This manual covers the All-Terrain Vehicle (ATV) for the model years 2008, 2009, and 2010. Known for its robust engineering and versatility, the 400 HO is equipped with a 375cc liquid-cooled, SOHC engine, Variable Transmission (PVT), and On-Demand All-Wheel Drive (AWD) capability. This ATV is designed to handle a wide range of terrains, offering reliable performance for both work and recreational activities. Its features include hydraulic disc brakes, a digital instrument cluster, and a substantial towing capacity, making it a capable and dependable choice for various outdoor pursuits. This comprehensive Workshop Service Manual (WSM) provides detailed information essential for the maintenance, troubleshooting, and repair of your 400 HO. It covers all major systems, including the 400cc HO engine, automatic PVT transmission, AWD drivetrain, chassis components, suspension, steering, brakes, and electrical systems. The manual offers step-by-step procedures for routine maintenance, component overhauls, diagnostics, and part replacement, along with critical technical specifications and torque values. This resource is designed to empower owners and professional technicians alike to effectively maintain the vehicle's performance, reliability, and longevity. 🏷️ Basic Information Identification Make: Polaris Model: Sportsman 400 HO Model Years: 2008, 2009, 2010 Vehicle Type: All-Terrain Vehicle (ATV) Codes Manual Product Name: Polaris Sportsman 400 Ho 2008-2010 WSM Service Manual Repair PDF Download 👋 Introduction Market Position Target User: Owners seeking to perform their own maintenance and repairs, independent repair shops Value Proposition: Significant cost savings on repairs and maintenance compared to dealership services Competitive Analysis Manual Advantage: Provides in-depth, professional-grade information often not readily available to the public, covering all aspects of service and repair. Key Features Digital Accessibility: Instant download in a portable PDF format, accessible on various devices. Problem Solving: Empowers users to diagnose and fix issues effectively, extending vehicle lifespan and performance. 📋 Manual Details Coverage Areas Engines Covered: 400cc HO (High Output) engine Transmission Covered: Automatic (PVT - Polaris Variable Transmission) Drivetrain Covered: On-Demand All-Wheel Drive (AWD) and 2WD Chassis Covered: SOHC chassis, suspension, steering, brakes, bodywork Electrical Covered: Ignition, lighting, charging system, starter, accessories Page Count Estimated Page Count: High volume, comprehensive detail (specific page count not provided but indicative of a full WSM) Manual Type Manual Type: Workshop Service Manual (WSM) / Repair Manual Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine Mechanical: Complete engine disassembly, inspection, repair, and reassembly of all internal components (cylinder, piston, rings, crankshaft, connecting rod, valves, camshaft, etc.) Fuel System: Carburetor (Mikuni BSR42) overhaul, cleaning, adjustment, fuel pump, fuel lines, fuel tank inspection and cleaning Cooling System: Radiator, fan, thermostat, water pump, coolant flush and replacement procedures Ignition System: CDI unit, ignition coil, spark plug specifications, timing checks Transmission And Drivetrain: PVT (CVT) belt inspection, replacement, roller maintenance, gearcase oil change, AWD system components and service Suspension And Steering: Front and rear suspension components (shocks, springs, control arms), steering system (tie rods, steering post, knuckle assembly) inspection and repair Brakes: Hydraulic brake system, caliper overhaul, master cylinder service, brake pad replacement, rotor inspection, bleeding procedures Electrical System: Wiring diagrams, battery maintenance, starter motor, charging system (stator, regulator/rectifier), lighting (headlights, taillight, brake light), switchgear, troubleshooting electrical faults Body And Frame: Fender removal, seat removal, rack installation/removal, frame inspection and repair guidelines Procedures Included Routine Maintenance: Oil changes, filter replacements, spark plug service, air filter cleaning/replacement, lubrication points Diagnostic Procedures: Troubleshooting guides for common problems, error code interpretation (if applicable), component testing procedures Repair Procedures: Step-by-step instructions for disassembly, repair, and reassembly of all major vehicle components Technical Specifications: Torque specifications for all fasteners, clearance measurements, alignment procedures, electrical resistance values Part Replacement: Detailed guidance on replacing wear items and faulty components Technical Depth Depth Of Coverage: Comprehensive (WSM level), suitable for professional mechanics and advanced DIYers Diagnostic Capability: Advanced diagnostics and troubleshooting for a wide range of issues Rebuild Instructions: Detailed instructions for complete engine and transmission rebuilds 📊 Manual Specifications File Format File Format: PDF Searchability: Likely text-searchable PDF for efficient information retrieval Print Quality Print Quality: Professional quality, optimized for clear viewing and printing Binding Type Binding Type: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Type: 4-Stroke, Liquid-Cooled, SOHC, 4-Valve Engine Displacement: 375cc (approx.) Bore X Stroke: Specifics available in manual, typically around 84mm x 68mm for this engine family. Horsepower: Approximately 28-30 HP (varies slightly by source and specific tune) Torque: Specifics available in manual, generally around 20-22 ft-lbs Performance Compression Ratio: Typically 10.0:1 or similar Fuel System Carburetor Model: Mikuni BSR42 Fuel Type: Unleaded Gasoline (87 Octane or higher recommended) Fuel Capacity: 4.1 gallons (15.5 liters) with 0.75 gallon reserve 🔧 Transmission Standard Transmission Type: Automatic (PVT - Polaris Variable Transmission) Gear Selection: High, Low, Neutral, Reverse, Park Features Drive Modes: 2WD / AWD (On-Demand) Final Drive: Shaft Drive Fluid Specifications Gearcase Oil Type: SAE 10W-40...