Market Segment:
High-performance utility ATV, often favored for its power, versatility, and 2-up seating capability in the X2 variant.
Competitors:
Key competitors include Can-Am Outlander, Yamaha Grizzly, Honda Foreman/Rancher, and Kawasaki Brute Force models.
Powertrain:
Robust 549cc liquid-cooled engine providing ample torque and power for work and recreational riding.
Suspension:
Independent Front Suspension (IFS) and Independent Rear Suspension (IRS) for superior ride quality and terrain handling.
Variable Transmission:
Polaris Variable Transmission (PVT) with engine braking for smooth power delivery and control.
2 Up Seating:
X2 models feature a unique utility bed that converts to a passenger seat, offering versatility for carrying cargo or a second rider.
Electronic Power Steering:
EPS provides reduced steering effort, especially at low speeds and over rough terrain, enhancing rider comfort and control.
Manual Scope:
Comprehensive Workshop Manual
Applicable Models:
Polaris Sportsman 550, Sportsman 550 EPS, Sportsman X2 550, Sportsman X2 550/Touring/EPS
Engine Coverage:
549cc Fuji Single Cylinder, 4-Cycle Liquid-Cooled
Page Count:
Not specified, but typically comprehensive for workshop manuals
Manual Type:
Workshop Manual / Service Manual / Repair Manual
Engine:
General Information, Specifications, Maintenance, Engine Disassembly, Engine Assembly, Fuel System, EFI System, Fuel Injector, Idle Air Control, TPS System, Engine Coolant, Ignition Coil
Cooling System:
Cooling System, Radiator System, Water Pump, Thermostat System
Lubrication:
Lubrication System
Transmission:
Transmission, Shift Linkage, Gear Selector
Electrical:
Electrical System, Ignition System, Digital Wrench System, EFI Diagnostics, Wiring Diagram
Chassis:
Steering/Suspension, Brake System
Maintenance:
Routine maintenance, fluid checks and changes, filter replacements, spark plug service
Troubleshooting:
Systematic troubleshooting guides, diagnostic procedures for engine, electrical, and EFI systems
Repair:
Detailed step-by-step repair procedures for all major vehicle systems, including engine overhaul, transmission service, suspension and brake repairs
Diagnostics:
EFI diagnostics, digital wrench system usage, troubleshooting of fuel injection and ignition faults
Special Tools:
Identification and usage of specialized tools required for specific repair procedures
Depth:
Comprehensive: Covers everything from basic maintenance and adjustments to complete engine rebuilds, transmission overhauls, and detailed electrical system diagnostics.
Engine Type:
Fuji 549cc, SOHC, 4-valve, Single Cylinder, 4-Stroke, Liquid-Cooled
Bore X Stroke:
Not explicitly stated, but typical for this engine size.
Compression Ratio:
Not explicitly stated, but typically around 10.0:1 to 11.5:1 for this engine type.
Horsepower:
Approx. 35-40 HP (Estimates vary by source and specific tuning).
Torque:
Estimated around 35-40 lb-ft.
Fuel Delivery:
Electronic Fuel Injection (EFI) with 44mm throttle body.
Fuel Type:
Unleaded gasoline, 87 octane or higher recommended.
Fuel Tank Capacity:
Approximately 4.0 gallons (15.1 L).
Length:
Approx. 83 in (210.8 cm) for X2 variants.
Width:
Approx. 47.6 in (120.9 cm).
Height:
Approx. 47.4 in (120.4 cm).
Front Rack Capacity:
100 lbs (45 kg).
Rear Rack Capacity X2:
200 lbs (91 kg) in utility mode.
Dry Weight:
Approx. 665 lbs (302 kg) for X2 models.
Towing Capacity:
1500 lbs (680 kg).
Ground Clearance:
11.5 in (29.2 cm).
Atv Safety Standards:
Meets ANSI standards for recreational ATVs.
Braking System:
Hydraulic disc brakes front and rear with enhanced lever feel and stopping power. Includes Active Descent Control (ADC) for downhill control.
Engine Braking:
Provided by the PVT system for controlled descents.
Lighting:
Dual 50W headlights with handguards, LED brake/taillight.
Ergonomics:
Comfortable seating position, intuitive controls, and EPS for reduced fatigue.
Roll Over Protection:
N/A for standard ATVs; operator safety relies on proper riding techniques and protective gear.
Instrument Cluster:
Digital instrument cluster typically includes speedometer, odometer, trip meter, tachometer, engine hour meter, fuel gauge, and indicator lights for AWD, EPS, etc.
Electronic Power Steering:
EPS significantly reduces steering effort, enhancing comfort and control, especially on rough terrain or at low speeds.
Active Descent Control:
Enhances control during downhill descents by automatically engaging engine braking. Covered in the manual's transmission and braking sections.
Diagnostic Tools:
The inclusion of 'Digital Wrench System' and 'EFI Diagnostics' highlights the advanced electronic diagnostic capabilities and tools required for servicing, all detailed in the manual.
Oil Change Interval:
Typically every 100 hours or annually, whichever comes first. Consult manual for exact intervals.
Spark Plug Replacement:
Recommended every 150-200 hours or as needed.
Air Filter Maintenance:
Inspect and clean/replace frequently, especially in dusty conditions. Consult manual for hours/miles.
Transmission Belt Inspection:
Inspect for wear and damage at regular intervals (e.g., 50 hours). Belt replacement typically every 100-200 hours or as condition dictates.
Engine Oil Type:
SAE 0W-40 or 5W-50 synthetic engine oil meeting Polaris specifications. Refer to manual for precise API classification.
Engine Oil Capacity:
Approximately 2.2 US quarts (2.1 L) with filter change. Consult manual.
Coolant Type:
Ethylene Glycol based, permanent type antifreeze coolant, mixed 50/50 with distilled water. Polaris recommends specific coolants.
Brake Fluid Type:
DOT 4 hydraulic brake fluid.
Efi Performance:
Occasional reports of rough idle or hesitation can sometimes be related to sensor calibration (TPS, IAC) or injector cleanliness, which this manual addresses.
Belt Wear:
As with any CVT, belt longevity depends on riding style and conditions. Proper maintenance and alignment are key.
Electronic Component Reliability:
While generally reliable, the EFI system and EPS components can require diagnostics, which this manual expertly covers.
Polaris Inc:
Polaris Inc. has a long history in powersports, starting with snowmobiles and expanding into ATVs, UTVs, and motorcycles, known for innovation and performance.
Sportsman Line:
The Sportsman line is Polaris's flagship utility ATV series, known for its ruggedness, comfort, and versatility. The 550 engine was a popular choice for its balance of power and efficiency.
X2 Variant:
The X2 designation signifies the innovative 2-up seating capability, transforming from a utility bed to a passenger seat, adding significant value for certain users.
Manufacturing Location:
Polaris vehicles are primarily manufactured in the United States.
Atv Of The Year Nominations:
Polaris Sportsman models have frequently been recognized in industry awards for their performance, utility, and innovation, though specific awards for the 2012 550 X2 variant would require historical research.
Consumer Reviews:
Generally well-regarded by consumers for its power, versatility, and comfort, particularly the X2 models for their unique seating/cargo feature.
