Model:
Sportsman 550 EPS Touring X2
Type:
All-Terrain Vehicle (ATV)
Platform Generation:
Polaris Sportsman (9th Generation)
Vin Prefix:
4X4 (Varies by specific model variant, consult manual for details)
Segment:
Premium Utility/Recreational ATV
Target Audience:
Recreational riders, hunters, farmers, and utility users requiring a comfortable and capable 2-up ATV.
Competitors 2010:
Can-Am Outlander, Yamaha Grizzly, Arctic Cat Thundercat, Honda Foreman
Unique Selling Points:
Electronic Power Steering (EPS), 2-Up Seating (Touring), Lock & Ride Cargo System, Independent Rear Suspension (IRS), On-Demand All-Wheel Drive (AWD)
Primary Coverage:
2010 Polaris Sportsman 550 ATVs, 2010 Polaris Sportsman 550 EPS ATVs, 2010 Polaris Sportsman 550 Touring ATVs, 2010 Polaris Sportsman 550 X2 ATVs
Parts Catalog Integration:
Includes information for looking up parts, implying parts diagrams and identification.
Estimated Page Count:
Comprehensive (Specific page count not provided, but typical for full service manuals is 500-1000+ pages)
Manual Type:
Repair Manual / Workshop Manual / Owner's Manual / Parts Catalog
Delivery Format:
PDF Download
Engine Systems:
Engine removal/installation, lubrication, cooling, fuel system, intake, exhaust, engine specifications, diagnostics
Drivetrain Systems:
Transmission, drive chain, sprockets, clutch system, differentials, AWD system
Chassis Systems:
Steering system, suspension (shocks), braking system, frame, bodywork
Electrical Systems:
Wiring diagrams, ignition system, lighting, starting and charging system, EFI system, EPS (Electronic Power Steering) system
Efi System:
Engine Control Module (ECM) diagnostics, sensor testing, injector servicing.
Maintenance Procedures:
Routine maintenance, oil changes, filter replacements, spark plug servicing, brake checks, suspension adjustments
Repair Procedures:
Engine rebuilds, transmission overhaul, suspension component replacement, steering system repair, electrical component troubleshooting and repair, body panel repair
Diagnostic Procedures:
Advanced troubleshooting guides, symptom-based diagnostics, common issues and solutions, diagnostic tool usage (if applicable)
Troubleshooting Guides:
Detailed troubleshooting sections for various systems, including engine performance, electrical faults, and steering issues.
Depth Of Information:
Comprehensive: Covers basic maintenance to complete engine and transmission overhauls, including electrical system diagnostics and EPS system repair.
Engine Type:
4-Stroke DOHC Twin-Cylinder
Displacement:
850cc (Actual displacement for the 550 model is 549cc)
Bore X Stroke:
74 mm x 64 mm (for the 549cc engine)
Horsepower:
Approximately 40 HP (for the 549cc engine, exact figure varies)
Torque:
Significant low-end torque for pulling and climbing (specific Nm not readily available for this model year)
Fuel Delivery:
Electronic Fuel Injection (EFI)
Fuel Type:
Unleaded Gasoline
Cooling Method:
Liquid-Cooled
Engine Family:
ProStar (though the 550 engine predates the full ProStar branding, it shares lineage)
Safety Certification:
ATV Safety Institute (ASI) recommended practices for operation
Electronic Power Steering:
Yes (EPS reduces steering effort, especially at low speeds and on rough terrain)
All Wheel Drive:
On-Demand AWD with automatic engagement
Braking System:
Hydraulic Disc Brakes (Front and Rear), sealed hydraulic system
Lighting:
Dual 50W Halogen Front Headlights, 35W Halogen Tail/Brake Light
Infotainment System:
Basic instrument cluster with speedometer, odometer, trip meter, fuel gauge, and indicator lights. No integrated infotainment system.
Electronic Power Steering:
Standard on EPS models for enhanced steering comfort and control.
Connectivity Features:
No electronic connectivity features (e.g., Bluetooth, GPS integration) in this model year.
Engine Oil Change:
Every 100 hours or annually (whichever comes first) - Consult manual for specific interval and oil type.
Air Filter Inspection:
Every 25 hours or annually, clean as needed. Replace as needed.
Spark Plug Replacement:
Refer to manual for specific interval (typically around 100-200 hours).
Engine Oil Type:
Polaris PS-4 5W-50 Full Synthetic (or equivalent API CI-4/SN rated)
Engine Oil Capacity:
Approx. 2.1 US quarts (2.0 Liters) with filter change - Consult manual for exact capacity.
Gearcase Oil Type:
Polaris Demand Drive Fluid (front differential) and Polaris Synthetic Gear Oil 75W-140 (rear differential) - Consult manual for specific grades.
Common Wear Items:
Drive belts, suspension bushings, wheel bearings, brake pads.
Potential Failures Or Quirks:
EFI system sensor failures, EPS unit issues (though generally reliable), occasional transmission belt slippage under extreme load if not maintained.
Polarissportsman Heritage:
Polaris has a long history in powersports, with the Sportsman line being a cornerstone of their ATV offerings, known for durability and capability.
Sportsman 550 Development:
The 550 platform evolved from previous Polaris engines, incorporating fuel injection and the popular EPS system for improved rider comfort and control.
Manufacturing Location:
Spirit Lake, Iowa, USA