🏷️ Basic Information Identification Make: Polaris Model: Sportsman 300 / 400 H.O. Vehicle Type: All-Terrain Vehicle (ATV) Model Years Covered: 2010 Codes Vin Code Start: 4X4 Vin Code End: 4X4 👋 Introduction Market Position Segment: Mid-size utility ATV segment. Target Audience: Recreational riders, farmers, hunters, and light-duty trail use. Competitive Analysis Competitors: Yamaha Kodiak, Honda Rancher, Can-Am Outlander (lower displacement models). Key Features Unique Selling Points: Polaris's proprietary PVT automatic transmission, Electronic Fuel Injection (EFI) for consistent performance, and the robust Polaris On-Demand All-Wheel Drive system. Manual Value Proposition: This comprehensive service manual provides professional-level repair and maintenance information, empowering owners and technicians to maintain their ATVs to factory standards, reducing downtime and ensuring longevity. 📋 Manual Details Coverage Areas Primary Coverage: Comprehensive repair, service, and technical information for 2010 Polaris Sportsman 300 and Sportsman 400 H.O. ATV models. Secondary Coverage: Maintenance, troubleshooting, diagnostics, and component-level repair. Page Count Total Pages: 300 Manual Type Type: Original Factory Service Manual Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine: Detailed breakdown of engine components, troubleshooting, overhaul procedures, and specifications for both 300cc and 400cc HO engines. Transmission: Automatic transmission (PVT - Polaris Variable Transmission) service, belt inspection/replacement, roller/sheave maintenance, and troubleshooting. Drivetrain: Front and rear drive systems, including AWD (All-Wheel Drive) engagement, driveshafts, U-joints, differentials, and hubs. Suspension: Front and rear suspension components, including shocks, springs, control arms, bushings, and alignment procedures. Brakes: Hydraulic brake system, including caliper service, master cylinder overhaul, brake line maintenance, bleeding procedures, and rotor/pad replacement. Electrical: Full electrical system diagnosis, including ignition, lighting, charging system (stator, regulator/rectifier), battery, starter, and accessory wiring. Fuel System: Fuel delivery system, including fuel pump, fuel filter, fuel injection (EFI) system diagnostics, injector cleaning, and fuel tank service. Cooling System: Radiator, fan, thermostat, coolant flushing and refilling procedures, and troubleshooting overheating issues. Exhaust System: Muffler, head pipe, heat shields, and exhaust gasket replacement. Steering: Steering column, tie rods, ball joints, and wheel alignment procedures. Bodywork And Frame: Body panel removal/installation, frame inspection, and plastic component repair. Procedures Included Maintenance: Scheduled maintenance tasks, fluid checks and changes, filter replacements, spark plug service, and general inspection procedures. Troubleshooting: Systematic diagnostic flowcharts and troubleshooting guides for common and uncommon issues across all major vehicle systems. Repair: Step-by-step repair procedures for component removal, disassembly, assembly, and reinstallation. Overhaul: Complete engine and transmission overhaul procedures, including necessary specifications and torque values. Diagnostics: Diagnostic procedures for electrical and mechanical systems, including use of specialized tools and interpretation of symptoms. Electrical Diagnostics: Wiring diagrams, voltage drop testing, continuity checks, and component testing procedures. Technical Depth Depth Level: Comprehensive, covering everything from basic pre-ride checks to full engine rebuilds and complex electrical diagnostics. Diagnostic Tools: Information on necessary tools and equipment for effective diagnosis and repair, including specialized Polaris tools where applicable. Specifications: Detailed technical specifications, tolerances, clearances, torque values, and fluid capacities for all components. 📊 Manual Specifications File Format Format: PDF Searchable Text: Yes (inherent to well-formatted PDFs) Printable: Yes Print Quality Quality: High-resolution scans of original factory documentation, ensuring clarity of diagrams and text. Binding Type Binding: Not Applicable (PDF Download) Paper Type Paper Type: Not Applicable (PDF Download) ⚙️ Engine Specifications Primary Engine Engine Type 300: Liquid-cooled, 4-stroke, SOHC, single-cylinder Displacement 300: 271cc Engine Type 400Ho: Liquid-cooled, 4-stroke, OHC, single-cylinder Displacement 400Ho: 375cc Bore X Stroke 300: 68.7mm x 74mm Bore X Stroke 400Ho: 84mm x 68mm Compression Ratio 300: 10.0:1 Compression Ratio 400Ho: 10.2:1 Performance Horsepower 300: Approximately 18 HP (estimated) Horsepower 400Ho: Approximately 26 HP (estimated) Torque 300: Not specified, but adequate for class Torque 400Ho: Not specified, but adequate for class Fuel System Induction: Electronic Fuel Injection (EFI) Fuel Type: Unleaded gasoline, minimum 87 octane Fuel Tank Capacity: 3.0 gallons (11.4 L) 🔧 Transmission Standard Transmission Type: Polaris Variable Transmission (PVT) - Automatic with Engine Braking Drive Modes: High, Low, Neutral, Reverse, Park Optional Optional Transmission: N/A Features Engine Braking: Standard feature providing downhill control Clutch Type: Primary and secondary clutch system Transmission Fluid Type: Polaris Synthetic Gearcase Lubricant (or equivalent SAE 10W-40 API GL-4 transmission oil) Transmission Fluid Capacity: 0.38 quarts (0.36 L) 📐 Dimensions Exterior Length: 83 in. (210.8 cm) Width: 46 in. (116.8 cm) Height: 47.5 in. (120.7 cm) Wheelbase: 50.5 in. (128.3 cm) Ground Clearance: 10.5 in. (26.7 cm) Weights Dry Weight: Approximately 640 lbs (290 kg) Gvw: 1150 lbs (522 kg) Cargo Rack Capacity Front: 100 lbs (45.4 kg) Rack Capacity Rear: 200 lbs (90.7 kg) Towing Capacity: 1050 lbs (476 kg) Wheels Tires Front Tire Size: 25x8-12 Rear Tire Size: 25x10-12 Wheel Type: Steel 🛡️ Safety Features Ratings Atv Safety Standards: Complies with ANSI and ATV Safety Institute standards. Active Features AWD System: Polaris Automatic On-Demand All-Wheel Drive (AWD) for enhanced traction. Engine Braking: Provides engine braking on descents, aiding control. Passive...