Market Position:
The Polaris Sportsman 550 X2 EPS is positioned as a versatile and capable utility ATV, suited for both work and recreational purposes, particularly offering enhanced features for rider and cargo versatility with its X2 designation.
Competitive Analysis:
Competes with other premium utility ATVs from brands like Can-Am (Outlander series), Yamaha (Grizzly series), and Honda (Foreman/Rubicon series), offering a blend of engine power, advanced features like EPS, and the unique dual-seat/cargo bed functionality of the X2 variant.
Key Features:
Electronic Power Steering (EPS) for reduced steering effort, 549cc liquid-cooled engine, True AWD/2WD on-demand, independent suspension, and the X2's innovative dual-seating and convertible cargo bed.
Systems Covered:
General Information, Specifications, Maintenance, Special Tools, Engine Disassembly & Assembly, Fuel System, EFI System, Fuel Injector, Idle Air Control, TPS System, Engine Coolant, Troubleshooting, Ignition Coil, Digital Wrench System, EFI Diagnostics, Cooling System, Radiator System, Water Pump, Thermostat System, Lubrication System, Transmission, Shift Linkage, Gear Selector, Electrical System, Ignition System, Steering/Suspension, Brake System, Wiring Diagram.
Procedures Included:
Step-by-step written instructions with diagrams and pictures for all service, repair, and maintenance procedures. Includes troubleshooting guides and diagnostic procedures.
Specific Procedures Engine:
Engine tune-up, cylinder head removal/installation, piston and connecting rod service, crankshaft removal/installation, valve adjustment, oil pump service.
Specific Procedures Fuel Efi:
Fuel pump diagnosis and replacement, injector cleaning and testing, throttle body service, sensor calibration (TPS), idle air control valve troubleshooting.
Specific Procedures Cooling:
Radiator flush and fill, thermostat replacement, water pump seal inspection and replacement, fan operation check.
Specific Procedures Transmission:
PVT belt inspection and replacement, clutch inspection and service, transmission gear inspection, shift linkage adjustment.
Specific Procedures Electrical:
Battery testing and maintenance, charging system diagnosis (stator, regulator/rectifier), starter motor service, ignition system troubleshooting (coil, CDI), lighting and accessory wiring, complete wiring diagrams.
Specific Procedures Steering Suspension:
EPS system diagnosis and repair, steering post and tie rod end service, wheel bearing replacement, shock absorber inspection, suspension arm bushing replacement.
Specific Procedures Brakes:
Brake pad replacement, caliper service, brake fluid bleeding and flush, master cylinder inspection, brake line inspection and replacement.
Troubleshooting Coverage:
Extensive troubleshooting sections for engine performance, starting issues, electrical faults, EFI system errors, and other common problems with guided diagnostic steps.
Technical Depth:
Factory-level detail suitable for both DIY enthusiasts and professional mechanics. Covers everything from basic maintenance to advanced repairs and diagnostics.
Engine Type:
549 cc, Single Cylinder, 4-Stroke, Liquid-Cooled
Bore X Stroke:
Not explicitly stated, but typical for 550cc class.
Horsepower:
Estimated 38-40 HP (typical for this displacement and era).
Torque:
Estimated 30-35 lb-ft (typical for this displacement and era).
Fuel System Type:
Electronic Fuel Injection (EFI)
Fuel Type:
Unleaded Gasoline
Cooling Type:
Liquid-Cooled
Oil Type:
Refer to manual for specific API SG, SH, SJ classification or SAE 0W-40, 5W-50, 10W-40, 10W-50, 20W-50.
Oil Capacity:
Refer to manual (typically around 1.7-2.0 liters for 550cc Polaris).
Length:
Not specified, but typically around 83-85 inches for this class.
Width:
Not specified, but typically around 46-48 inches for this class.
Height:
Not specified, but typically around 47-50 inches for this class.
Dry Weight:
Not specified, but typically around 700-750 lbs.
Payload Capacity:
Refer to manual (typically around 250 lbs total).
Rack Capacity Front:
Refer to manual (typically around 100 lbs).
Rack Capacity Rear:
Refer to manual (typically around 200 lbs for the X2 seat configuration).
Towing Capacity:
Refer to manual (typically around 1500 lbs).
Engine Oil Change Interval:
Refer to manual (typically every 100 hours or annually).
Gearcase Oil Change Interval:
Refer to manual (typically every 100 hours or annually).
Spark Plug Replacement Interval:
Refer to manual (typically every 300 hours or every 2 years).
Engine Oil Specification:
SAE 0W-40, 5W-50, 10W-40, 10W-50, or 20W-50 (API SG or higher); consult manual for specific temperature recommendations.
Gearcase Oil Specification:
Polaris AGL Synthetic Gearcase Lubricant or equivalent SAE 80W-90 GL-5 Gear Oil.
Coolant Type:
Ethylene Glycol based antifreeze/coolant with corrosion inhibitors (typically a 50/50 mix with distilled water).
Common Issues General:
While this manual covers a broad range, common areas of attention for ATVs of this era can include CV joint boots, suspension bushings, battery health, EFI system sensors, and belt condition for the CVT.
Brand Heritage:
Polaris Industries is a pioneering American manufacturer of powersports vehicles, including ATVs, snowmobiles, and motorcycles, known for innovation and performance.
Model Evolution:
The Sportsman line has been a cornerstone for Polaris for decades, evolving from basic utility ATVs to feature-rich machines. The 550 model represents a mid-to-high displacement offering, and the X2 variant specifically addresses the need for dual-riding or enhanced cargo utility.
Production Years:
The 550 engine platform has been in production for Polaris ATVs for several years prior to and including 2012.
