2001 Polaris Sportsman 400-500 DUSE and H.O. Service Manual, Page 41Get this manual
MAINTENANCE
THROTTLE OPERATION
Check for smooth throttle opening and closing in all handlebar positionsThrottle lever operation should be smooth and lever must return freely without binding1Place the gear selector in neutral2Set parking brake3Start the engine and let it idle4Turn handlebars from full right to full leftIf idle speed increases at any point in the turning range, inspect throttle cable routing and condition5Replace the throttle cable if worn, kinked, or damagedTo remove the ETC cover: 1Use medium flat blade screwdriver and insert blade into the pocket of the cover starting on the #1 position2Twist screwdriver slightly while lifting on the cover to release snap3Repeat procedure at the other five locations as shownNOTE: Do not attempt to remove cover until all latch points are released3 1