The Polaris Sportsman 400 HO, produced for the 2012 and 2013 model years, is a capable mid-size All-Terrain Vehicle (ATV) designed for recreational riders, utility users, and farm operators. Known for its reliability and balanced performance, this ATV offers versatility for trail riding, hunting, and light work tasks. The Sportsman 400 HO is powered by a 375cc, liquid-cooled, 4-stroke engine and features automatic transmission with On-Demand AWD, providing robust performance and excellent traction. Its engineering emphasizes comfort, utility, and off-road capability, making it a strong contender in its segment. This comprehensive workshop service manual is your essential guide for maintaining and repairing the Polaris Sportsman 400 HO. Written in English, it covers all major systems, including detailed engine service, fuel and ignition systems, cooling, transmission, suspension, steering, braking, and electrical systems. You will find step-by-step instructions for routine maintenance, troubleshooting common issues, and complete repair procedures. The manual also includes technical specifications and diagnostic information, making it an indispensable resource for mechanical technicians and owners alike to ensure the longevity and optimal performance of their vehicle. 🏷️ Basic Information Identification Make: Polaris Model: Sportsman 400 HO Year: 2012, 2013 Product Type: Workshop Service Manual 👋 Introduction Market Position Segment: Mid-size All-Terrain Vehicle (ATV) Competitive Analysis Key Competitors: Yamaha Grizzly 450, Can-Am Outlander 400, Arctic Cat 400 TRV. Key Features Target Audience: Recreational riders, utility users, farm operators seeking a reliable and capable ATV. Versatility: Suitable for trail riding, hunting, farming, and light work tasks. 📋 Manual Details Coverage Areas Primary Coverage: Mechanical Technicians Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine Service: Complete engine overhaul, diagnosis, disassembly, assembly, component testing, timing, valve adjustments. Fuel System: Fuel pump, carburetor/fuel injection system, fuel lines, fuel filter replacement, troubleshooting. Ignition System: Spark plugs, ignition coils, CDI unit, wiring diagrams, troubleshooting. Cooling System: Radiator, hoses, thermostat, coolant flush and fill, fan operation, troubleshooting. Transmission Drivetrain: Automatic transmission service, clutch operation, drive shafts, CV joints, differential service (front and rear), gearcase maintenance. Suspension Steering: Front and rear suspension component inspection and replacement (shocks, springs, A-arms), wheel bearings, steering linkage, tie rods, alignment procedures. Braking System: Hydraulic brake system service, master cylinder, brake lines, calipers, brake pads, brake fluid flush and bleeding, parking brake adjustment. Electrical System: Battery, charging system, starter motor, lighting, accessory wiring, electrical component testing, wiring diagrams, troubleshooting electrical faults. Body Chassis: Frame inspection, body panel removal and installation, seat removal, cargo rack service, plastics repair. Procedures Included Routine Maintenance: Oil changes, filter replacements, lubrication points, tire pressure checks, chain adjustments (if applicable), spark plug replacement, air filter service. Troubleshooting: Diagnostic procedures for common malfunctions, fault code interpretation (if applicable), systematic problem-solving steps. Repair Procedures: Step-by-step instructions for component replacement, assembly, and adjustment for all covered systems. Technical Depth Depth Of Information: Comprehensive; covers everything from basic owner maintenance to complete engine and transmission rebuilds. Includes detailed diagnostic information. 📊 Manual Specifications File Format File Type: PDF Searchable Text: Likely searchable text within the PDF for efficient information retrieval. Print Quality Printability: Designed for printing, allowing users to create physical copies of sections or the entire manual. Binding Type Binding: N/A (Digital PDF) Paper Type Paper Quality: N/A (Digital PDF) ⚙️ Engine Specifications Primary Engine Engine Type: 4-stroke, SOHC, 1-cylinder Displacement: 375cc Bore X Stroke: 85 mm x 66 mm Cooling System: Liquid-cooled Performance Horsepower: Approximately 29-30 HP (specific rating varies slightly by year and tuning) Torque: Approximately 22-23 lb-ft (specific rating varies) Fuel System Fuel Delivery: Carburetor (likely Mikuni BSR42, but confirmation needed in manual) Fuel Type: Unleaded gasoline (minimum 87 octane recommended) Lubrication Oil Type: SAE 10W-40 Synthetic ATV specific engine oil Oil Capacity: Approximately 1.8 liters (check manual for exact capacity with filter change) 🔧 Transmission Standard Transmission Type: Automatic (Polaris PVT - Primary Variable Transmission) Optional Gear Selection: High (H), Low (L), Neutral (N), Reverse (R), Park (P). Features Drive System: On-Demand AWD (All-Wheel Drive) with 2WD/4WD selector. Gear Reduction: Integrated low-range gearing for enhanced pulling power and crawling. Fluids Transmission Fluid Type: Polaris Synthetic Gearcase Lube or equivalent API GL-4, SAE 75W-90 (check manual for specific part number and recommendations) 📐 Dimensions Exterior Length: Approximately 81.1 inches (2060 mm) Width: Approximately 46 inches (1168 mm) Height: Approximately 47.6 inches (1209 mm) Wheelbase: Approximately 50.5 inches (1283 mm) Weights Dry Weight: Approximately 675 lbs (306 kg) Ground Clearance: Approximately 10.25 inches (260 mm) Cargo Front Rack Capacity: Approximately 90 lbs (41 kg) Rear Rack Capacity: Approximately 200 lbs (90 kg) Towing Towing Capacity: 1,050 lbs (476 kg) Wheels Tires Front Tire Size: 25 x 8-12 Rear Tire Size: 25 x 10-12 Wheel Bolt Pattern: 4/110 🛡️ Safety Features Ratings Atv Safety Standards: Complies with ANSI standards for recreational off-highway vehicles. Active Features Braking System Type: Hydraulic disc brakes front and rear. Engine Braking: Integrated...