2008 Polaris Sportsman 500 EFI/X2/Touring/500 H.O. Service Manual, Page 33Get this manual
MAINTENANCE Throttle Inspection
Check for smooth throttle opening and closing in all handlebar positionsThrottle lever operation should be smooth and lever must return freely without binding1234Place the gear selector in ParkSet parking brakeStart the engine and let it idleTurn handlebars from full right to full leftIf idle speed increases at any point in the turning range, inspect throttle cable routing and conditionAdjust cable tension as needed until lock-to-lock turning can be accomplished with no rise in engine rpmReplace the throttle cable if worn, kinked, or damaged3 45 Turn adjuster until specified freeplay is achieved at thumb lever(see illustration)After making adjustments, quickly actuate the thumb lever several times and reverify freeplay
Throttle CableElectronic Throttle Control (ETC Switch) Adjustment
123Slide boot off throttle cable adjuster and jam nutPlace shift selector in neutral and set parking brakeLoosen lock nut on in-line cable adjuster (Ill1)Boot Adjuster Sleeve Lock Nut Boot