Basic Information Identification Make: Polaris Model: Sportsman 400 H.O. Year: 2009 Model Variant: Sportsman 400 H.O. Model Codes: A09LH46AQ, A09LH46AX, A09LH46AZ Generation Atv Platform Generation: Fourth Generation Sportsman (2005-2009) Introduction Market Position Positioning: Mid-range utility ATV for trail riding, light work, and recreational use, appealing to a broad customer base seeking reliable performance and Polaris's established reputation. Competitive Analysis Competitors: Competed with models from brands like Yamaha (Grizzly 350), Can-Am (Outlander 400), Arctic Cat (400 DVX/TRV), and Suzuki (KingQuad 400) in the 300-400cc utility ATV segment. Key Features Features: Independent Rear Suspension (IRS) on 400 H.O. models, Polaris's proprietary Automatic PVT (Polaris Variable Transmission) with engine braking, and a reputation for comfortable and stable handling. Manual Value Proposition Benefit: Provides owners and technicians with the essential knowledge to maintain, diagnose, and repair their 2009 Polaris Sportsman 300 or 400 H.O. ATV, saving money on labor and extending vehicle lifespan. Manual Details Coverage Areas Scope: Complete Official Workshop Service and Repair Manual Page Count Estimated Pages: Extensive (exact count not provided, but described as 'complete official workshop service and repair manual' covering all sections) Manual Type Type: Service Repair Workshop Manual Language Language: English Format Format: PDF Download Manual Coverage Systems Covered Engine: Detailed diagnostics, repair, and overhaul procedures for the engine. Includes component identification, assembly, disassembly, and troubleshooting. Fuel System: Comprehensive coverage of the fuel delivery system, including carburetor (likely for Sportsman 300 and potentially older 400 H.O. models depending on specific sub-variant) or fuel injection system (for H.O. variants), fuel pump, lines, filters, and tank. Body Steering Suspension: Detailed procedures for body panels, steering system components (handlebars, tie rods, steering rack), and suspension system (shocks, control arms, wheel hubs, bearings). Cvt Transmission: In-depth coverage of the CVTech continuously variable transmission (CVT) system, including primary and secondary clutch inspection, service, replacement, belt inspection and replacement, and gearbox operation. Final Drive: Procedures for servicing and repairing the final drive system, including differentials (front and rear), drive shafts, CV joints, and axle bearings. Brakes: Complete brake system service, including hydraulic brake components (master cylinders, calipers, lines, fluid), parking brake, and bleeding procedures. Electrical: Extensive electrical system diagnostics, including battery, charging system (stator, rectifier/regulator), ignition system, lighting, starter motor, and accessory wiring. Wiring Diagrams: Detailed wiring schematics for all electrical systems, crucial for troubleshooting and component identification. Procedures Included Maintenance: Scheduled maintenance, fluid changes, filter replacements, lubrication, and general upkeep procedures. Troubleshooting: Diagnostic flowcharts and troubleshooting guides for common and complex issues across all systems. Repair Rebuild: Step-by-step instructions for component disassembly, inspection, repair, reassembly, and adjustment for all major systems. Restoration: Guidelines and specifications suitable for restoring the ATV to its original condition. Technical Depth Depth: Comprehensive, covering everything from basic maintenance to complex diagnostics and complete engine/transmission rebuilds. Manual Specifications File Format Format: PDF (Portable Document Format) Print Quality Printability: All pages are printable, allowing for physical copies in the workshop. Binding Type Binding: N/A (Digital Download - PDF) Paper Type Paper Type: N/A (Digital Download - PDF) Searchability Text Search: PDF format typically allows for text searching of keywords, enhancing usability. Engine Specifications Primary Engine Sportsman 300 Engine: Likely a 270cc class single-cylinder, liquid-cooled, SOHC, 4-stroke engine. Specific details like bore/stroke and compression ratio would be in the manual. Sportsman 400 Ho Engine: Single-cylinder, liquid-cooled, SOHC, 4-stroke engine, typically around 375cc to 400cc displacement. Known for its 'H.O.' (High Output) tuning. Performance Horsepower Range: Estimated 20-30 HP range, depending on the specific model and engine tune. Precise figures are detailed in the manual. Torque Specifications: Torque figures and power curves for RPM ranges are critical repair data found within the manual. Fuel System Fuel Delivery: May vary by sub-model; likely carburetor for the 300 and possibly early 400 H.O., or electronic fuel injection (EFI) for later 400 H.O. models. Manual will specify exact type and settings. Cooling System Cooling Type: Liquid-cooled, requiring specific coolant mixtures and procedures for service. Manual will detail capacities and bleeding procedures. Transmission Standard Transmission Type: Automatic CVTech Continuously Variable Transmission (PVT) with Engine Braking. Optional Optional Features: Not applicable for this model year; CVT is standard. Features Gear Selection: High, Low, Neutral, Reverse, Park. Fluid Specifications: Manual will specify required transmission fluid type (e.g., Polaris AGL Synthetic Gearcase Lubricant or equivalent) and capacity for gearbox and differential. Dimensions Exterior Overall Length: Approx. 81 inches (206 cm). Specific dimensions for each model variant are detailed in the manual. Overall Width: Approx. 46 inches (117 cm). Specific dimensions for each model variant are detailed in the manual. Overall Height: Approx. 47 inches (119 cm). Specific dimensions for each model variant are detailed in the manual. Weights Dry Weight: Around 650-670 lbs (295-304 kg). Specific dry weights are listed in the manual. Ground Clearance: Approx. 10.5 inches (26.7 cm). Manual will confirm precise figures and any variations. Towing...