The 2012 Sportsman 400 HO is a versatile mid-size utility all-terrain vehicle engineered for recreational riders, hunters, farmers, and general utility users. Building on a legacy, established in 1954, this model represents a refined iteration of the fourth-generation Sportsman platform. It is known for its capability in various terrains and applications, featuring a 398.7 cc 4-stroke SOHC liquid-cooled engine, Automatic On-Demand All-Wheel Drive system for superior traction, and independent front and rear suspension for a comfortable ride and agile handling. With a robust towing capacity of 1,500 lbs and practical rack capacities, the Sportsman 400 HO is designed to tackle demanding tasks and diverse off-road adventures. This comprehensive factory service repair manual provides essential information for maintaining and repairing the 2012 Sportsman 400 HO. Covering hundreds of pages of detailed procedures in English, it encompasses all major vehicle systems. Key areas include in-depth engine service and repair, drivetrain maintenance, suspension and steering, braking systems, and electrical system diagnostics. The manual also details routine maintenance, troubleshooting common issues, component disassembly and assembly, and provides crucial technical specifications, torque values, and special tool requirements. This resource is invaluable for owners, mechanics, and technicians seeking to ensure the optimal performance, reliability, and longevity of their Sportsman 400 HO. 🏷️ Basic Information Identification Make: Polaris Model: Sportsman 400 HO Year: 2012 Product Name: Polaris Sportsman 400 HO 2012 Factory Service Repair Manual PDF Download Generation Vehicle Generation: Fourth Generation Sportsman (2009-2014) 👋 Introduction Market Position Vehicle Segment: Mid-size Utility All-Terrain Vehicle (ATV) Target Demographic: Recreational riders, hunters, farmers, and general utility users seeking a capable and reliable ATV. Competitive Analysis Key Competitors: Honda Foreman, Yamaha Kodiak, Suzuki KingQuad, Can-Am Outlander. Key Features Versatility: Known for its versatility in various terrains and applications, from trail riding to farm work. On Demand AWD: Features Polaris's Automatic On-Demand All-Wheel Drive system for enhanced traction. Independent Suspension: Equipped with independent front and rear suspension for a smoother ride and better handling. Engine Power: Provides sufficient power for its class with the 400cc High Output engine. 📋 Manual Details Coverage Areas Manual Coverage Summary: Comprehensive factory service and repair information for the 2012 Polaris Sportsman 400 HO. Page Count Manual Page Count: Hundreds of pages (specific count not provided in product description, but implies extensive detail). Manual Type Manual Type: Factory Service Repair Manual Language Manual Language: English Format Manual Format: PDF Download 📖 Manual Coverage Systems Covered Engine Service And Repair: Detailed procedures for engine disassembly, assembly, troubleshooting, diagnostics, and repair, including carburetor, ignition, cooling, and lubrication systems. Drivetrain Service And Repair: Covers primary drive, drive clutch, driven clutch, final drive, and all-wheel-drive (AWD) system maintenance and repair. Suspension And Steering Service And Repair: Detailed instructions for servicing front and rear suspension components, steering system, tie rods, and wheel alignment. Braking System Service And Repair: Includes procedures for servicing hydraulic brake systems, brake calipers, brake lines, master cylinder, and brake fluid replacement. Electrical System Service And Repair: Comprehensive coverage of the electrical system, including wiring diagrams, battery, charging system (stator, regulator/rectifier), starter, lighting, and accessories. Fuel System Service And Repair: Detailed information on the fuel tank, fuel pump, fuel lines, and carburetor (Mikuni BSR34) servicing. Cooling System Service And Repair: Procedures for radiator, fan, coolant, and hoses inspection and replacement. Exhaust System Service And Repair: Guidance on exhaust pipe, muffler, and heat shield inspection and replacement. Body And Frame Service And Repair: Includes procedures for body panel removal, installation, and frame inspection. Procedures Included Routine Maintenance And Inspections: Detailed steps for oil changes, filter replacements, spark plug checks, tire pressure, chain/belt adjustments (where applicable), and pre-ride inspections. Diagnostic Troubleshooting: Systematic approaches to diagnosing and resolving common and complex mechanical and electrical issues. Component Disassembly And Assembly: Step-by-step instructions for taking apart and putting back together all major vehicle components. Torque Specifications: Precise torque values for all critical fasteners and bolts to ensure proper assembly and prevent damage. Special Tool Requirements: Identification of any specialized tools needed for specific repair or maintenance procedures. Technical Depth Diagnostic Capability: Advanced diagnostic procedures, including interpreting fault codes and understanding system operations. Rebuild Instructions: Comprehensive guides for complete engine rebuilds, transmission overhauls, and suspension component replacements. Specification Data: Detailed technical specifications for all components, including tolerances, clearances, and performance parameters. 📊 Manual Specifications File Format File Format: PDF Print Quality Print Quality: High-resolution, suitable for printing individual pages or the entire manual. Binding Type Binding Type: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Type: 4-Stroke SOHC Displacement: 398.7 cc Bore X Stroke: 92 mm x 76 mm Cooling System: Liquid-Cooled Performance Horsepower: Approximately 29 HP (Manufacturer figures vary slightly, service manual provides definitive data) Torque: Estimated 25 lb-ft (Service manual provides specific figures) Fuel System Fuel Delivery: Mikuni BSR34 Carburetor Fuel Type: Unleaded Gasoline,...