The 2009 Sportsman 300 HO and 400 HO represent capable all-terrain vehicles designed for a balance of recreational use and light work. These ATVs are known for their robust engineering and reliable performance, offering a comfortable ride with independent front suspension and a dependable automatic CVT transmission. The Sportsman line has a heritage of innovation in the powersports industry, with these models providing a solid platform for tackling various terrains and tasks, reflecting a commitment to quality and user experience. This comprehensive factory service and repair manual provides essential information for the maintenance, diagnosis, and repair of the 2009 Sportsman 300 HO and 400 HO ATVs. It covers all major systems, including the engine, fuel, lubrication, cooling, transmission, steering, suspension, brakes, and electrical components. Detailed procedures for routine maintenance, troubleshooting common issues, and performing in-depth repairs or overhauls are included, along with critical technical specifications, torque values, and exploded views to assist owners, mechanics, and technicians in keeping these vehicles in optimal working condition. 🏷️ Basic Information Identification Make: Polaris Model: Sportsman 300 HO / 400 HO Model Year: 2009 Vehicle Type: All-Terrain Vehicle (ATV) Codes Oem Part Number Indicator: Implied through OEM manual sourcing 👋 Introduction Market Position Positioning: Mid-size utility ATV, offering a balance of power and maneuverability for recreational and light work tasks. Competitive Analysis Competitors 2009: Honda Rancher, Yamaha Grizzly 350/400, Can-Am Outlander 400. Key Features Powertrain: 4-stroke engine, automatic transmission (CVT). Drivetrain: Switchable 2WD/4WD (likely on 400 HO, potential for 2WD only on 300 HO, needs verification from manual). Suspension: Independent Front Suspension (IFS), Swingarm Rear Suspension. 📋 Manual Details Coverage Areas Models Covered: 2009 Polaris Sportsman 300 HO ATV, 2009 Polaris Sportsman 400 HO ATV Regions Covered: Global (specifications typically North American focus unless otherwise noted in manual) Page Count Estimated Page Count: Variable, typically 300-600 pages for a comprehensive service manual Manual Type Type: OEM Factory Service/Repair Manual Primary Purpose: Repair, maintenance, and diagnostics Language Language: English Format Format: Downloadable PDF 📖 Manual Coverage Systems Covered Engine: Comprehensive coverage including disassembly, assembly, inspection, and repair. Fuel System: Carburetor (likely Keihin or similar), fuel pump, fuel filter, fuel lines, and tank. Lubrication Cooling: Oil pump, oil filter, oil passages, coolant system (if liquid-cooled), radiator, fan. Transmission Drive: CVT (Continuously Variable Transmission) operation, belt replacement, roller maintenance, drive clutch, driven clutch, final drive, chain/shaft drive specifics. Steering: Handlebar, steering stem, tie rods, ball joints, wheel alignment. Suspension: Front and rear shocks, springs, bushings, control arms, A-arms. Brakes: Hydraulic brake system, caliper service, master cylinder, brake lines, pads, rotors, bleeding procedures. Electrical: Starter, alternator/stator, battery, ignition system, lighting (headlights, taillights, brake lights), wiring diagrams, fuses, relays, switches. Bodywork Chassis: Fenders, racks, seat, plastics, frame inspection and repair. Intake Exhaust: Airbox, air filter, intake manifold, exhaust pipe, muffler, emissions components (if applicable). Procedures Included Routine Maintenance: Oil changes, filter replacements, lubrication points, tire pressure checks, chain adjustment. Troubleshooting: Diagnostic flowcharts for common problems, fault code interpretation (if applicable). Engine Overhaul: Complete engine rebuild procedures from top to bottom. Transmission Service: CVT belt inspection/replacement, clutch service, gearcase oil changes. Electrical Diagnostics: Wiring harness testing, component testing, charging system diagnosis. Suspension Adjustment: Preload and damping adjustments, component replacement. Brake System Repair: Pad replacement, rotor service, caliper rebuild, line flushing. Component Installation Removal: Detailed steps for removing and reinstalling major components. Technical Depth Depth: Comprehensive: Covers basic to advanced repairs, diagnostics, and overhauls. Diagrams: Includes exploded views, wiring diagrams, and service illustrations. Specifications: Provides torque values, clearances, tolerances, and fluid capacities. 📊 Manual Specifications File Format Format: PDF (Portable Document Format) Searchable Text: Likely searchable text, enabling quick information retrieval. Print Quality Printability: Designed for printing specific pages as needed. Binding Type Binding: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Type: 4-stroke, liquid-cooled (likely for 400 HO, air-cooled possible for 300 HO). Displacement 300: Approximately 299cc (refer to manual for exact specific) Displacement 400: Approximately 375-400cc (refer to manual for exact specific) Bore X Stroke: Specific to model, detailed in manual. Compression Ratio: Specific to model, detailed in manual. Performance Horsepower Approx 300: Likely in the 20-25 HP range. Horsepower Approx 400: Likely in the 25-30 HP range. Torque: Specific to model, detailed in manual. Fuel System Carburetor Type: Likely Mikuni or Keihin, single barrel. Fuel Type: Unleaded gasoline (87 octane recommended). Lubrication Oil Type: SAE 10W-40, API SG or higher (check manual for precise specification). Cooling Coolant Type: Ethylene glycol based antifreeze mixture (check manual for specific mix ratio and type). 🔧 Transmission Standard Type: Automatic (CVT - Continuously Variable Transmission) with High/Low range and Reverse. Optional Gear Selection: H (High), L (Low), N (Neutral), R (Reverse). Features Drive System: On-Demand AWD (All-Wheel Drive) or 2WD/4WD selectable depending on trim. Final Drive: Shaft drive to rear, shaft drive to front...