🏷️ Basic Information Identification Make: Polaris Model: Sportsman 300 Model Variant: Sportsman 400 H.O. Year: 2008 Product Type: Service Repair Manual 👋 Introduction Market Position Atv Segment: Entry-level to mid-size utility/recreational ATVs. Target User: Owners seeking to perform their own maintenance and repairs on their Sportsman 300 or 400 H.O. Competitive Analysis Key Competitors: Yamaha Grizzly, Arctic Cat DVX, Can-Am Outlander (in their respective displacement classes). Key Features Original Content: Represents the official factory documentation, ensuring accuracy and completeness. Scope: Covers the critical systems necessary for safe and efficient operation and maintenance. 📋 Manual Details Coverage Areas Coverage Models: Polaris Sportsman 300, Polaris Sportsman 400 H.O. Coverage Years: 2008 Page Count Page Count: 282 Manual Type Manual Type: Original Factory Service Manual Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine Management: Detailed diagnostics, repair, and overhaul procedures for the engine and its components. Fuel System: Carburetor systems, fuel pump, fuel lines, fuel tank maintenance and repair. Ignition System: Ignition coil, spark plugs, stator, CDI unit testing and replacement. Cooling System: Radiator, fan, thermostat, coolant fluid specifications and service. Exhaust System: Muffler, exhaust pipe inspection and replacement. Drivetrain Transmission: Automatic transmission (PVT - Polaris Variable Transmission) operation, maintenance, and repair. Drive Shafts Axles: CV joints, boots, drive shafts inspection and replacement. Suspension Steering: Front and rear suspension components, shocks, A-arms, ball joints, tie rods, steering column, and wheel alignment. Brakes: Hydraulic brake system, calipers, master cylinders, brake lines, pads, rotors, and bleeding procedures. Electrical System: Battery, charging system (alternator/stator), starter motor, lighting, wiring diagrams, fuses, and relays. Chassis Frame: Frame inspection, alignment checks, and related component mounting. Bodywork Plastics: Fender, hood, seat, and other plastic body panel removal, installation, and repair. Procedures Included Routine Maintenance: Oil changes, filter replacements, lubrication, air filter cleaning/replacement, spark plug checks. Troubleshooting Diagnostics: Step-by-step diagnostic trees and common issue identification for electrical, mechanical, and fuel problems. Engine Overhaul: Complete engine disassembly, inspection, repair, and reassembly. Transmission Rebuild: Disassembly, inspection, and repair of the Polaris Variable Transmission (PVT) system. Brake Service: Brake pad replacement, caliper servicing, master cylinder replacement, and brake bleeding. Electrical Component Testing: Testing of stator, ignition coil, starter, battery, and other electrical components using multimeters. Suspension Component Replacement: Replacement of shocks, A-arms, bushings, ball joints, and tie rod ends. Wheel Alignment: Procedures and specifications for front-end wheel alignment. Tire Maintenance: Tire pressure recommendations and inspection. Technical Depth Depth Level: Comprehensive (covers routine maintenance to complete overhaul and diagnostics). Diagnostic Capabilities: Detailed troubleshooting flowcharts and fault code interpretation (if applicable). Specification Detail: Includes torque specifications, clearances, fluid capacities, electrical resistances, and test values. 📊 Manual Specifications File Format File Type: PDF Searchability: Likely text-searchable PDF (typical for modern factory manuals). Print Quality Print Readability: Designed for clear printing of text and diagrams. Binding Type Binding Type: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Type 300: 287cc, Liquid-cooled, 4-stroke, SOHC, Single-cylinder (Engine code may vary, often based on Polaris engines of the era). Engine Type 400 Ho: 375cc, Liquid-cooled, 4-stroke, SOHC, Single-cylinder (Often denoted as 'High Output'). Performance Horsepower 300 Est: ~18-20 HP (Estimated, actual figures vary). Horsepower 400 Ho Est: ~22-25 HP (Estimated, actual figures vary). Torque Specs: Detailed torque specifications for all engine fasteners will be in the manual. Fuel System Fuel Delivery 300: Carburetor (e.g., Mikuni BSR series or similar). Fuel Delivery 400 Ho: Carburetor (e.g., Mikuni BSR series or similar). Fuel Type: Unleaded gasoline, minimum 87 octane. Engine Maintenance Oil Type Recommendation: Polaris recommends specific synthetic or semi-synthetic engine oils, likely SAE 0W-40 or 10W-40, meeting API service classifications (specifics in manual). Oil Capacity Est: ~1.5 - 2.0 Liters (including filter, verify in manual). Spark Plug Recommendation: Specific spark plug model and gap (e.g., NGK or Champion). 🔧 Transmission Standard Transmission Type: Polaris Variable Transmission (PVT) with Engine Braking (CVT - Continuously Variable Transmission). Drive System: Shaft Drive, AWD (All-Wheel Drive) with 2WD/AWD selection. Features Gear Selection: High, Low, Neutral, Reverse. Maintenance Belt Inspection: Critical for PVT performance; procedures for checking belt wear, tension, and alignment. Clutch Service: Primary and secondary clutch inspection, cleaning, and potential adjustment/replacement. 📐 Dimensions Exterior Overall Length Est: ~73 inches (185 cm) (Verify exact measurement). Overall Width Est: ~46 inches (117 cm) (Verify exact measurement). Overall Height Est: ~45 inches (114 cm) (Verify exact measurement). Weights Dry Weight Est: ~600-650 lbs (272-295 kg) (Verify exact measurement). Ground Clearance Est: ~9-10 inches (229-254 mm) (Verify exact measurement). Cargo Rack Capacity Front: Approx. 90 lbs (41 kg). Rack Capacity Rear: Approx. 180 lbs (82 kg). Towing Towing Capacity: Typically 1,500 lbs (680 kg) for this class of ATV (Verify in manual). Wheels Tires Front Tire Size: Commonly 25x8-12 (Verify in manual). Rear Tire Size: Commonly 25x10-12 (Verify in manual). Wheel Type: Steel or Aluminum wheels,...