2012 Sportsman 400/500 and EFI Tractor Service Manual 9923412, Page 54Get this manual
MAINTENANCE Carburetor Draining
The carburetor float bowl should be drained periodically to remove moisture or sediment from the bowl, or before extended periods of storageNOTE: The bowl drain screw is located on the bottom left side of the float bowl1Turn fuel valve to the OFF position2Place clean container beneath the bowl drain spigot or bowl drain hose3Turn drain screw out two turns and allow fuel in the float bowl and fuel line to drain completely4Inspect the drained fuel for water or sediment5Tighten drain screw6Turn fuel valve to "ON"7Start machine and check for leaksNOTE: All tubes attached to the carburetor must be check for pinching or blockage, as this will effect engine performance