Engine Pings or Knocks | Polaris 550 EPS specification

Engine Pings or Knocks	TROUBLESHOOTING
Engine Pings or Knocks

Possible Cause	Solution

Poor quality or low octane fuel	Replace with recommended fuel
Incorrect ignition timing	See your dealer
Incorrect spark plug gap or heat	Set gap to specs or replace plugs
range
Engine Runs Irregularly, Stalls or Misfires

Possible Cause	Solution

Fouled or defective spark plug(s)	Inspect, clean and/or replace spark
	plug(s)
Worn or defective spark plug wires	See your dealer
Incorrect spark plug gap or heat	Set gap to specs or replace plugs
range
Loose ignition connections	Check all connections and tighten
Water present in fuel	Replace with new fuel
Low battery voltage	Recharge battery to 12.8 VDC
Kinked or plugged fuel tank vent line	Inspect and replace
Incorrect fuel	Replace with recommended fuel
Clogged air filter	Inspect and clean or replace
Reverse speed limiter malfunction	See your dealer
Electronic throttle control malfunction	See your dealer
Other mechanical failure	See your dealer
Possible Lean Fuel Cause	Solution

Low or contaminated fuel	Add or change fuel, clean the fuel
	system
Kinked or plugged fuel tank vent line	Inspect and replace
Low octane fuel	Replace with recommended fuel
Clogged fuel filter	See your dealer
Incorrect fuel	Replace with recommended fuel
Possible Rich Fuel Cause	Solution

Fuel is very high octane	Replace with lower octane fuel
Stopping/starting without adequate	Allow engine to warm up before oper-
warm-up	ating and/or stopping
Incorrect fuel	Replace with recommended fuel
Clogged air filter	Inspect and clean or replace

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Polaris 550 EPS owner manual Engine Pings or Knocks, Engine Runs Irregularly, Stalls or Misfires

