or 1 month. Regular Oil Change: Every 100 hours or 6 months (whichever comes first), check manual for specific recommendations. Air Filter Maintenance: Inspect every 20 hours, clean or replace as needed, especially in dusty conditions. Spark Plug Replacement: Refer to manual; typically every 100-200 hours or annually. Fluid Specifications Engine Oil Type: Polaris PS-4 Full Synthetic 5W-50 (or equivalent API SG rated oil) Engine Oil Capacity: Approx. 1.7 US quarts (1.6 Liters) with filter change Transmission Fluid Type: Polaris PVT Fluid (or equivalent SAE 140 gear oil for certain PVT components if specified) Brake Fluid Type: DOT 3 or DOT 4...