The 2009 Sportsman 400 HO is a versatile mid-size all-terrain vehicle designed for recreational riders, farmers, hunters, and light utility users. Engineered with renowned quality, this ATV offers robust performance and reliability, featuring key technologies such as On-Demand AWD for optimal traction and Active Descent Control (ADC) for enhanced downhill control. Its comfortable seating and durable chassis make it well-suited for tackling challenging terrain and completing various tasks. This comprehensive Service Repair Manual provides essential information for the maintenance and repair of your 2009 Sportsman 400 HO. It covers a wide range of topics, including detailed engine and transmission service, fuel and ignition system diagnostics, brake and suspension maintenance, and electrical system troubleshooting. With step-by-step repair instructions, scheduled maintenance guidelines, and clear wiring diagrams, this manual is an indispensable resource for owners and technicians seeking to ensure the longevity and optimal performance of their ATV. 🏷️ Basic Information Identification Make: Polaris Model: Sportsman 400 HO Year: 2009 Vehicle Type: All-Terrain Vehicle (ATV) Codes Vin Decoder Notes: VINs for Polaris ATVs typically start with '4X4' followed by model and year identifiers. 👋 Introduction Market Position Segment: Mid-size utility ATV. Target Audience: Recreational riders, farmers, hunters, and light utility users. Competitive Analysis Competitors: Honda Foreman, Yamaha Kodiak, Can-Am Outlander 400. Key Features Features: Polaris Active Descent Control (ADC), Polaris On-Demand AWD, comfortable seating, robust chassis. Manual Advantage Digital Format Benefit: Easily accessible, searchable, and portable compared to traditional paper manuals. 📋 Manual Details Coverage Areas Primary Coverage: Comprehensive service and repair for the 2009 Polaris Sportsman 400 HO. Secondary Coverage: Includes maintenance schedules, troubleshooting guides, and diagnostic procedures. Page Count Estimated Page Count: 300-400 Manual Type Type: Service Repair Manual Language Language: English Format Format: PDF 📖 Manual Coverage Systems Covered Engine: Detailed diagnosis, repair, and overhaul of the Polaris 375cc, 4-stroke, liquid-cooled engine. Fuel System: Carburetor adjustment, cleaning, and replacement; fuel pump diagnosis. Ignition System: Ignition coil testing, spark plug specifications, CDI unit troubleshooting. Cooling System: Radiator, fan, thermostat, and coolant replacement procedures. Exhaust System: Muffler and exhaust pipe inspection and replacement. Transmission: PVT (Polaris Variable Transmission) system, belt replacement, roller inspection, clutch service. Drivetrain: Front and rear differential service, driveshaft inspection, U-joint service. Suspension: Front and rear shock absorber adjustment and replacement; A-arm and bushing service. Steering: Tie rod end inspection, steering column service, potential for EPS (Electronic Power Steering) diagnosis if equipped. Brakes: Hydraulic brake system maintenance, caliper service, brake pad replacement, fluid flushing and bleeding procedures. Electrical System: Battery testing and replacement, charging system (stator, voltage regulator) diagnosis, lighting system troubleshooting, starter motor service. Body And Chassis: Frame inspection, plastic panel removal and installation, seat service. Wheels And Tires: Tire pressure recommendations, wheel bearing service, lug nut torque specifications. Procedures Included Maintenance: Scheduled maintenance tasks, oil changes, filter replacements, lubrication points. Troubleshooting: Systematic diagnostic flowcharts for common problems and component failures. Repair: Step-by-step instructions for component disassembly, repair, and reassembly. Rebuild: Complete engine and transmission rebuild procedures with torque specifications. Wiring Diagrams: Detailed electrical system wiring diagrams for accurate troubleshooting. Technical Depth Depth: Comprehensive from basic owner maintenance to advanced engine and transmission rebuilds. Diagnostic Capabilities: Includes procedures for diagnosing electrical faults, mechanical issues, and performance problems. 📊 Manual Specifications File Format File Type: PDF Searchability: Searchable text for quick information retrieval. Print Quality Printability: Printable pages for workshop use. Binding Type Binding: N/A (Digital PDF) Paper Type Paper Quality: N/A (Digital PDF) ⚙️ Engine Specifications Primary Engine Engine Type: 4-stroke, SOHC, 4-valve, Single Cylinder Displacement: 375 cc Bore X Stroke: 85 mm x 66 mm Cooling System: Liquid-cooled Performance Horsepower: Approximately 27 HP (actual figures may vary slightly by source and testing conditions) Torque: Not explicitly stated in product description, but typically in the 20-25 lb-ft range. Fuel System Carburetor: Keihin CVK-34 (typical for this engine) Fuel Type: Unleaded gasoline, 87 octane or higher Lubrication Oil Type: SAE 20W-50 or 10W-40 Motorcycle/ATV specific oil Oil Capacity: Approx. 2.0 quarts (1.9 liters) with filter change 🔧 Transmission Standard Type: Polaris Variable Transmission (PVT) with Engine Braking Drive: Shaft Drive Gear Selection: Automatic High/Low Range, Neutral, Reverse Features Engine Braking: Standard feature providing downhill control. Fluid Specifications Cvt Fluid: SAE 20W-50 Transmission/Clutch Fluid (specific Polaris fluid recommended) 📐 Dimensions Exterior Length: 81 in (205.7 cm) Width: 46 in (116.8 cm) Height: 47 in (119.4 cm) Wheelbase: 50.5 in (128.3 cm) Weights Dry Weight: 602 lbs (273 kg) Ground Clearance: 11.25 in (28.6 cm) Cargo Front Rack Capacity: 100 lbs (45.4 kg) Rear Rack Capacity: 200 lbs (90.7 kg) Towing Towing Capacity: 1,500 lbs (680.4 kg) Wheels And Tires Front Tires: 25 x 8-12 Rear Tires: 25 x 10-12 Wheel Bolt Pattern: 4/110 mm 🛡️ Safety Features Ratings Crash Test Ratings: N/A (ATVs are not subject to the same crash testing as passenger vehicles). Active Features AWD System: Polaris On-Demand...