Basic Information Identification Make: Polaris Model: Sportsman Model Variant: 300 / 400 H.O. Codes Production Years Covered: 2009-2010 Introduction Market Position Category: Mid-size Utility ATV Target User: Recreational riders, trail riding, light utility tasks Competitive Analysis Key Competitors: Honda FourTrax, Yamaha Kodiak, Suzuki KingQuad, Can-Am Outlander Key Features Standout Features Vehicle: Independent Rear Suspension (IRS) on many models, Polaris's robust CVT system, comfortable rider ergonomics. Manual Value Proposition: Provides factory-accurate repair procedures and specifications, essential for maintaining peak performance and longevity. Manual Details Coverage Areas Primary Coverage: Repair and Maintenance Page Count Total Pages: 292 Manual Type Type: Factory Service Manual / Repair Manual Language Language: English Format Format: PDF Download Manual Coverage Systems Covered Engine Mechanical: Full overhaul, top end, bottom end, piston, rings, cylinder, valves, camshaft, crankshaft, timing Fuel System: Fuel injection system, carburetor (if applicable for specific variants), fuel pump, fuel filter, injectors, throttle body Cooling System: Radiator, fan, thermostat, coolant flow, water pump Ignition System: Ignition coils, spark plugs, ECU (Engine Control Unit) parameters, timing Transmission Drivetrain: Automatic transmission (PVT - Polaris Variable Transmission), drive belts, clutches (primary and secondary), differential, driveshafts, CV joints, final drive Electrical System: Battery, charging system (stator, rectifier/regulator), starter motor, lighting system, wiring diagrams, fuses, relays, sensors (crankshaft position, camshaft position, MAP, TPS, etc.) Braking System: Hydraulic disc brakes (front and rear), brake pads, rotors, calipers, brake lines, master cylinder, bleeding procedures Suspension Steering: Front and rear suspension (A-arms, shocks, springs), steering system, tie rods, ball joints, wheel alignment Chassis Frame: Frame inspection, welding, component mounting Bodywork Plastic: Panel removal and installation, fender, racks, seat Procedures Included Scheduled Maintenance: Regular service intervals, fluid changes, filter replacements, lubrication points Troubleshooting: Diagnostic charts, symptom-based troubleshooting, error codes interpretation Repair Rebuild: Step-by-step disassembly and reassembly of all major components Diagnostics: Electrical system diagnostics, engine performance testing, sensor testing Technical Specifications: Torque values, clearances, measurements, tolerances Wiring Diagrams: Complete electrical schematics for all systems Technical Depth Depth: Comprehensive, from basic maintenance to complete engine and transmission rebuilds, including diagnostics and electrical troubleshooting. Manual Specifications File Format Quality: High-resolution, searchable PDF for clarity and ease of use. Print Quality Printability: Designed for printing, allowing users to create a physical copy for workshop use. Binding Type Binding Recommendation: Best printed and bound as a professional service manual for durability. Paper Type Paper Recommendation: Print on durable paper stock suitable for workshop environments. Engine Specifications Primary Engine Engine Type: 4-stroke, SOHC, Liquid-Cooled Displacement 300: 277cc (for the 300 model variant) Displacement 400: 375cc (for the 400 H.O. model variant) Bore X Stroke 300: 74.5 mm x 64.5 mm (typical for this engine family) Bore X Stroke 400: 83 mm x 69.5 mm (typical for this engine family) Compression Ratio: 9.7:1 to 10.0:1 (typical) Performance Horsepower 300: Approximately 21 HP (Varies by specific model and tuning) Horsepower 400: Approximately 30 HP (Varies by specific model and tuning) Torque 400: Approximately 25 lb-ft (Varies by specific model and tuning) Fuel System Fuel Delivery: Electronic Fuel Injection (EFI) for 400 H.O., Carbureted for 300 (check specific VIN for confirmation). Fuel Type: Unleaded gasoline, 87 octane or higher recommended Engine Oil Oil Type Recommendation: SAE 0W-40 or 10W-40 Synthetic or Mineral Oil Capacity: Approximately 2.2 Liters (with filter change) Transmission Standard Type: Polaris Variable Transmission (PVT) Automatic with Engine Braking Optional Gear Selection: High, Low, Neutral, Reverse, Park Features Drive System: On-Demand All-Wheel Drive (AWD) / 2WD Selectable Transmission Fluid Fluid Type: Polaris PS-4 Synthetic or equivalent 4-stroke ATV transmission/engine lubricant (e.g., Lucas Oil 10203, Valvoline 297316) Fluid Capacity: Approximately 2.8 Liters (PVT housing) Dimensions Exterior Length: Approximately 82 inches (208.3 cm) Width: Approximately 46 inches (116.8 cm) Height: Approximately 48 inches (121.9 cm) Weights Dry Weight: Approximately 630 lbs (286 kg) Ground Clearance: Approximately 10.4 inches (26.4 cm) Cargo Front Rack Capacity: 100 lbs (45.4 kg) Rear Rack Capacity: 200 lbs (90.7 kg) Towing Towing Capacity: 1050 lbs (476 kg) Tires Front Tire Size: AT25x8-12 Rear Tire Size: AT25x11-10 Safety Features Ratings Atv Safety Standards: Conforms to ANSI standards where applicable for ATVs. Active Features Braking System Type: Hydraulic Disc Brakes (Front and Rear) Engine Braking: Standard on PVT transmission for controlled descents. Passive Features Lighting: Dual 35W front headlights, 35W taillight/stoplight. Operator Control: Handlebar steering with anti-kickback design, throttle limiter (adjustable). Technology Features Infotainment Display: Digital odometer, trip meter, fuel gauge, clock, AWD/2WD indicator, gear indicator. Driver Assistance Engine Management: ECU controlled fuel injection and ignition timing (EFI models). Connectivity Diagnostic Port: Diagnostic port for reading fault codes (requires appropriate Polaris diagnostic tool or service manual reference). Maintenance Service Intervals Initial Service: First service typically recommended at 10-20 operating hours or 1 month. Engine Oil Change: Every 100 operating hours or 6 months. Air Filter Inspection: Inspect every 20 hours, clean/replace as needed (more frequently in dusty conditions). Spark Plug...