The 2012 Sportsman 400 H.O. is a capable and versatile All-Terrain Vehicle (ATV) designed for both recreational trail riding and utility tasks. As part of the Fourth Generation Sportsman, it builds upon a strong heritage in powersports, known for its pioneering role since 1954. This model features a signature On-Demand True All-Wheel Drive (AWD) system for superior traction, independent rear suspension (IRS) for a comfortable ride, and an enhanced output (H.O.) engine for improved performance. Its design prioritizes a balance of power, maneuverability, and rider comfort, making it a competitive option in the mid-range ATV market. This comprehensive Service and Repair Manual provides detailed information essential for the maintenance, diagnosis, and repair of your 2012 Sportsman 400 H.O. It covers a wide range of systems including the engine, fuel systems, body, and suspension, offering in-depth procedures for component disassembly, assembly, inspection, and adjustment. Within its pages, you will find routine maintenance schedules, fluid specifications, troubleshooting guides for common issues, and technical data. This manual is an indispensable resource for owners, mechanics, and technicians seeking to ensure the optimal performance and longevity of their ATV. 🏷️ Basic Information Identification Make: Polaris Model: Sportsman 400 H.O. Year: 2012 Vehicle Type: All-Terrain Vehicle (ATV) Generation Generation: Fourth Generation Sportsman 👋 Introduction Market Position Market Position: The Polaris Sportsman 400 H.O. 2012 is positioned as a capable and versatile mid-range ATV, offering a balance of power and maneuverability for recreational and utility purposes. It competes in a segment that values reliability, ease of use, and good value for money. Competitive Analysis Competitive Analysis: Competitors at this displacement and price point typically include models from Yamaha (Grizzly 400/450), Can-Am (Outlander 400), and Suzuki (KingQuad 400). The 400 H.O. aims to differentiate through Polaris's known features like On-Demand AWD and comfort-oriented suspension. Key Features Key Features: Known for its independent rear suspension (IRS), Polaris's signature On-Demand True All-Wheel Drive (AWD) system, and a comfortable riding posture. The 'H.O.' designation signifies an enhanced output engine. 📋 Manual Details Coverage Areas Coverage Areas: General, Maintenance, Engine, Fuel Systems, Body, Suspension Page Count Page Count: Not specified (typical for PDF downloads) Manual Type Manual Type: Service and Repair Manual Language Language: English Format Format: PDF / WINRAR 📖 Manual Coverage Systems Covered Engine: Detailed information on the 400 H.O. engine, including disassembly, assembly, inspection, and component specifications. Fuel System: Covers fuel injection system (if applicable for 2012 H.O. model, otherwise carburetor details), fuel pump, lines, and filters. Maintenance: Routine checks, lubrication points, filter replacements, fluid changes, and general upkeep procedures. Suspension: Details on front and rear suspension components, shock absorbers, A-arms, bushings, and adjustment procedures. Body: Information related to body panels, fenders, racks, seat, and associated hardware for maintenance and repair. Procedures Included Engine Repair: Complete engine overhaul, piston and cylinder inspection/replacement, valve adjustments, and timing procedures. Fuel System Troubleshooting: Diagnosis and repair of fuel delivery issues, carburetor (if applicable) cleaning and adjustment, injector diagnostics. Suspension Adjustment: Preload and damping adjustments for optimal performance and rider comfort. Electrical System: While not explicitly listed, a comprehensive service manual typically includes diagnostics for the ignition, lighting, and charging systems. Cooling System: Maintenance and repair of the radiator, fan, coolant, and related hoses (typically liquid-cooled for this model). Technical Depth Technical Depth: Comprehensive, covering detailed diagnostics, repair procedures, component specifications, torque values, and troubleshooting guides suitable for professional technicians and advanced DIY users. 📊 Manual Specifications File Format File Format: PDF (Portable Document Format) and WinRAR archive for download. Print Quality Print Quality: High-resolution, suitable for printing detailed diagrams and text. Binding Type Binding Type: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) Compatibility Compatibility: Compatible with Windows (95, 98, ME, XP, Vista, 7, 8), Linux, MAC operating systems, and all devices running iOS and Android. Delivery Delivery: Instant download via email after purchase. ⚙️ Engine Specifications Primary Engine Engine Type: 4-stroke, liquid-cooled, SOHC, single-cylinder Displacement: Approximately 398cc (specific bore and stroke would be detailed in the manual) Bore X Stroke: Typical for this class; precise figures found in manual. Horsepower: Around 30 HP (estimated, exact figure in manual). Torque: Specific torque figures available in the manual. Performance Ignition: Electronic Ignition Cooling System: Liquid Cooling with Fan Fuel System Fuel Delivery: Fuel Injection (EFI) or Carburetor depending on specific sub-model/region. Manual will detail the exact system. Fuel Type: Unleaded Gasoline (Octane rating specified in manual) Fuel Tank Capacity: Typically around 3.3 gallons (12.5 L). 🔧 Transmission Standard Transmission Type: Automatic (PVT - Polaris Variable Transmission) with Engine Braking Drive Select: 2WD / AWD (On-Demand True AWD) Gear Selection: High, Low, Neutral, Reverse, Park Features Clutch Type: CVT (Continuously Variable Transmission) with Belt Drive Final Drive: Sealed Chain Drive 📐 Dimensions Exterior Length: Approx. 81.5 inches (207 cm) Width: Approx. 46 inches (117 cm) Height: Approx. 48 inches (122 cm) Wheelbase:...