The 2009 Sportsman 400 is a versatile All-Terrain Vehicle (ATV) designed for a wide range of users, including recreational riders, hunters, farmers, and utility tasks. Known for its robust chassis and capable Independent Rear Suspension (IRS), this mid-size utility ATV offers a balance of power and manageable size. It features a 376cc, 4-stroke, liquid-cooled engine with a Single Overhead Camshaft and four valves, delivering reliable performance for various terrains and applications. The Sportsman line, a cornerstone of ATV offerings, is recognized for its comfort, handling, and utility, making the 400 model a dependable choice for demanding activities. This comprehensive Factory Service Repair Manual in English provides detailed guidance for the maintenance and repair of your 2009 Sportsman 400 ATV. It covers all essential systems, including the engine, fuel, ignition, cooling, transmission, drivetrain, suspension, steering, braking, and electrical systems. Within its hundreds of pages, you will find routine maintenance procedures, troubleshooting guides, complete disassembly and reassembly instructions, diagnostic charts, and precise torque specifications. This manual is an indispensable resource for owners, mechanics, and technicians aiming to ensure optimal performance, longevity, and safety of the vehicle through accurate service and repair. 🏷️ Basic Information Identification Make: Polaris Model: Sportsman 400 Year: 2009 Codes Vehicle Type: ATV (All-Terrain Vehicle) 👋 Introduction Market Position Segment: Mid-size utility ATV Target User: Recreational riders, hunters, farmers, and utility users Competitive Analysis Key Competitors 2009: Can-Am Outlander 400, Honda FourTrax Foreman 4x4, Yamaha Grizzly 450, Suzuki KingQuad 400 Key Features Vehicle Platform: Known for its robust chassis and capable Independent Rear Suspension (IRS) Powertrain Emphasis: Focus on reliable engine performance and versatile AWD/2WD system 📋 Manual Details Coverage Areas Manual Type: Factory Service Repair Manual Language: English Format: PDF Download Page Count Estimated Page Count: Hundreds of pages 📖 Manual Coverage Systems Covered Engine Service: Engine disassembly, assembly, diagnosis, and repair Fuel System Service: Fuel pump, carburetor/fuel injection, fuel lines, fuel tank maintenance Ignition System Service: Spark plugs, ignition coil, CDI unit, wiring Cooling System Service: Radiator, fan, coolant hoses, thermostat, water pump Transmission Service: Automatic transmission (PVT), clutch maintenance, gearcase service Drivetrain Service: Axles, CV joints, driveshafts, differential maintenance Suspension Service: Front and rear suspension components, shock absorbers, control arms, bushings Steering System Service: Handlebars, tie rods, steering shaft, steering column maintenance Braking System Service: Front and rear brakes, calipers, rotors, brake lines, master cylinder Electrical System Service: Battery, charging system, lighting, starter motor, wiring diagrams Chassis And Body Service: Frame, body panels, plastics, seat, racks Procedures Included Routine Maintenance: Oil changes, filter replacements, lubrication, adjustments Troubleshooting Guides: Diagnostic procedures for common and uncommon issues Complete Disassembly And Reassembly: Step-by-step instructions for major component overhauls Diagnostic Charts: Systematic troubleshooting based on symptoms Torque Specifications: Precise torque values for critical fasteners Technical Depth Diagnostic Capabilities: Advanced diagnostics for engine, electrical, and drivetrain systems Repair Scope: From basic fluid changes to complete engine and transmission rebuilds Information Detail: Detailed schematics, diagrams, and step-by-step instructions 📊 Manual Specifications File Format File Type: PDF Searchability: Likely text-searchable (standard for factory PDFs) Print Quality Printable: Yes, allows printing of entire manual or selected pages Binding Type Binding Type: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Type: 4-stroke, Liquid-Cooled, SOHC, 4-valve Engine Displacement: 376cc Bore X Stroke: 92 mm x 72 mm Compression Ratio: 10.2:1 Performance Horsepower Estimate: Approx. 30 HP (This is a general estimate for the class, specific figures vary) Torque Estimate: Approx. 23 lb-ft (General estimate) Fuel System Fuel Delivery: Mikuni BSR42 carburetor (likely on 400 model for 2009, check specific VIN) Fuel Type: Unleaded gasoline, 87 octane minimum Engine Components Cylinder Arrangement: Single Cylinder Valve Train: SOHC (Single Overhead Camshaft) with 4 valves Lubrication System Oil Type: Polaris Premium 4 Synthetic 0W-40 (or equivalent API SG or higher) Oil Capacity: Approx. 2.4 L (2.5 US qt) with filter change 🔧 Transmission Standard Transmission Type: Polaris Variable Transmission (PVT) with engine braking Gear Selection: High, Low, Neutral, Reverse, Park Features Drive System: On-Demand All-Wheel Drive (AWD) / 2WD Gearcase Oil Type: Polaris Synthetic Gearcase Lubricant SAE 75W-90 (or equivalent) Gearcase Oil Capacity: Approx. 0.3 L (0.3 US qt) 📐 Dimensions Exterior Length: 217.2 cm (85.5 in) Width: 116.8 cm (46 in) Height: 121.9 cm (48 in) Weights Dry Weight: Approx. 297 kg (655 lbs) Ground Clearance: 25.4 cm (10 in) Cargo Front Rack Capacity: 45.4 kg (100 lbs) Rear Rack Capacity: 90.7 kg (200 lbs) Towing Towing Capacity: 660 kg (1,455 lbs) Hitch Type: Standard 1.25 in (3.2 cm) receiver 🛡️ Safety Features Ratings Atv Safety Standards: Complies with ANSI and ASTM standards for recreational ATVs Active Features Braking System: Hydraulic disc brakes front and rear Passive Features Rollover Protection: Reinforced front and rear racks designed to act as roll protection Handlebars: Ergonomically designed handlebars with thumb throttle for control...