The 2009 Sportsman 400 HO is a capable and versatile all-terrain vehicle designed for recreational riding, utility tasks, and light trail work. Building on an extensive history in off-road vehicle manufacturing, this model is recognized for its robust engineering and reliable performance. Key features include an On-Demand All-Wheel Drive system for superior traction, independent rear suspension for a smoother ride, and the Variable Transmission with engine braking, enhancing control on varied terrain. The Sportsman 400 HO offers a balanced combination of power, comfort, and utility, making it a strong contender in its segment. This comprehensive workshop manual provides detailed service and repair instructions for the 2009 Sportsman 400 HO. It covers all essential systems, including engine mechanicals, fuel, ignition, cooling, transmission, brakes, suspension, steering, and electrical components. The manual includes step-by-step repair procedures, diagnostic tests, troubleshooting guidance, and essential technical specifications such as torque values and fluid recommendations. Designed for owners, mechanics, and technicians, this manual is an invaluable resource for performing scheduled maintenance, diagnosing issues, and completing repairs to ensure the longevity and optimal performance of the vehicle. 🏷️ Basic Information Identification Make: Polaris Model: Sportsman 400 HO Year: 2009 Product Type: Service Repair Workshop Manual Product Format: PDF Download 👋 Introduction Market Position Positioning: The Polaris Sportsman 400 HO 2009 is positioned as a capable and versatile mid-size ATV, suitable for recreational riding, utility tasks, and light trail work. It aims to offer a balance of power, comfort, and value within the Polaris lineup. Competitive Analysis Competitors: Competes with similar offerings from brands like Can-Am (Outlander 400), Honda (FourTrax 400 AT), Yamaha (Grizzly 400), and Suzuki (KingQuad 400). Key Features Features: On-Demand All-Wheel Drive (AWD), independent rear suspension (IRS), electric power steering (optional on some trims), engine braking, Polaris PVT (Polaris Variable Transmission) with engine braking. Manual Value Value Proposition: This manual is essential for owners and technicians looking to maintain, diagnose, and repair the 2009 Polaris Sportsman 400 HO, providing dealership-level technical information to ensure longevity and optimal performance. 📋 Manual Details Coverage Areas Coverage: Comprehensive service and repair instructions for the 2009 Polaris Sportsman 400 HO. Page Count Estimated Pages: High (typical for comprehensive workshop manuals, often 300+ pages) Manual Type Type: Workshop Manual / Service Manual / Repair Manual Language Language: English Format Format: PDF (Digital Download) 📖 Manual Coverage Systems Covered Engine Mechanical: Engine disassembly, assembly, overhaul, valve adjustment, piston/cylinder inspection, crankshaft and connecting rod service. Engine Fuel System: Carburetor overhaul and adjustment, fuel pump, fuel filter, fuel lines. Engine Ignition System: Ignition timing, spark plug specifications, ignition coil testing. Engine Cooling System: Radiator, fan, coolant flushing and replacement, thermostat. Transmission Drivetrain: CVT system (Primary and Secondary Clutch service, belt inspection/replacement), Gearcase disassembly and assembly, driveshaft, differential service. Brakes: Brake pad replacement, caliper service, brake fluid flush and bleeding, master cylinder service. Suspension: Front and rear shock absorber service, A-arm bushings, steering linkage components. Steering: Steering column, tie rod ends, steering rack inspection and adjustment. Electrical System: Wiring diagrams, battery maintenance, charging system (stator, regulator/rectifier), starter motor, lighting, instrumentation. Frame Chassis: Frame inspection, body panel removal and installation, seat assembly. Wheels Tires: Tire pressure recommendations, wheel bearing inspection and replacement, lug nut torque specifications. Procedures Included Scheduled Maintenance: Oil change intervals, filter replacement, valve clearance checks, lubrication points, drive belt inspection. Troubleshooting: Diagnostic flowcharts for common starting, running, and electrical issues. Repair Procedures: Step-by-step instructions for component replacement and overhaul. Diagnostic Tests: Specific tests for ignition, charging, fuel system components. Torque Specifications: Precise torque values for all critical fasteners. Technical Depth Depth: Comprehensive, covering everything from basic maintenance to complete engine and transmission rebuilds. Detail Level: Detailed illustrations, diagrams, and exploded views. 📊 Manual Specifications File Format Format: PDF Print Quality Quality: High-resolution, suitable for printing specific sections or the entire manual. Binding Type Binding: N/A (Digital Download) Paper Type Paper: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Type: 4-Stroke Single Cylinder Engine Displacement: 375cc (approximate, often rounded up or specified by internal designation) Bore X Stroke: Not explicitly stated, but typical for its class. Cooling System: Liquid-Cooled Valvetrain: SOHC (Single Overhead Camshaft), 2 Valves per cylinder Performance Horsepower: Approx. 28-30 HP (exact figures vary slightly by source) Torque: Not explicitly stated, but robust low-end torque for utility. Fuel System Fuel Delivery: Carburetor (Mikuni BSR33). Fuel Type: Unleaded Gasoline (91 octane recommended) Fuel Tank Capacity: 3.3 gallons (12.5 Liters) 🔧 Transmission Standard Type: Polaris Variable Transmission (PVT) Automatic with Engine Braking Drive Modes: 2WD/AWD On-Demand Gear Selection: High, Low, Neutral, Reverse, Park Features Engine Braking: Integrated engine braking for controlled descents. Cvtoverdrive Gear: N/A (CVT provides continuously variable ratios). Fluid Specifications Gearcase Oil: Polaris Premium Synthetic Gearcase Lubricant or equivalent SAE 75W-90 (API GL-4 or GL-5). 📐 Dimensions Exterior Length: 81.5 inches (207 cm) Width: 46 inches (117 cm) Height: 48 inches...