Contents

Sportsman X2 550 EPS Page Welcome Page Table of Contents Introduction European Vibration and Noise VIN Vehicle Identification Numbers Safety Training Safety Helmet Safe Riding Gear Gloves BootsEquipment Modifications Eye Protection Safety Warnings Operating Without InstructionAge Restrictions Handling Gasoline Exposure to ExhaustFailure to Inspect Before Operating Carrying More Than One Passenger Using Alcohol or DrugsProtective Apparel Carrying a Passenger Operating at Excessive Speeds Carrying a Passenger Cargo BoxOperating on Pavement Operating on Public Roads Physical Control of the ATV Turning ImproperlyJumps and Stunts Improper Hill Climbing Descending Hills ImproperlyCrossing Hillsides Operating on Steep Hills Stalling While Climbing a Hill Operating on Slippery Terrain Operating in Unfamiliar TerrainOperating Improperly Reverse Improper Tire Maintenance Operating Over ObstaclesSkidding or Sliding Improper Cargo Loading Operating Through Deep Water Poor Visibility Operating on Frozen Bodies Water Unauthorized Use of the ATV Operating a Damaged ATVPhysical Skills Hot Exhaust Systems General Warning Safety Labels and Locations Reverse Override Warning/AWD Caution Age 16 Warning Passenger Must Always Passenger Safety//Discretionary Warning Tire Pressure/Load Warning Rack Warning, Front Clutch Cover WarningHitch Capacity Label Box Warning Engine Stop Switch Features and ControlsSwitches Mode/Reverse Override Switch Main Key Switch 4X4 SwitchHeadlight Switch Throttle Lever Brake Lever Master Cylinder/Brake Fluid Locking the Parking Brake Parking Brake Auxiliary Foot Brake Brake Fluid Level Electronic Power Steering EPS Automatic Transmission Gear SelectorBelt Life Fuel Tank Cap Extreme Use 30 AH Battery ADC 4X4 Mode 4X4 ModeAll Wheel Drive System 2X4 Mode Turf ModeEngaging Active Descent Control ADC System Engaging Active Descent ControlDisengaging Active Descent Control Seat Conversion Passenger Seat Backrest Adjustment Latch Passenger Front Box/Compartment Instrument Cluster Digital/Analog GaugeSpeedometer Lamp Indicates Condition Indicator Lamps Rider Information Center Features and Controls Display Units Standard/Metric Odometer Mode Programmable Service Interval Engine Error Codes Diagnostic Display Code Definitions Sportsman X2 550 EPS Diagnostic Codes EPS Models Only PVT Break-in Clutches/Belt OperationBreak-In Period Engine and Drivetrain Break-in Remarks Pre-Ride Checklist Safe Operation Practices Trail Etiquette Know Your Riding Area/Tread Lightly Cold Weather Operation Starting the Engine Driving Procedures Turning the Vehicle Driving with a Passenger Operation Driving on Slippery Surfaces Driving Uphill Driving on a Sidehill Sidehilling Driving Downhill Turning Around on a Hill K-Turn Operation Driving Through Water Driving Over Obstacles Driving in Reverse Parking on an Incline Do not Travel Faster than the Recommended Speeds Hauling Cargo Never exceed 50 MPH 80 km/h while carrying a passenger Towing Loads Dumping Cargo Winch Guide Winch Safety Precautions Winch Guide Winch Guide Winch Operation YES no Winch Guide Winch Guide Winch Guide Winch Cable Care Shock Loading Winch Guide Winch Maintenance and Service Safety Emission Control Systems Maintenance Periodic Maintenance ChartSevere Use Definition Symbol Description Maintenance Chart Key Miles Fuel system 100 H 12 M Lubrication Guide Procedure Oil Recommendations Engine Oil Oil Level Oil and Filter Change Oil Filter Oil Check Transmission Oil Oil Change ADC Extreme Use Definition Front Gearcase Demand Drive Fluid Fluid Change Fluid Check Fluid Level Active Descent Control ADC Fluid Position the vehicle on a level Rear Gearcase Oil Power Steering Unit Cooling System Recovery Bottle Coolant Radiator Coolant Brakes Hand BrakeAuxiliary Foot Brake Toe Alignment Steering Assembly Side Panel/Footwell Removal Seat Removal Wheel Removal TiresTire Tread Depth Front Wheel Hub Tightening Wheel Installation Wheel Nut Torque SpecificationsWheel Type Nut Type Nut Torque Air Filter Fuse Replacement Lights Headlight Lamp Replacement High Beam Adjustment Headlight Housing Replacement Low Beam Adjustment Taillight/Brakelight Lamp Replacement Lower Headlamp Replacement Spark Plug Inspection Plug Condition Torque SpecificationSpark Plugs Spark Plug Recommendations Wet Fouled Spark Plug Normal Spark Plug Vehicle Immersion Spark Arrester PVT System 127 When To Use Low Range and High Range PVT DryingCondition Range to Use Battery Removal Battery Battery Installation Battery Storage Battery Charging State Voltage Action Charge Time Throttle Cable Freeplay Throttle Body/Idle RPM 135 Handlebars Front and Rear Springs Camber and Caster Transporting the ATV Accessories Cleaning and Storage Washing the VehicleWashing Tips Polishing Tips Polishing the Vehicle Fluid Levels Clean the ExteriorStorage Tips Oil and Filter Inspect and Lubricate Battery StorageFog the Engine Air Filter / Air Box Drive Belt Wear/Burn Troubleshooting Engine Doesnt Turn Over Engine Turns Over, Fails to StartEngine Backfires Engine Runs Irregularly, Stalls or Misfires Engine Pings or Knocks Engine Overheating Engine Stops or Loses Power Part Number Description Polaris Products Sportsman X2 550 EPS Specifications N/R/P Clutching Limited Warranty Warranty Lubricants and Fluids Limitations of Warranties and Remedies 152 HOW to Obtain Warranty Service Exported Products A. EPA Emissions Limited Warranty 156 California Residents Maintenance LOG 159 Index Battery 161 162 163 9924657