2004 Polaris Freedom, Virage, Genesis and MSX-140 Service Manual., Page 143Get this manual
FUELEXHAUST SYSTEMS Carburetor DisassemblyInspectionContinued
10With check valves, needle valve, and Orings removed, thoroughly inspect the carburetor casting for debris and crackingClean all discharge ports
11Remove the accelerator pump coverNOTE: The cover is under spring tensionSupport cover during removal12Inspect passage sealing Oring and replace if worn or damagedThe flat surface of the Oring faces the pump body, (away from cover)