The Polaris Sportsman XP 850 Series, specifically for the 2011 model year, represents a premium, high-performance utility All-Terrain Vehicle (ATV). Powered by the robust 850cc ProStar engine, this ATV delivers substantial power and torque, making it ideal for demanding tasks such as ranch work, hunting expeditions, and challenging trail riding. Key features include a sophisticated independent rear suspension (IRS) for superior comfort and control, and the option of Electronic Power Steering (EPS) to reduce rider fatigue. Its engineering quality is evident in the powerful ProStar platform and the reliable Variable Transmission (PVT) with engine braking, ensuring consistent performance across varied terrain and conditions. This comprehensive 396-page Factory Service Manual provides essential information for maintaining and repairing the Sportsman XP 850, Sportsman XP 850 EPS, Sportsman XP 850 EPS International, Sportsman X2 850, Sportsman Touring 850, and Sportsman Touring 850 International models. It covers all major systems, including the engine, fuel, cooling, transmission, clutch, final drive, body, frame, steering, suspension, brakes, and electrical systems. The manual details routine maintenance, troubleshooting procedures, engine and transmission repair, electrical diagnostics, and component overhauls, offering factory-level technical data, exploded views, torque specifications, and detailed wiring diagrams to assist owners and technicians in keeping their vehicles in optimal condition. 🏷️ Basic Information Identification Make: Polaris Model Family: Sportsman XP 850 Series Year Covered: 2011 Vehicle Type: All-Terrain Vehicle (ATV) Generation Platform: Polaris 850 High Output ProStar Codes Engine Code General: ProStar 850 👋 Introduction Market Position Category: Premium High-Performance Utility ATV Target User: Ranchers, hunters, trail riders, and recreational users demanding robust power and capability. Competitive Analysis Key Competitors: Can-Am Outlander 800R, Yamaha Grizzly 700, Arctic Cat 700/1000 series. Unique Selling Points: 850cc ProStar engine, independent rear suspension (IRS), available Electronic Power Steering (EPS), Polaris Variable Transmission (PVT). Key Features Engine Power: High output 850cc, liquid-cooled, DOHC, 8-valve, 4-stroke engine. Suspension Design: Dual A-arm front suspension with 8.2" travel; Dual A-arm rear suspension with 9.5" travel (IRS). Steering Assistance: Optional Electronic Power Steering (EPS) reduces steering effort significantly. Transmission Type: Automatic PVT (Polaris Variable Transmission) with Engine Braking. 📋 Manual Details Coverage Areas Models Covered: Sportsman XP 850, Sportsman XP 850 EPS, Sportsman XP 850 EPS International, Sportsman X2 850, Sportsman Touring 850, Sportsman Touring 850 International Page Count Total Pages: 396 Manual Type Manual Type: Factory Service Manual / Repair Manual Language Language: English Format Delivery Format: PDF Download 📖 Manual Coverage Systems Covered Engine System: Complete diagnosis, repair, and overhaul procedures for the 850cc ProStar engine. Fuel System: Detailed coverage of Electronic Fuel Injection (EFI) system, including fuel pump, injectors, sensors, and ECU troubleshooting. Cooling System: Radiator, fan, coolant flow, thermostat, and water pump diagnostics and service. Transmission System: Service and repair procedures for the Automatic (PVT) transmission, including belt inspection, clutch assembly, and gearbox. Clutching System: Primary and secondary clutch inspection, maintenance, and adjustment for optimal performance. Final Drive System: Front and rear differential, driveshaft, and axle service, including lubrication and seal replacement. Body Frame: Body panel removal and installation, frame inspection, and mounting hardware. Steering Suspension: Front and rear suspension component service, steering linkage, tie rods, wheel bearings, and shock absorbers. Brake System: Hydraulic brake system diagnosis, caliper service, pad replacement, bleeding procedures, and parking brake. Electrical System: Comprehensive electrical system coverage including starting, charging, lighting, ignition, sensors, ECU, and detailed wiring diagrams. Procedures Included Routine Maintenance: Scheduled maintenance tasks, fluid changes, filter replacements, lubrication points, and pre-ride inspections. Troubleshooting: Diagnostic charts and step-by-step troubleshooting guides for common and complex issues. Engine Repair: Detailed procedures for engine disassembly, component inspection, reassembly, and tuning. Transmission Repair: Procedures for PVT belt replacement, clutch adjustment, and general transmission upkeep. Electrical Diagnostics: Step-by-step diagnosis of electrical faults using wiring diagrams and component testing. Suspension Alignment: Front-end alignment procedures and specifications. Brake Bleeding: Proper hydraulic brake bleeding techniques. Component Overhaul: Detailed instructions for overhauling major components like the engine, transmission, and differentials. Technical Depth Depth Of Coverage: Comprehensive, factory-level technical information suitable for both novice DIYers and professional mechanics. Detail Level: Includes exploded views, torque specifications, diagnostic codes, and detailed wiring diagrams. 📊 Manual Specifications File Format File Type: PDF Searchability: Searchable text within the PDF for quick information retrieval. Print Quality Printability: Printable for individual sections or the entire manual. Binding Type Recommended Binding: 3-ring binder (user supplied) Paper Type Ideal Paper Format: Standard letter/A4 (user printable) ⚙️ Engine Specifications Primary Engine Engine Family: ProStar Displacement: 850cc Engine Type: 4-stroke, DOHC, 4-valve per cylinder Cooling Method: Liquid-cooled Performance Horsepower Estimate: ~70 HP (specific to model variants, manual provides detailed dyno data) Torque Estimate: ~60 lb-ft (specific to model variants, manual provides detailed dyno data) Fuel System Fuel Delivery: Electronic Fuel Injection (EFI) Fuel Type Recommendation: Unleaded gasoline, 87 octane (minimum) 🔧 Transmission Standard Transmission Type: Automatic PVT (Polaris Variable Transmission) Drive Modes: High, Low, Neutral, Reverse,...